Dell EMC Server Administrator Storage Management 9.0.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Copyright Copyright © 2017 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents 1 Overview........................................................................................................................ 12 What Is New In This Release............................................................................................................................................. 12 Before Installing Storage Management..............................................................................................................................
Hot Spare Protection Policy............................................................................................................................................. 29 Storage Component Severity........................................................................................................................................... 30 Storage Properties And Current Activity..........................................................................................................................
Cache Policy...............................................................................................................................................................48 Disk Cache Policy....................................................................................................................................................... 48 Background Initialization On PERC Controllers.................................................................................................................
Viewing Available Reports ................................................................................................................................................79 Available Reports........................................................................................................................................................ 79 Viewing Patrol Read Report........................................................................................................................................
Tape Drive Properties......................................................................................................................................................103 13 RAID Controller Batteries........................................................................................... 104 Battery Properties And Tasks..........................................................................................................................................104 Battery Tasks.............................
Maintaining The Integrity Of Redundant Virtual Disks..................................................................................................... 122 Rebuilding Redundant Information.................................................................................................................................. 123 Managing Virtual Disk Bad Block Management...............................................................................................................
Changing The Policy Of A Virtual Disk............................................................................................................................ 140 Changing The Read, Write, Or Disk Cache Policy Of A Virtual Disk...........................................................................140 To Locate Change Policy In Storage Management ................................................................................................... 140 Split Mirror.........................................
Isolate Hardware Problems........................................................................................................................................ 151 Replacing A Failed Disk.............................................................................................................................................. 151 Using The Physical Disk Online Command On Select Controllers..............................................................................
Connector Tasks Supported By PERC Hardware Controllers.................................................................................... 162 Physical Disk Tasks Supported By PERC Hardware Controllers.................................................................................163 Virtual Disk Tasks Supported By PERC Hardware Controllers................................................................................... 163 Virtual Disk Specifications For PERC Hardware Controllers........................
1 Overview Server Administrator Storage Management provides enhanced features for configuring the locally attached RAID and non-RAID disk storage on a system. Storage Management enables you to perform controller and enclosure functions for all supported RAID and non-RAID controllers and enclosures from a single graphical user interface (GUI) or command-line interface (CLI). The GUI is wizarddriven and includes features for novice and advanced users. The CLI is fully featured and scriptable.
these controllers. Later versions of the firmware and drivers are also supported. For the most recent driver and firmware requirements, contact your service provider. NOTE: To download the latest storport driver, see the Microsoft Knowledge Base article KB943545 at support.microsoft.com. If you install Storage Management without the minimum required firmware and drivers, Storage Management may not be able to display the controllers or perform other functions.
Support For Disk And Volume Management Storage Management does not provide disk and volume management. To implement disk and volume management, you must use the native disk and volume management utilities provided by your operating system.
2 Getting Started Server Administrator Storage Management is designed for system administrators who implement hardware RAID solutions and understand corporate and small business storage environments. Storage Management enables you to configure the storage components attached to your system. These components include RAID and non-RAID controllers and the channels, ports, enclosures, and disks attached to them.
User Privileges Server Administrator provides security through the User, Power User, and Administrator user groups. Each user group is assigned a different level of access to the Server Administrator features. The Administrator privileges are required to access all Storage Management features. Administrator privilege allows you to execute the drop-down menu tasks, launch wizards, and use the omconfig storage command-line interface commands.
Related links Storage Object Common Storage Tasks This section provides information on commonly performed storage tasks: • Create and configure virtual disks (RAID configuration). For more information, see: – Create Virtual Disk Express Wizard — This topic provides information on using the Express Wizard to create a virtual disk. Using the Express Wizard is the quickest method for creating a virtual disk. The Express Wizard is appropriate for novice users.
3 Understanding RAID concepts Storage Management uses the Redundant Array of Independent Disks (RAID) technology to provide Storage Management capability. Understanding Storage Management requires an understanding of RAID concepts, as well as some familiarity with how the RAID controllers and operating system view disk space on your system.
on a physical disk is a stripe element. Striping by itself does not provide data redundancy. Striping in combination with parity does provide data redundancy. • Stripe size — The total disk space consumed by a stripe not including a parity disk. For example, consider a stripe that contains 64KB of disk space and has 16KB of data residing on each disk in the stripe. In this case, the stripe size is 64KB and the stripe element size is 16KB.
• RAID Level 5 (Striping With Distributed Parity) • RAID Level 6 (Striping With Additional Distributed Parity) • RAID Level 50 (Striping Over RAID 5 Sets) • RAID Level 60 (Striping Over RAID 6 Sets) • RAID Level 10 (Striping Over Mirror Sets) • RAID Level 1-Concatenated (Concatenated Mirror) • Comparing RAID Level And Concatenation Performance • No-RAID Related links Starting And Target RAID Levels For Virtual Disk Reconfiguration And Capacity Expansion Concatenation In Storage Management,
RAID level 0 (striping) RAID 0 uses data striping, which is writing data in equal-sized segments across the physical disks. RAID 0 does not provide data redundancy. RAID 0 characteristics: • Groups n disks as one large virtual disk with a capacity of (smallest disk size) *n disks. • Data is stored to the disks alternately. • No redundant data is stored. When a disk fails, the large virtual disk fails with no means of rebuilding the data. • Better read and write performance.
RAID 1 characteristics: • Groups n + n disks as one virtual disk with the capacity of n disks. The controllers currently supported by Storage Management allow the selection of two disks when creating a RAID 1. Because these disks are mirrored, the total storage capacity is equal to one disk. • Data is replicated on both the disks. • When a disk fails, the virtual disk still works. The data is read from the mirror of the failed disk. • Better read performance, but slightly slower write performance.
RAID 6 characteristics: • Groups n disks as one large virtual disk with a capacity of (n-2) disks. • Redundant information (parity) is alternately stored on all disks. • The virtual disk remains functional with up to two disk failures. The data is reconstructed from the surviving disks. • Better read performance, but slower write performance. • Increased redundancy for protection of data. • Two disks per span are required for parity. RAID 6 is more expensive in terms of disk space.
RAID 50 characteristics: • Groups n*s disks as one large virtual disk with a capacity of s*(n-1) disks, where s is the number of spans and n is the number of disks within each span. • Redundant information (parity) is alternately stored on all disks of each RAID 5 span. • Better read performance, but slower write performance. • Requires as much parity information as standard RAID 5. • Data is striped across all spans. RAID 50 is more expensive in terms of disk space.
RAID 60 characteristics: • Groups n*s disks as one large virtual disk with a capacity of s*(n-2) disks, where s is the number of spans and n is the number of disks within each span. • Redundant information (parity) is alternately stored on all disks of each RAID 6 span. • Better read performance, but slower write performance. • Increased redundancy provides greater data protection than a RAID 50. • Requires proportionally as much parity information as RAID 6.
RAID 10 characteristics: • Groups n disks as one large virtual disk with a capacity of (n/2) disks, where n is an even integer. • Mirror images of the data are striped across sets of physical disks. This level provides redundancy through mirroring. • When a disk fails, the virtual disk still works. The data is read from the surviving mirrored disk. • Improved read performance and write performance. • Redundancy for protection of data.
Comparing RAID Level And Concatenation Performance The following table compares the performance characteristics associated with the more common RAID levels. This table provides general guidelines for choosing a RAID level. Evaluate your specific environment requirements before choosing a RAID level. NOTE: The following table does not show all supported RAID levels in Storage Management. For information on all supported RAID levels in Storage Management, see Choosing RAID Levels And Concatenation. Table 1.
RAID Level Data Availability Read Performance Write Performance Rebuild Performance Minimum Disks Required Suggested Uses data intensive uses. RAID 6 Excellent Sequential reads: Fair, unless using Poor good. writeback cache Transactional reads: Very good N + 2 (N = at least two disks) Critical information. Databases and other read intensive transactional uses. RAID 60 Excellent Very Good X x (N + 2) (N = at least 2) Critical information. Medium sized transactional or data intensive uses.
4 Quick Access To Storage Status And Tasks This section describes various methods to determine the status or health of the storage components on your system and how to quickly launch the available controller tasks.
Storage Component Severity Component status is indicated by the severity. A component with a Warning or Critical/Failure status requires immediate attention to avoid data loss, if possible. The status of the component indicates the combined status of the components and its lower-level objects. It may be useful to review the Alert Log for events indicating why a component has a Warning or Critical status. Table 2.
Monitoring Disk Reliability On RAID Controllers Storage Management supports Self Monitoring Analysis and Reporting Technology (SMART) on physical disks that are SMARTenabled. SMART performs predictive failure analysis on each disk and sends alerts if a disk failure is predicted. The RAID controllers check physical disks for failure predictions and, if found, pass this information to Storage Management. Storage Management immediately displays an alert icon on the disk.
5 PCI Express Solid-State Device Support This section provides an overview of the Storage Management device management support for Peripheral Component Interconnect Express (PCIe) Solid-State Drive (SSD) and its associated devices like the backplane and extender card. In Storage Management, PCIe SSD appears under Storage in the tree view. Storage Management reports the PCIe SSD devices and its various properties.
Properties Description — Normal/OK — Warning/Non-critical — Critical/Failure/Error Name Displays the name of the subsystem. Slot ID Displays the slot to which the PCIe SSD subsystem is attached. NOTE: If Not Applicable is displayed, you can identify the Slot ID by selecting the System → Main → Systems Chassis → Slots object in the tree view and clicking the Information tab. The Slot ID property on this tab may display the correct information. State Displays the status of the subsystem.
Properties Description Drive Health Good — The drive is used within the TBW specification. The drive health is good as sufficient spare blocks are available. The drive health status is good if the values for percent lifetime used and write protect progress is less than 100 percent. Approaching Warranty Coverage Expiry — The drive is reaching the specified TBW, indicating that it is close to the end of warranty coverage.
Properties Description Product ID Displays the product ID of the device. Serial No. Displays the serial number of the device. PCIe Negotiated Link Speed Displays the current negotiated transfer speed of the physical device in GT/s. PCIe Maximum Link Speed Displays the capable transfer speed of the physical device in GT/s. PCIe Negotiated Link Width Displays the current negotiated link width of the physical device. PCIe Maximum Link Width Displays the capable link width of the physical device.
• Unconfigured and foreign SED drive even when an Encryption Key is not present in the controller Related Tasks • Performing A Full Initialization On A Micron PCIe SSD Performing A Full Initialization On A Micron PCIe SSD Performing a Full Initialization on a Micron PCIe SSD overwrites all blocks and results in permanent loss of all data on the Micron PCIe SSD. During Full Initialization, the host is unable to access the Micron PCIe SSD.
Performing A Cryptographic Erase On An NVMe PCIe SSD NOTE: The virtual disk with RAID 10 configuration cannot be created for the selected number of physical disks. Please refer OpenManage CLI guide for details. Does my controller support this feature? See Supported Features. NOTE: After you hot plug an NVMe PCIe SSD, the NVMe PCIe SSD may take several seconds to be displayed on Storage Management. CAUTION: Cryptographic Erase permanently erases all data present on the disk.
Table 5. PCIe SSD in Slot Card Properties Properties Description ID Displays the ID assigned to the PCIe SSD in slot card by Storage Management. Status These icons represent the severity or health of the PCIe SSD in slot card. — Normal/OK — Warning/Non-critical — Critical/Failure/Error — Unknown Name Displays the name of the PCIe SSD in slot card as PCIe SSD in Slot , where represents the front chassis slot number. State Displays the status of the PCIe SSD in slot card.
Properties Description Serial No. Displays the serial number of the device. PCIe Negotiated Link Speed Displays the current negotiated transfer speed of the device in GT/s. PCIe Maximum Link Speed Displays the capable transfer speed of the device in GT/s. PCIe Negotiated Link Width Displays the current negotiated link width of the device. PCIe Maximum Link Width Displays the capable link width of the device. Form Factor Displays the form factor of the device.
7. • Path • File Name — In this text box, you can provide a custom file name for the log file. The export log file is saved with a .log file extension and the file extension cannot be overwritten by any other file extension entered by the user. The default file name is NVME__.log. NOTE: You cannot use MS-DOS reserved words and special characters in the custom file name. For more information on MS-DOS reserved words, see https://support.microsoft.
PCIe SSD Subsystem Health Indicates the roll-up health status of physical devices. The individual health status of the physical devices appears at the respective level. Related links Backplanes Backplane Firmware Version Backplanes PCIe SSDs are attached to the PCIe SSD backplane of the system. The number of supported PCIe SSDs depend on the system. NOTE: PCIe SSDs must be used with PCIe SSD backplanes. Do not plug in SAS/SATA devices to a PCIe SSD backplane or vice versa.
6 Storage Information And Global Tasks Use the Storage information and Global Tasks window to view high-level information about the storage components or devices on your system. These windows also allow you to launch global tasks that affect all controllers attached to the system. Related links Storage Properties Global Tasks Storage Controller Properties Storage Properties The Storage tree-view object has the following properties. Table 6.
NOTE: You can also click the Set Remaining Rated Writer Endurance Threshold link available on the Storage Dashboard to access this operation. 4. Click Execute. The Set Threshold for Remaining Rated Write Endurance window is displayed with the following options: 5.
NOTE: The newly entered threshold values are retained even after you upgrade Server Administrator. NOTE: When the Available Spare Threshold drops below the configured threshold, an Alert is logged and based on the alert type selection the SNMP trap is received for the same. For more information on SNMP traps, see the Dell EMC OpenManage SNMP Reference Guide at dell.com/openmanagemanuals. The threshold polling interval is scheduled to repeat every five minutes.
Property Definition enclosure. Depending on the controller type, the connector can be either a SCSI channel or a SAS port. Rebuild Rate The rebuild rate is the percentage of the resources available on the system dedicated to rebuild a failed disk when a rebuild is necessary. For more information on rebuild rate, see Setting The Rebuild Rate. Alarm State Displays whether the alarm on the controller is enabled or disabled.
7 Controllers This chapter provides information about the supported controllers and controller features in Storage Management. Related links RAID Controller Technology: SATA And SAS Which Controllers Do I Have? Non-RAID Controller Description What Is A Controller? Most operating systems do not read and write data directly from the disks, but instead send read and write instructions to a controller.
Controllers may also have differences in their read, write, and cache policies as well as how they handle hot spares. You should be aware of these differences when creating virtual disks and assigning hot spares. The following describes some of the RAID controller features and provides links to a more detailed explanation. For information on the features supported by the controllers, see Supported Features. • Hot spares — On RAID controllers, a hot spare is a backup for a disk that fails.
Write Policy Does my controller support this feature? See Supported Features. The write policies specify if the controller sends a write-request completion signal as soon as the data is in the cache or after it has been written to the disk. • Write Back — The controller sends a write-request completion signal as soon as the data is in the controller cache but has not yet been written to disk.
NOTE: The Disk Cache Policy feature is not supported on solid-state disks (SSDs) and on SAS 12 Gbps Adapter. The Disk Cache Policy feature is supported on Non-RAID SAS/SATA physical disks (HDDs) connected to PERC hardware controllers and on RAID SAS/SATA physical disks connected to Software RAID S130 controller. This feature is not dependent on the controller mode and can function as usual when the controller is running in RAID or HBA mode.
NOTE: Supported features may vary from controller to controller. Non-RAID SCSI Controllers The Broadcom PCIe U320 non-RAID controllers use Small Computer System Interface (SCSI) technology. Non-RAID SAS Controllers The following non-RAID controllers use Serial Attached SCSI (SAS) technology: • SAS 12 Gbps HBA • HBA 330 Mini • HBA 330 Adapter NOTE: Storage Management only enumerates and provides the PCI slot information for Broadcom SAS 9207-8e and SAS 9300-8e controllers.
Property Definition NOTE: Storage Management displays Not Applicable on some controllers for which the firmware version cannot be obtained. Minimum Required Firmware Version Displays the minimum firmware version that is required by Storage Management. This property is displayed only if the controller firmware does not meet the minimum requirement. Driver Version Displays the version of the driver that is installed on the controller.
Table 10. Controller Properties Property Definition ID Displays the ID assigned to the controller by Storage Management. Storage Management numbers the controllers attached to the system starting with zero. This number is the same as the controller ID number reported by the omreport CLI Command. For information on Command Line Interface, see the Server Administrator Command Line Interface User’s Guide. Status These icons represent the severity or health of the storage component.
Property Definition Minimum Required Firmware Version Displays the minimum firmware version that is required by Storage Management. This property is displayed only if the controller firmware does not meet the minimum requirement. Driver Version Displays the version of the driver that is installed on the controller. NOTE: Storage Management displays Not Applicable on some controllers for which the driver version cannot be obtained.
Property Definition Auto Replace Member on Predictive Failure Enables the automatic copying of data from a physical disk to a hot spare in case of predictive failure. Use this property in conjunction with the Allow Revertible Hot Spare and Replace Member property. Redundant path view Indicates whether Storage Management has detected a redundant path configuration.
Property Definition • • 0% — indicates the lowest priority for controllers and has the least impact on the system performance. 100% — indicates the highest priority for controllers and has a greater impact on the system performance. Patrol Read Iterations Displays the number of Patrol Read Iterations. For more information about patrol read, see Setting The Patrol Read Mode. Cluster Mode Indicates whether the controller is part of a cluster configuration.
Controller Tasks The following are the list of available tasks on a controller: • Creating A Virtual Disk • Enabling The Controller Alarm • Disabling The Controller Alarm • Turning Off The Controller Alarm • Testing The Controller Alarm • Setting The Rebuild Rate • Resetting Configuration • Exporting The Controller Log File • Foreign Configuration Operations • Importing Foreign Configurations • Importing Or Recovering Foreign Configurations • Clearing Foreign Configuration • Setting
Select the Quiet Alarm task to turn off the controller alarm. However, the controller alarm remains enabled for future device failure. Testing The Controller Alarm Does my controller support this feature? See Supported Features. Select the Test Alarm task to test whether the controller alarm is functional. The alarm sounds for about 2 seconds. Setting The Rebuild Rate Does my controller support this feature? See Supported Features.
CAUTION: Resetting a configuration permanently destroys all data on all virtual disks attached to the controller. If the system or boot partition resides on these virtual disks, it is destroyed. NOTE: Resetting the controller configuration does not remove a foreign configuration. To remove a foreign configuration, select Clear Foreign Configuration task. NOTE: This task is not supported on PERC hardware controllers running in HBA mode.
To Locate Export Log In Storage Management To locate this task in storage management: 1. Expand the Storage tree object to display the controller objects. 2. Select a controller object. 3. Click Information/Configuration. 4. Select Export Log from the Available Tasks drop-down menu. 5. Click Execute. You can also locate this task from the Change Controller Properties drop-down menu. Foreign Configuration Operations Does my controller support this feature? See Supported Features.
Table 11. Foreign Configuration Properties Property Definition Status These icons represent the severity or health of the storage component. • — Normal/OK • — Warning/Non-critical • — Critical/Failure/Error For more information, see Storage Component Severity. Name Displays the name of the foreign configuration and is available as a link. This link enables you to access the physical disks that constitute the foreign disk. State Displays the current state of the foreign configuration.
Property Definition Dedicated Hot Spare Displays whether the foreign disk is a dedicated hot spare. Based on the properties information, you can decide whether you want to import, recover, or clear the foreign configuration. To Locate Foreign Configuration Operations Task In Storage Management For SAS controllers with firmware version 6.1: 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Select a controller object. 3.
To Locate Import Or Recover Foreign Configuration In Storage Management For SAS controllers with firmware versions 6.1 and later: 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Select a controller object. 3. Click Information/Configuration on the controller Properties page. 4. Select Foreign Configuration Operations from the Controller Tasks drop-down menu. 5. Click Execute. 6.
Table 12. Physical Disk Properties Property Definition Status These icons represent the severity or health of the storage component. • — Normal/OK • — Warning / Non-critical • — Critical/Failure/Error For more information, see Storage Component Severity. Name Displays the name of the physical disk. The name is comprised of the connector number followed by the disk number. State Displays the current state of the physical disk.
Property Definition Certified Indicates that the drive has firmware which has been tested and fully qualified by the service provider. Drives that are not certified by the service provider may work but, are not supported and recommended for use in servers. Media Displays the media type of the physical disk. The possible values are: • • • Used RAID Disk Space HDD — Hard Disk Drive.
Property Definition Part Number Displays the unique Bill Of Materials assignment number for a physical disk. The numbers four through eight represent the service provider part number for that model drive. PCIe Negotiated Link Width Displays the current negotiated link width of the physical device. PCIe Maximum Link Width Displays the capable link width of the physical device. Setting Background Initialization Rate Does my controller support this feature? See Supported Features.
To Change The Check Consistency Rate For A Controller 1. Type a numerical value in the Set New Check Consistency Rate (0-100) field. The value must be within the 0–100 range. 2. Click Apply Changes. To exit and cancel your changes, click Return to Previous Page. To Locate Set Check Consistency Rate In Storage Management 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Select a controller object. 3.
continues to appear in the field even as the redundant path is removed. The redundant path ceases to appear only when it is cleared in the storage management. In a daisy-chain scenario, more than one enclosure can be connected to a controller in a redundant path mode. You can connect up to four MD1400 and MD1420 to a PERC H840 controller and SAS 12 Gbps adapter in a daisy-chain enclosure.
Path Failure message to indicate that the enclosure has lost a communication path to the controller, indicating that the enclosure is no longer in redundant path mode. Related links Path Health Clearing The Connectors Redundant Path View Clearing The Redundant Path View Consider a case where you reboot your system and Storage Management, displays the logical connector with a path failure message. It is possible that you may have intentionally unplugged the second connector.
• • NOTE: For more information on how often the Patrol Read task runs when in Auto mode, see your controller documentation. Manual — Enables you to start and stop the Patrol Read task using Start and Stop Patrol Read. Setting the mode to Manual does not initiate the Patrol Read task. If the system reboots while Patrol Read is running in Manual mode, Patrol Read does not restart. Disabled — Prevents the Patrol Read task from running on the system. To Locate Set Patrol Read Mode In Storage Management 1.
You can change any or all of the following properties using the Change Controller Properties task: • Rebuild Rate • BGI Rate • Check Consistency Rate • Reconstruct Rate • Abort check consistency on error • Revertible Hot Spare • Load Balance • Auto replace member on predictive failure • Redundant path view • Persistent hot spare NOTE: You can also set these properties using the command-line interface. For more information, see the Server Administrator Command-Line Interface User’s Guide.
Related links Properties In Manage Physical Disk Power Option Physical Disk Power On Unconfigured Drives And Hot Spares Managing Physical Disk Power Using The Customized Power Savings Mode Managing Physical Disk Power Using The QoS Option Managing The Time Interval For The QoS Option Properties In Manage Physical Disk Power Option The following table displays the properties in the Manage Physical Disk Power option: Table 15.
Related links Managing The Physical Disk Power Managing Physical Disk Power Using The QoS Option To manage physical disk power through the QoS option: 1. Select the Customized Power Save Mode option. 2. In the Spin Down Configured Drives drop-down menu, select Enabled. 3. The Quality of Service (QoS) option is enabled. Enter the Start Time and Time Interval to spin up. 4. Click Apply.
• The controller does not have any offline or missing virtual disks. If there are offline or missing virtual disks, ensure that you have a backup of these virtual disks. • Cables to any virtual disk are not disconnected. Encryption Key The controller uses the encryption key to lock or unlock access to SED. You can create only one encryption key for each encryptioncapable controller. If you are using LKM, you must create the encryption key by providing the Encryption Key Identifier and the Passphrase.
Changing Or Deleting The Encryption Key You can change an encryption key of a controller if the controller already has a configured encryption key. You can delete an encryption key for encrypted controllers only if there are no encrypted virtual disks. To change the encryption key, type the New Encryption Key Identifier and Passphrase. You are prompted to authenticate the current Passphrase.
Converting To Non-RAID Disks On supported PERC adapters: Does my controller support this feature? See Supported Features. NOTE: This task is not supported on PERC hardware controllers running in HBA mode. 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Select the Controller object. 3. Click Information/Configuration on the controller Properties page. 4. In the Controller Tasks drop-down menu, select Convert to Non-RAID. 5.
The Change Controller Mode window is displayed. The Current Controller Mode section displays the mode of the controller – RAID or HBA. 5. Select RAID or HBA from the Change Controller Mode section, and then click Apply Changes. 6. After you click Apply Changes, if you receive one of the following error messages, click OK, and then click Return to Previous Page. Disable or remove the options listed in the error message and then repeat steps 1 to 5. • 7. 8.
certain level along with the rest of the systems in the domain then enabling this mode reduces the drift the systems usually see during the operation over a period of time. When the server is in “System configuration lock down” mode you will not be allowed to initiate any of the configuration operation from either OMSS GUI or CLI. If this mode is set, you are not allowed to perform most of the operations in OMSS except some of the enumeration or reporting operations.
Controller Tasks Supported When System Configuration Lock Down Mode Is On Table 17.
Physical Disk Tasks Supported When System Configuration Lock Down Mode Is On Table 19.
The patrol read report provides information on all the patrol reads performed on the controller in the chronological order. It provides information such as last run time and result. If a patrol read fails, the reason for the failure is displayed. Related links Setting The Patrol Read Mode To Locate View Patrol Read Report In Storage Management 1. In the Server Administrator window, under the system tree, click Storage. 2. Select View Patrol Read Report from the Select Report drop-down menu. 3.
/opt/dell/srvadmin/etc/srvadmin-storage/hddfwver.csv On systems running ESXi: /etc/cim/dell/srvadmin/srvadmin-storage/hddfwver.csv If the existing firmware(s) for all physical disks is the latest, the following message is displayed: There are no physical disks available that require firmware update.
Property Definition Part Number In the event of a drive failure, you can run the View Physical Disk Firmware Version Report to find out the part number of the failed drive and to check if any of the drives require an update.
8 Support For PERC 9 and PERC 10 Hardware Controllers The PowerEdge RAID Controller (PERC) family of enterprise-class controllers is designed for enhanced performance, increased reliability and fault tolerance, and simplified management — providing a powerful, easy-to-manage way to create a robust infrastructure and help maximize server uptime. The introduction of the PERC 9 and PERC 10 family of hardware controllers also brings about improvements in storage solutions.
NOTE: RAID Level 10 virtual disk creation command from Storage Management CLI does not support optional parameter [spanlength=] on PERC 9 hardware controllers. • The Advanced Wizard does not provide the option to select span length for RAID Level 10 virtual disk creation on PERC 9 hardware controllers. • The span layout for RAID Level 10 virtual disk created from the Express Wizard on PERC 9 hardware controllers uses the span layout as recommended by the firmware of the PERC 9 hardware controller.
Hot Spare Considerations — 4KBSector Hard-Disk Drives The following is the Hot Spare considerations (Dedicated and Global Hot Spare) for 4KB sector hard-disk drives supported on PERC 9 hardware controllers: • You cannot assign 4KB sector hard-disk drives as Dedicated Hot Spare for virtual disks created with 512B sector hard-disk drives and vice versa.
9 Support for Marvell RAID Controllers All Operating Systems compatible to OM 9.0.1 are supported by Marvell RAID Controllers except ESXi family of OSes. The Marvell RAID Controllers supports the following enumeration and monitoring operations: • The physical disks are (M.2 devices) are directly connected to the Controller • Enumeration of Physical Disks (M.2 devices) are supported • Enumeration of Virtual Disks on M.
10 Enclosures And Backplanes Physical disks can be contained in an enclosure or attached to the backplane of a system. An enclosure is attached to the system externally while the backplane and its physical disks are internal. Related links Enclosures Backplanes Backplanes You can view the Backplane object by expanding the controller in the Storage Management tree view. Storage Management displays the status of the backplane and the attached physical disks. Backplane is similar to an enclosure.
NOTE: Storage Management does not allow hot removal of enclosures. Reboot the system to effect this change in Storage Management. Storage Management notifies you of enclosure status changes through alerts that are displayed in the Alert Log.
Property Definition For information on events that cause the fan speed to change, see the hardware documentation. Enclosure Power Supplies The enclosure power supplies are displayed under the Power Supplies object in the tree view. You can select the Power Supplies object to view the status information. Power Supply Properties Table 23. Power Supply Properties Property Definition Status These icons represent the severity or health of the storage component.
To Launch The Set Temperature Probe Wizard To launch the Set Temperature Probe wizard: 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Expand a controller object. 3. Expand the enclosure object. 4. Select the Temperatures object. 5. Click Set Temperature Probe. Temperature Probe Properties And Tasks Does my enclosure support this feature? See Supported Features.
Property Definition Failure Threshold The Minimum and Maximum properties indicate the temperatures currently set for the Failure threshold. Related links Enclosure Temperature Probes Checking The Temperature Of The Enclosure Setting The Temperature Probe Values Enclosure Management Modules (EMMs) The Enclosure Management Modules (EMMs) that are installed in the enclosure are displayed under the EMMs object in the tree view.
Property Definition State Displays the current state of the EMMs. Possible values are: • • • • • Ready — EMM is functioning normally. Degraded — EMM has encountered a failure and is operating in a degraded state. Failed — EMM has encountered a failure and is no longer functioning. Storage Management is unable to communicate with the enclosure using SES commands. The Failed state is displayed when the enclosure does not respond to a status query from Storage Management.
Enclosure And Backplane Properties Table 26. Enclosure and Backplane Properties Property Definition ID Displays the ID of the enclosure or backplane. Status These icons represent the severity or health of the storage component. For more information, see Storage Component Severity.
Property Definition The bus configuration switch when toggled on a 220S or 221S enclosure, the enclosure should be turned off. For more information, see Changing The Mode On 220S And 221S Enclosures. Older 200S enclosures with a version 1.8 kernel that only have one EMM may display Split Bus mode and not Joined Bus mode. Joined Bus or Clustered modes may display when applicable in these circumstances. Firmware Version Displays the version of the enclosure firmware.
• Enclosure temperature has exceeded the warning threshold. • Power supply, fan, or enclosure management module — EMM has failed. • Split bus is not installed. A split bus is indicated by a single triangle symbol on the back of the enclosure. Related links Using Alarms To Detect Failures Disabling The Enclosure Alarm Does my enclosure support this feature? See Supported Features. Select the Disable Alarm task to disable the enclosure alarm.
Related links Enclosure Temperature Probes Temperature Probe Properties And Tasks Using Enclosure Temperature Probes Checking The Temperature Of The Enclosure Does my controller support this feature? See Supported Features. To check the temperature: 1. In the Server Administrator window, under the system tree, click Storage dashboard. 2. Expand the tree view until the Temperatures object is displayed. 3. Select the Temperatures object.
For more information on flexible backplane zoning, see Backplanes. To Locate View Slot Occupancy Report In Storage Management 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Expand a controller object. 3. Select the enclosure object. 4. Click Information/Configuration. 5. Select View Slot Occupancy Report from the Available Tasks drop-down menu. 6. Click Execute.
is an open connector not currently attached to storage. Storage Management displays a number for each connector. These numbers correspond to the connector numbers on the controller hardware. You can use these numbers to identify which open connector displayed in the tree view with the open connector on the controller hardware.
11 Connectors A controller contains one or more connectors (channels or ports) to which you can attach disks. You can externally access a connector by attaching an enclosure (for external disks) to the system or internally access by attaching to the backplane (for internal disks) of a system. You can view the connectors on the controller by expanding the controller object in the tree view.
3. Click Continue to exit. Creating A Channel-Redundant Virtual Disk Using RAID 50 To create a channel-redundant virtual disk using RAID 50: 1. Select one physical disk on each of the three channels. 2. Select an additional disk on each of the three channels. You have now selected the minimum number of disks for a RAID 50. Repeat step 2 until you have selected the desired number of disks. 3. Click Continue to exit.
Property Definition • • • SCSI Rate Wide — Indicates a 16–bit data bus. Unknown — Indicates that the termination type is unknown. Not Terminated — On a SCSI controller, this property indicates that the data bus is not terminated. This property is also displayed when the termination type is Unknown. Displays the SCSI speed for a SCSI device.
Clearing The Connectors Redundant Path View If you do not want the redundant path view, physically disconnect the connector port from the enclosure and reboot the system. After the system reboots, the user interface still displays the logical connector, but in a critical state. To clear the redundant path mode, select Clear Redundant Path view from the Controller Tasks.
12 Tape Drive Tape drives contain several tape backup units (TBUs) on which data can be backed up. Storage Management enumerates the TBUs that are used for data back up. You can view the tape drives associated with a particular controller on the Tape Drives on Controller page. Tape Drive Properties Table 29. Tape Drive Properties Property Definition ID Displays the ID of the tape drive. Name Displays the name of the tape drive. Bus Protocol Displays the bus protocol type of the tape drive.
13 RAID Controller Batteries Some RAID controllers have batteries. If the controller has a battery, Storage Management displays the battery under the controller object in the tree view. If there is a power outage, the controller battery preserves data that is in the volatile cache memory (SRAM) but not yet written to disk. The battery is designed to provide a minimum backup of 24 hours. When a RAID controller is first installed in a server, the battery may need charging.
Property Definition Maximum Learn Delay Displays the maximum number of days and hours that you can delay the battery learn cycle. The controller firmware automatically initiates the battery learn cycle. You cannot stop or pause the learn cycle, but you can delay it. For more information, see Initiating The Battery Delay Learn Cycle and Starting A Learn Cycle. Related links Battery — Available Tasks Battery Tasks To access the battery tasks: 1.
Battery Transparent Learn Cycle Transparent Learn Cycle (TLC) is a periodic operation that calculates the charge that is remaining in the battery to ensure that there is sufficient energy. The operation runs automatically, and causes no impact to the system or controller performance. The controller automatically performs TLC on the battery to calibrate and gauge its charge capacity once every 90 days. The operation can be performed manually, if required.
14 Physical Disks Or Physical Devices Physical disks or physical devices reside within an enclosure or are attached to the controller. On a RAID controller, physical disks or devices are used to create virtual disks. Related links Physical Disk Tasks Guidelines To Replace A Physical Disk Or Physical Device A replacement disk may not be the same model as the physical disks or devices in the storage enclosure.
Related Information • If you are replacing a disk that is part of a virtual disk, see Replacing The Disk. • If you want to include the new disk in a virtual disk, see Virtual Disk Considerations For Controllers • For more information, see RAID Controller Technology: SATA and SAS Replacing A Physical Disk Receiving SMART Alerts Self Monitoring, Analysis and Reporting Technology (SMART) alerts are messages predicting that a disk may fail soon.
Table 31. Physical Disk Properties Property Definition Status These icons represent the severity or health of the storage component. — Normal/OK — Warning/Non-critical — Critical/Failure/Error For more information, see Storage Component Severity. Power Status Displays the power status of the physical drives. The power status is present only for H700 and H800 controllers and is not present in the Physical Disk for Virtual Disk page. Spun Down Indicates that the physical drive is in spun down state.
Property Definition • • • • • Unknown — The physical disk or device has failed or is in an unusable state. At times, the physical disk or device can be returned to a usable state by performing a Format, Initialize, Slow, And Fast Initialize task. If the Format, Initialize, Slow, And Fast Initialize task does not appear on the physical disk or device drop-down menu, then this disk or device cannot be recovered.
Property Definition • • 2110 2111 For information on alert messages, see the Server Administrator Messages Reference Guide. Progress Displays the progress of an operation that is being an operation is that is being performed on the physical disk or device. Encryption Capable Displays whether the physical disk or device is a Self-Encryption Disk (SED). The possible values are Yes and No. Encrypted Displays whether the physical disk or device is encrypted to the controller.
Property Definition Serial No. Displays the serial number of the disk. Part Number Displays the Piece Part Identification (PPID) of the physical drive. T10 Protection Information Capability Indicates whether the physical disk supports data integrity. The possible values are Yes and No. Sector Size Displays the sector size of the physical disk. The possible options are 512B and 4KB. PCIe Negotiated Link Speed Displays the current negotiated transfer speed of the physical device in GT/s.
• Enabling Revertible Hot Spare • Performing Cryptographic Erase • Convert To RAID Capable Disk • Convert To Non-RAID Disk Blinking And Unblinking A Physical Disk Does my controller support this feature? See Supported Features. The Blink task allows you to find a disk within an enclosure by blinking one of the light-emitting diodes (LEDs) on the disk. You can use this task to locate a failed disk. On most controllers, the Blink task automatically cancels after a short duration such as 30–60 seconds.
NOTE: Rebuilding a disk may take several hours. Related links Replacing A Failed Disk That Is Part Of A Redundant Virtual Disk Canceling A Rebuild Does my controller support this feature? See Supported Features. Select the Cancel Rebuild task to cancel a rebuild that is in progress. If you cancel a rebuild, the virtual disk remains in a Degraded state. The failure of an additional physical disk can cause the virtual disk to fail and may result in data loss.
Online Or Offline The Physical Disk To set the Online or Offline Task the physical disk: 1. Review the physical disk that must be made online or offline. There may be data loss when performing this task. Back up your data, if necessary. If you want to blink the physical disk, click Blink. 2. Click Online or Offline when ready or click Return to Previous Page. To Locate Online Or Offline In Storage Management To locate this task in storage management: 1.
If Revertible Hot Spare is enabled and the physical disk is SMART-enabled, the controller firmware automatically starts copying data from the SMART-enabled disk in the virtual disk to the hot spare. NOTE: To use the Revertible Hot Spare task, ensure that you have assigned a hot spare to the virtual disk. NOTE: If the disk is not SMART-enabled or if the Auto Replace on Predictive Failure option is disabled, the failed disk is not replaced automatically.
NOTE: This task is not supported on PERC hardware controllers running in HBA mode. NOTE: This task is not supported on PERC 10 controllers. Convert To Non-RAID Disk This task converts a disk to a Non-RAID disk. After converting a disk to non- RAID, the disk is exposed to the operating system unlike unconfigured good disks and it enables usage of disk in direct pass-through mode. NOTE: This task is not supported on PERC hardware controllers running in HBA mode.
15 Virtual Disks A virtual disk refers to a storage created by a RAID controller from one or more physical disks. Although a virtual disk may be created from several physical disks, it is viewed by the operating system as a single disk. Depending on the RAID level used, the virtual disk may retain redundant data if there is a disk failure or have particular performance attributes. NOTE: Virtual disks can only be created on a RAID controller.
NOTE: The order of the controllers displayed on Storage Management may differ with the order of the controllers displayed in the Human Interface (HII) and PERC Option ROM. The order of the controllers does not cause any limitation. The following considerations apply when creating virtual disks: • Creating virtual disks on controllers — When you create a virtual disk, you specify which physical disks are to be included in the virtual disk. The virtual disk you create spans the specified physical disks.
investigate the capacity of your peripheral devices to support a virtual disk that is larger than 1TB. For more information, see your operating system and device documentation. Number Of Physical Disks Per Virtual Disk There are limitations on the number of physical disks that can be included in the virtual disk. These limitations depend on the controller. When creating a virtual disk, the controllers support some stripes and spans (methods for combining the storage on physical disks).
Creating Virtual Disks Does my controller support this feature? See Supported Features. In order to implement RAID functions, you must create a virtual disk. A virtual disk refers to storage created by a RAID controller from one or more physical disks. Although a virtual disk may be created from several physical disks, it is seen by the operating system as a single disk. Before creating a virtual disk, you should be familiar with the information in Considerations Before Creating Virtual Disks.
Controller Starting RAID Level Target RAID Level Reconfiguration from RAID 0 to RAID 6 requires at least 2 additional disks even when this exceeds the 4-disk minimum required by RAID 6 Monolithic, PERC H840 Adapter PERC S140 Comments RAID 1 RAID 0 With or without adding additional disks RAID 1 RAID 5, RAID 6 Add at least one additional disk. RAID 6 requires a minimum of 4 disks. RAID 5 RAID 0 With or without adding additional disks RAID 5 RAID 5, RAID 6 Add at least one additional disk.
To verify redundant information of a virtual disk: 1. Locate the controller on which the virtual disk resides in the tree view. Expand the controller object until the Virtual Disks object is displayed. 2. Select the Check Consistency task from the virtual disk’s Tasks drop-down list box and click Execute. Rebuilding Redundant Information Does my controller support this feature? See Supported Features.
RAID Level Virtual Disk State Scenario Result RAID 5 Ready One bad block on two physical disks at the same location. The controller cannot regenerate data from the peer disks. This results in a virtual disk bad block. RAID 6 Partially degraded (one failed/ missing physical disk) One bad block on a physical disk. The controller regenerates data from the peer disks and sends a Write to the bad block. The disk then remaps the LBA to another physical location. The problem is resolved.
Related links Virtual Disk Properties Virtual Disk Tasks Virtual Disk — Available Tasks Virtual Disk Properties The virtual disk properties can vary depending on the model of the controller. Table 34. Virtual Disk Properties Property Definition Status These icons represent the severity or health of the storage component. — Normal/OK — Warning/Non-critical — Critical/Failure/Error For more information, see Storage Component Severity. Name Displays the virtual disk name.
Property Definition Hot Spare Policy Violated Displays whether the Hot Spare Protection Policy has been violated. NOTE: This property is displayed only if you set any Hot Spare Protection Policy. For more information, see Setting Hot Spare Protection Policy. Layout Displays the RAID level. Size Displays the total capacity of the virtual disk. The algorithm for calculating the virtual disk size rounds a value of 0.005 or less, down to 0.00 and a value between 0.006 and 0.009, up to 0.01.
Virtual Disk — Available Tasks The following is a list of possible tasks in the virtual disk Available Tasks drop-down box.
The background initialization of a redundant virtual disk prepares the virtual disk for parity information and improves write performance. It is important that the background initialization is allowed to run to completion. You can, however, cancel the background initialization. When you do so, the controller restarts the background initialization later. Related links Background Initialization On PERC Controllers Restoring Dead Segments Does my controller support this feature? See Supported Features.
NOTE: The blink operation is available only for removable disks. Renaming A Virtual Disk Does my controller support this feature? See Supported Features. The Rename task enables you to change name of the virtual disk. Related links Renaming A Virtual Disk Canceling A Rebuild Does my controller support this feature? See Supported Features. Select the Cancel Rebuild task to cancel a rebuild that is in progress. If you cancel a rebuild, the virtual disk remains in a Degraded state.
• Have Self Encryption Drives (SEDs) virtual disks Create Virtual Disk Express Wizard Does my controller support this feature? See Supported Features. The Create Virtual Disk Wizard allows you to select the wizard type and the RAID level. The Create Virtual Disk Express Wizard calculates the appropriate virtual disk configuration based on the available space and controller considerations. To make your own selections for the virtual disk configuration, select the Advanced Wizard option.
Create Virtual Disk Express Wizard (Step 2) The Create Virtual Disk Express Wizard - page displays the summary of attributes of the selected RAID level. The attributes include Bus Protocol, Stripe Element Size, Read Policy, and the selected physical disk. The default values of the virtual disk attributes excluding the RAID level are recommended for the selected RAID level. 1. In the Name field, type a name for the virtual disk.
6. To make sure that only encrypted physical disks are used to create the virtual disk, select Yes from the Create Encrypted Virtual Disk drop-down list. The RAID levels are available for selection based on the number of encrypted physical disks. If you select No, the RAID levels are available based on the total number of physical disks present on the system. 7. Select the required RAID level from the drop-down list.
• 8. Select RAID 60 to implement striping across more than one RAID 6 span. RAID 60 groups n*s disks as one large virtual disk with a capacity of s*(n-2) disks, where s is the number of spans and n is the number of disks within each span. RAID 60 provides increased data protection and better read performance, but slower write performance.' Select the Bus Protocol. The possible options are: • 9. SAS • SATA Select the Media Type.
NOTE: The All Disks and Enclosure options enable you to edit spans after selecting the physical disks that comprise them. You can remove a span and specify a span again with different physical disks before proceeding. • Number of Disks per Span — Enables you to select the number of disks in each span (default = 2). This option is available only on SAS controllers with firmware version 6.1 and later.
NOTE: If you have selected the Create Encrypted Virtual Disk option in Create Virtual Disk Advanced Wizard, then in the Summary of Virtual Disk Attributes, an Encrypted Virtual Disk attribute is displayed with a value Yes. Click Span Edit to edit the spans created in Create Virtual Disk Advanced Wizard. The Span Edit option is available only if the controller is a SAS controller with firmware 6.1 and later and if you selected RAID 10.
Related links Reconfiguring A Virtual Disk What is RAID? Deleting A Virtual Disk Channel Redundancy Reconfiguring Or Migrating Virtual Disks Physical Disk Or Physical Device Properties Physical Disk Or Physical Device Tasks Create Virtual Disk Advanced Wizard Create Virtual Disk Express Wizard To Reconfigure A Virtual Disk: Step 1 of 3 1. Select the physical disks that you want to include in the virtual disk. You can expand the capacity of the virtual disk by adding additional physical disks.
• Select RAID 0 for striping — This selection groups n disks together as one large virtual disk with a total capacity of n disks. Data is stored to the disks alternately so that they are evenly distributed. Data redundancy is not available in this mode. Read and write performance is enhanced. • Select RAID 1 for mirroring disks — This selection groups two disks together as one virtual disk with a capacity of one single disk. The data is replicated on both disks.
The virtual disk reconfigure step 3 page enables you to review your changes before completing the virtual disk reconfiguration. 1. Review your changes. The New Virtual Disk Configuration table displays the changes you have made to the virtual disk. The Previous Virtual Disk Configuration displays the original virtual disk prior to reconfiguration. 2. Click Finish to complete the virtual disk reconfiguration. To exit without changing the original virtual disk, click Exit Wizard.
• Initialize • Slow Initialize • Fast Initialize To exit without formatting or initializing the virtual disk, click Go Back To Virtual Disk Page. To Locate Virtual Disks Task In Storage Management 1. In the Server Administrator window, under the system tree, expand Storage to display the controller objects. 2. Expand a Controller object. 3. Select the Virtual Disks object. 4. Depending on the task you want to initiate, select one of the following from the Available Tasks drop-down menu. 5.
Renaming A Virtual Disk Does my controller support this feature? See Supported Features. Renaming a virtual disk enables you to change the name of the virtual disk. The numbering format for the virtual disk remains unchanged. Depending on the controller you have, there are different considerations regarding the controller BIOS: The virtual disk name can contain only alphanumeric characters as well as spaces, dashes and underscores. The maximum length of the name depends on the controller.
Split Mirror Does my controller support this feature? See Supported Features. Use the Split Mirror task to separate mirrored data originally configured as a RAID 1, RAID 1-concatenated, or RAID 10 virtual disk. Splitting a RAID 1 or RAID 1-concatenated mirror creates two concatenated non-redundant virtual disks. Splitting a RAID 10 mirror creates two RAID 0 (striped) non-redundant virtual disks. Data is not lost during this operation.
Assigning And Unassigning Dedicated Hot Spare Does my controller support this feature? See Supported Features. A dedicated hot spare is an unused backup disk that is assigned to a single virtual disk. When a physical disk in the virtual disk fails, the hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention. For more information on hot spares including size requirements, see Protecting Your Virtual Disk With A Hot Spare.
Replacing A Member Disk: (Step 1 of 2) 1. Select the physical disk in the Connector table that you want to replace. 2. Select the destination disk in the Disks available for replace member operation table. CAUTION: If you choose a hot spare as the destination physical disk, your virtual disk does not have a hot spare, unless you assign one. NOTE: You can select only one source or destination physical disk at a time. 3. Click Apply Changes.
16 Moving Physical And Virtual Disks From One System To Another This section describes how to move physical and virtual disks from one system to another. Related links Migrating SAS Virtual Disks To Another System Required Conditions SAS Controllers Virtual disks can only be migrated to a controller that is using the same technology. For example, virtual disks on a SAS controller must be migrated to a SAS controller.
17 Protecting Your Virtual Disk With A Hot Spare When you create a virtual disk using a RAID controller, it enables the system to continue functioning even during a disk failure. This feature can be enabled by assigning a hot spare to the virtual disk. When a disk fails, the redundant data is rebuilt onto the hot spare without interrupting system operations.
Related links Hot Spare Protection Policy Setting Hot Spare Protection Policy Global Hot Spare Protection Policy Resetting The Hot Spare Protection Policy Clear RAID Layout to reset the dedicated hot spare protection policy. Global Hot Spare Protection Policy Table 36. Global Hot Spare Protection Policy Properties Property Definition Enable Global Hot Spare Enables the Global Hot Spare Protection Policy.
18 CacheCade Using Solid-State Drives CacheCade is used to improve random read performance of the solid-state drive (SSD) based virtual disks. A solid-state drive (SSD) is a data storage device that uses solid-state memory to store persistent data. SSDs significantly increase the I/O performance (IOPS) and/or write speed in Mbps from a storage device. With storage controllers, you can create a CacheCade using SSDs. The CacheCade is then used for better performance of the storage I/O operations.
CacheCade Properties The CacheCade(s) page displays a table of properties for each CacheCade. Table 37. CacheCade Properties Property Definition Status These icons represent the severity or health of the storage component. • — Normal/OK • — Warning/Non-critical • — Critical/Fatal For more information, see Storage Component Severity. Name Displays the name of the CacheCade. The link enables you to access the physical disks that constitute the CacheCade.
The Resize CacheCade(s) page is displayed. 2. From the available CacheCade(s), add or remove additional CacheCade(s) as required. The disks that you select are displayed in the Selected Physical Disks section. NOTE: While selecting and clearing the SSDs that must participate in the CacheCade, retain at least one of the original SSDs. 3. Click Finish. Renaming The CacheCade To rename the CacheCade: 1.
19 Troubleshooting This section contains troubleshooting procedures for common situations as well as for specific problems. Related links Common Troubleshooting Procedures Virtual Disk Troubleshooting Specific Problem Situations And Solutions PCIe SSD Troubleshooting Common Troubleshooting Procedures This section describes commands and procedures that can be used in troubleshooting.
It is also recommended to obtain and apply the latest server system BIOS on a periodic basis to benefit from the most recent improvements. For more information on server system BIOS, see the system documentation. Isolate Hardware Problems If you receive a timeout alert related to a hardware device or if you otherwise suspect that a device attached to the system is experiencing a failure, then to confirm the problem: • Verify that the cables are correctly connected.
Replacing The Disk 1. Delete the virtual disk which is in a failed state. 2. Remove the failed physical disk. 3. Insert a new physical disk. 4. Create a new virtual disk. 5. Restore from backup. Using The Physical Disk Online Command On Select Controllers Does my controller support this feature? See Supported Features.
• Problems Associated With Using The Same Physical Disks For Both Redundant And Non-Redundant Virtual Disks A Rebuild Does Not Work A rebuild does not work in the following situations: • The virtual disk is nonredundant — For example, a RAID 0 virtual disk cannot be rebuilt because RAID 0 does not provide data redundancy. • There is no hot spare assigned to the virtual disk — As long as the virtual disk is redundant, to rebuild it: – Remove the failed physical disk and replace it.
A Virtual Disk Of Minimum Size Is Not Visible To Windows Disk Management If you create a virtual disk using the minimum allowable size in Storage Management, the virtual disk may not be visible to Windows Disk Management even after initialization. This occurs because Windows Disk Management is only able to recognize extremely small virtual disks if they are dynamic. It is advisable to create virtual disks of larger size when using Storage Management.
Physical Disk Is Offline Or Displays An Error Status A physical disk may display an error status if it has been damaged, is offline, or was a member of a virtual disk that has been deleted or initialized. The following actions may resolve the error condition: • If a user has changed the status to Offline, then return the disk to Online status by performing the Online disk task.
Read And Write Operations Experience Problems If the system hangs, times out, or experiences other problems with read and write operations, then there may be a problem with the controller cables or a device. Related links Cables Attached Correctly Isolate Hardware Problems A Task Menu Option Is Not Displayed You may notice that the task menus do not always display the same task options. Some tasks are only valid for certain types of objects or at certain times.
Reconfiguring A Virtual Disk Displays Error In Mozilla Browser When reconfiguring a virtual disk using the Mozilla browser, the following error message may display: Although this page is encrypted, the information you have entered is to be sent over an unencrypted connection and could easily be read by a third party. You can disable this error message by changing the settings in the browser. To disable this error message: 1. Select Edit → Preferences. 2. Click Privacy and Security. 3. Click SSL. 4.
20 Frequently Asked Questions This section provides frequently asked questions that address situations commonly experienced in a storage environment.
How Do I Recover From Removing The Wrong Physical Disk For more information, see Recovering From Removing The Wrong Physical Disk. How Do I Identify The Firmware Version That Is Installed The properties information of the controller displays the firmware version that is installed on the controller. From the Storage tree view object, you can display the firmware version for all controllers attached to the system. You can also view this information in the Information/Configuration page of the controller.
21 Supported Features Different controllers support different features. The tasks displayed by the Storage Management menus and other features vary depending on whether the controller supports the feature. This chapter lists the features supported by the controllers. For more information on Controllers, see your hardware documentation. NOTE: The order of the controllers displayed on Storage Management may differ with the order of the controllers displayed in the Human Interface (HII) and PERC Option ROM.
Controller Tasks Supported On PERC Hardware Controllers Table 38.
Controller Task Name PERC H730P Adapter/Mini Monolithic PERC H740P Adapter/Mini Monolithic PERC H730 Adapter/Mini Monolithic PERC H330 Adapter/Mini Monolithic PERC H840 Adapter Persistent Hot Spare Yes Yes Yes Yes Yes Manage Physical Disk Power for Unconfigured and Hot Spare Drives Yes Yes Yes Yes Yes Manage Physical disk power for configured drives Yes Yes Yes No Yes Auto Configure RAID0 Yes Yes Yes No Yes Non RAID HDD Disk Cache Policy Yes Yes Yes Yes Yes Patrol Read Re
Physical Disk Tasks Supported By PERC Hardware Controllers Table 41.
Virtual Disk Task Name PERC H730P Adapter/ Mini Monolithic PERC H740P Adapter/ Mini Monolithic PERC H730 Adapter/ Mini Monolithic PERC H330 Adapter/ Mini Monolithic PERC H840 Adapter Create Virtual Disk Advanced Wizard Yes Yes Yes Yes Yes Create Virtual Disk Express Wizard Yes Yes Yes Yes Yes Rename Yes Yes Yes Yes Yes Blink/Unblink Yes Yes Yes Yes Yes Reconfigure Yes Yes Yes Yes Yes Change Policy Yes Yes Yes Yes Yes Split Mirror No No No No No Unmirror No N
Virtual Disk Specification PERC H730P Adapter/Mini Monolithic PERC H740P Adapter/Mini Monolithic PERC H730 Adapter/Mini Monolithic PERC H330 Adapter/ Mini Monolithic PERC H840 Adapter Maximum Virtual Disk Size None None None None None Maximum Number 8 of Spans per Virtual Disk 8 8 8 8 Maximum Number of Physical Disks per Span 32 32 32 8 32 Minimum Stripe Size 64 K 64 K 64 K 64 K 64 K Maximum Stripe Size 1MB 1MB 1MB 64 K 1MB Maximum Number of Virtual Disks per Disk Group 1
Virtual Disk Specification PERC H730P Adapter/Mini Monolithic PERC H740P Adapter/Mini Monolithic PERC H730 Adapter/Mini Monolithic PERC H330 Adapter/ Mini Monolithic PERC H840 Adapter Minimum Number of Physical Disks in a RAID 1 2 2 2 2 2 Minimum Number of Physical Disks in a RAID 5 3 3 3 3 3 Minimum Number of Physical Disks in a RAID 10 4 4 4 4 4 Minimum Number of Physical Disks in a RAID 50 6 6 6 6 6 Maximum Number of Physical Disks in a RAID 6 32 32 32 NA 32 Maximum Nu
Read, Write, Cache And Disk Cache Policy Supported By PERC Hardware Controllers Table 45.
• Physical Disk Tasks • Virtual Disk Specifications • Supported RAID Levels Controller Tasks Supported On the PERC S140 Controller Table 47. Controller Tasks Supported On the PERC S140 Controller Controller Task Name PERC S140 Create Virtual Disk Yes Physical Disk Tasks Supported By The PERC S140 Controller Table 48.
Virtual Disk Specification PERC S140 Maximum Stripe Size 64 K Maximum Number of Virtual Disks per Physical Disk 8 Maximum Number of Physical Disks that Can Be Concatenated NA Maximum Number of Physical Disks in a RAID 0 8 Maximum Physical Disks in a RAID 1 2 Maximum Number of Physical Disks in a RAID 5 8 Maximum Number of Physical Disks in a RAID 10 4 Minimum Number of Physical Disks that Can Be Concatenated NA Minimum Number of Physical Disks in a RAID 0 2 Minimum Number of Physical Dis
• Enclosure Support For enclosure supported tasks, see Enclosure And Backplane Features. Controller Tasks Supported On The Non-RAID Controllers Table 51.
Physical Disk Tasks Supported On The Non-RAID Controllers Table 54.
Virtual Disk Task Name Non-RAID SCSI Non-RAID SAS Resume Check Consistency No No Cancel Background Initialization (BGI) No No Format Virtual Disk No No Cancel Format Virtual Disk No No Restore Dead Disk Segments No No Initialize Virtual Disk No No Fast Initialize Virtual Disk No No Slow Initialize Virtual Disk No No Cancel Initialize Virtual Disk No No Enclosure Support On The Non-RAID Controllers Table 56.
Maximum Supported Configuration For SAS Controllers Table 58.
22 Determining The Health Status For Storage Components The chapter describes how the status of lower-level storage components is “rolled up" into the combined status displayed for the controller or other higher-level component. The examples provided by these tables do not cover all scenarios, but they do indicate how status is rolled up when a particular component is in a healthy, degraded, or failed state.
Health Status Rollup: Physical Disks In A Virtual Disk Are Unsupported, Partially, Or Permanently Degraded Table 61. Health Status Rollup: Physical Disks in a Virtual Disk are Unsupported, Partially, or Permanently Degraded (Enclosures Not Included) Storage Subsystem Controller Battery Connector Physical Disk(s) Firmware/ Driver Virtual Disk(s) Component Status Health Rollup Health Status Rollup: All Physical Disks In A Virtual Disk Are In Foreign State Table 62.
Storage Subsystem Controller Battery Connector Physical Disk(s) Firmware/ Driver Virtual Disk(s) Physical Disk(s) Firmware/ Driver Virtual Disk(s) Firmware/ Driver Virtual Disk(s) Health Status Rollup: Virtual Disk Is Failed Table 65. Health Status Rollup: Virtual Disk is Failed (Enclosures Not Included) Storage Subsystem Controller Battery Connector Component Status Health Rollup Health Status Rollup: Unsupported Firmware Version Table 66.
Health Status Rollup: One Enclosure EMM Is Failed Table 69. Health Status Rollup: One Enclosure EMM is Failed Storage Subsystem Controller Connector Enclosure Enclosure EMM Virtual Disks Physical Disks Component Status Health Rollup N/A Health Status Rollup: One Enclosure Temperature Probe Is Failed Table 70.
Storage Subsystem Controller Connector Enclosure Health Rollup Enclosure Physical Disk(s) Virtual Disks N/A Physical Disks N/A Health Status Rollup: Physical Disk Is Rebuilding Table 73.
