Dell_PERC5_UG.book Page 1 Tuesday, February 13, 2007 6:02 PM Dell™ PowerEdge™ Expandable RAID Controller 5/i and 5/E User’s Guide Model UCP-50 and UCP-51 w w w. d e l l . c o m | s u p p o r t . d e l l .
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Dell_PERC5_UG.book Page 1 Tuesday, February 13, 2007 6:02 PM Dell™ PowerEdge™ Expandable RAID Controller 5/i and 5/E User’s Guide w w w. d e l l . c o m | s u p p o r t . d e l l .
Dell_PERC5_UG.book Page 2 Tuesday, February 13, 2007 6:02 PM Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your system. NOTICE: A NOTICE warns against either potential damage to hardware or of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. NOTE: See the Product Information Guide that came with your system for complete information about U.S.
Dell_PERC5_UG.book Page 3 Tuesday, February 13, 2007 6:02 PM Contents CAUTION: Safety Instructions . SAFETY: General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 . . . . . . . . . . . . . . . . . . . Protecting Against Electrostatic Discharge . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Overview Scope of the User’s Guide . . . . . . . . . . .
Dell_PERC5_UG.book Page 4 Tuesday, February 13, 2007 6:02 PM Battery Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 . . . . . . . . . . . . . . . . . . . . . . . . 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 RAID Configuration Information . Fault Tolerance Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dell_PERC5_UG.book Page 5 Tuesday, February 13, 2007 6:02 PM 4 Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Creating a Driver Diskette . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the Driver During a Microsoft Operating System Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing a Windows Server 2003, Windows Vista, Windows 2000, or XP Driver for a New RAID Controller . . . . . . . . . . . . . . . . 40 40 . .
Dell_PERC5_UG.book Page 6 Tuesday, February 13, 2007 6:02 PM BIOS Configuration Utility Menu Options . . . . . . . . . . . . . . . . . . . . Setting Up Virtual Disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 61 . . . . . . . 62 . . . . . . . . . .
Dell_PERC5_UG.book Page 7 Tuesday, February 13, 2007 6:02 PM PERC 5 Post Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . Red Hat Enterprise Linux Operating System Errors LED Behavior Patterns . . . . . . . . . . . . . . . . 78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Audible Alarm Warnings . 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix: Regulatory Notices. Regulatory Notices . 79 . . . . . . . . . . . . . . . . . . . . 81 . . . .
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Dell_PERC5_UG.book Page 9 Tuesday, February 13, 2007 6:02 PM CAUTION: Safety Instructions Use the following safety guidelines to help ensure your own personal safety and to help protect your system and working environment from potential damage. CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. See "SAFETY: Battery Disposal" on page 10.
Dell_PERC5_UG.book Page 10 Tuesday, February 13, 2007 6:02 PM In addition, take note of these safety guidelines when appropriate: • When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before disconnecting the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins.
Dell_PERC5_UG.book Page 11 Tuesday, February 13, 2007 6:02 PM Overview The Dell™ PowerEdge™ Expandable RAID Controller (PERC) 5 family of controllers offers redundant array of independent disks (RAID) control capabilities. The PERC 5 Serial Attached Small Computer System Interface (SAS) RAID controllers support SAS devices and Dell-qualified SATA devices. The controllers provide reliability, high performance, and fault-tolerant disk subsystem management.
Dell_PERC5_UG.book Page 12 Tuesday, February 13, 2007 6:02 PM PCI Architecture PERC 5 controllers support a PCI-E x8 host interface. PCI-E is a high-performance I/O bus architecture designed to increase data transfers without slowing down the Central Processing Unit (CPU). PCI-E goes beyond the PCI specification and is intended as a unifying I/O architecture for various systems such as, desktops, workstations, mobiles, server, communications, and embedded devices.
Dell_PERC5_UG.book Page 13 Tuesday, February 13, 2007 6:02 PM RAID 1 uses disk mirroring so that data written to one physical disk is simultaneously written to another physical disk. This is good for small databases or other applications that require small capacity, but complete data redundancy. RAID 5 uses disk striping and parity data across all physical disks (distributed parity) to provide high data throughput and data redundancy, especially for small random access.
Dell_PERC5_UG.book Page 14 Tuesday, February 13, 2007 6:02 PM Disk mirroring provides 100 percent redundancy, but is expensive because each physical disk in the system must be duplicated. Figure 1-2 shows an example of disk mirroring. NOTE: Mirrored physical disks improve read performance by read load balance. Figure 1-2.
Dell_PERC5_UG.book Page 15 Tuesday, February 13, 2007 6:02 PM PERC 5 Features This section describes the features of the The Dell™ PowerEdge™ Expandable RAID Controller (PERC) 5 family of controllers, such as the configuration options, disk array performance, hardware specifications, redundant array of independent disks (RAID) management utilities, and operating system software drivers. PERC 5 Controller Features This section describes the hardware configuration features for the PERC 5 controllers.
Dell_PERC5_UG.book Page 16 Tuesday, February 13, 2007 6:02 PM Table 2-1.
Dell_PERC5_UG.book Page 17 Tuesday, February 13, 2007 6:02 PM SMART Technology The Self-Monitoring Analysis and Reporting Technology (SMART) feature monitors the internal performance of all motors, heads, and physical disk electronics to detect predictable physical disk failures. This feature helps monitor physical disk performance and reliability, and protects the data on the physical disk. When problems are detected on a physical disk, you can replace or repair the physical disk without losing any data.
Dell_PERC5_UG.book Page 18 Tuesday, February 13, 2007 6:02 PM Disk Roaming The PERC 5 controllers support moving physical disks from one cable connection or backplane slot to another on the same controller. The controllers automatically recognize the relocated physical disks and logically place them in the proper virtual disks that are part of the disk group. You can perform disk roaming only when the system is shut down. Perform the following steps to use disk roaming.
Dell_PERC5_UG.book Page 19 Tuesday, February 13, 2007 6:02 PM Battery Management The Transportable Battery Backup Unit (TBBU) is a cache memory module with an integrated battery pack that enables you to transport the cache module with the battery into a new controller. The TBBU protects the integrity of the cached data on the PERC 5/E Adapter by providing backup power during a power outage.
Dell_PERC5_UG.book Page 20 Tuesday, February 13, 2007 6:02 PM Conditions Under Which Write-Back is Employed Write-back caching is used under all conditions in which the battery is present and in good condition. Conditions Under Which Write-Through is Employed Write-through caching is used under all conditions in which the battery is missing or in a low-charge state. Low-charge state is when the battery is not capable of maintaining data for at least 24 hours in the case of a power loss.
Dell_PERC5_UG.book Page 21 Tuesday, February 13, 2007 6:02 PM RAID Configuration Information Table 2-2 lists the configuration features for the PERC 5 controllers. Table 2-2. Features for RAID Configuration Specification PERC 5/E Adapter PERC 5/i Adapter and 5/i Integrated Number of virtual disks supported Up to 64 virtual disks per controller Up to 64 virtual disks per controller NOTE: The number of physical disks on a controller is limited by the backplane on which the card is attached.
Dell_PERC5_UG.book Page 22 Tuesday, February 13, 2007 6:02 PM Physical Disk Hot Swapping Hot swapping is the manual substitution of a replacement unit in a disk subsystem for a defective one, where the substitution can be performed while the subsystem is running (performing its normal functions). NOTE: The backplane or enclosure must support hot swapping in order for the PERC 5 controllers to support hot swapping.
Dell_PERC5_UG.book Page 23 Tuesday, February 13, 2007 6:02 PM Configuration You can use the storage management application to select the Patrol Read options. Use Patrol Read options to set automatic or manual operation, or disable Patrol Read. The following sections describe Patrol Read functions and operations available in the Storage Management application. NOTE: See the storage management application’s documentation for more information about the Patrol Read configuration features available.
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Dell_PERC5_UG.book Page 25 Tuesday, February 13, 2007 6:02 PM Hardware Installation and Configuration This chapter describes how to install the Dell™ PowerEdge™ Expandable RAID Controller (PERC) 5 cards. Installing the PERC 5/E Adapter CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Dell_PERC5_UG.book Page 26 Tuesday, February 13, 2007 6:02 PM Figure 3-1. Installing a PERC 5/E Adapter bracket screw filler bracket PERC 5/E Adapter PCI-E slot 7 Tighten the bracket screw, if any, or use the system’s retention clips to secure the controller to the system’s chassis. 8 Replace the cover of the system. See your system’s Hardware Owner’s Manual for more information on closing the system. 9 Connect the cable from the external enclosure to the controller. See Figure 3-2. Figure 3-2.
Dell_PERC5_UG.book Page 27 Tuesday, February 13, 2007 6:02 PM Installing the Transportable Battery Backup Unit (TBBU) for PERC 5/E This section describes the installation of the transportable battery backup unit (TBBU) on the PERC 5/E. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Dell_PERC5_UG.book Page 28 Tuesday, February 13, 2007 6:02 PM Figure 3-3. Installing a TBBU battery memory module connector on the memory module battery pack harness connector on the battery 4 Place the PERC 5/E on a flat, clean, static–free surface. 5 Mount the memory module in the controller memory socket like a standard DIMM. See "Installing the DIMM on a PERC 5/E Adapter" on page 28 for more information.
Dell_PERC5_UG.book Page 29 Tuesday, February 13, 2007 6:02 PM 2 Align the memory module so that the keyed edge of the memory module is placed exactly on top of the physical divider on the memory socket of the controller to avoid damage to the DIMM. 3 Insert the memory module on the memory socket of the controller and apply a smooth, downward pressure on both ends or on the middle of the memory module until the retention clips fall into the allotted slots on either side of the memory module. See Figure 3-4.
Dell_PERC5_UG.book Page 30 Tuesday, February 13, 2007 6:02 PM Transferring a TBBU Between Controllers The TBBU provides uninterrupted power supply to the memory module for up to 72 hours if power supply is unexpectedly interrupted while cached data is still present. If the controller fails as a result of a power failure, you can move the TBBU to a new controller and recover the data. The controller that replaces the failed controller must be devoid of any prior configuration.
Dell_PERC5_UG.book Page 31 Tuesday, February 13, 2007 6:02 PM Figure 3-5. Removing the PERC 5/E Adapter bracket screw battery memory module PERC 5/E Adapter NOTE: For more information on removing peripherals installed in the system’s PCI-E slots, see the Hardware Owner’s Manual that shipped with the system. Removing the DIMM and Battery from a PERC 5/E Adapter NOTE: The TBBU on the PERC 5/E Adapter consists of a DIMM and battery backup unit.
Dell_PERC5_UG.book Page 32 Tuesday, February 13, 2007 6:02 PM Figure 3-6. PERC 5/E Adapter Dirty Cache LED Location battery memory module dirty cache LED PERC 5/E Adapter CAUTION: Running a system without the system cover installed may cause damage due to improper cooling. 3 Remove the TBBU assembly from the adapter by pressing down on the tabs at each edge of the DIMM connector and lifting the TBBU off the adapter. 4 Disconnect the battery cable from the DIMM.
Dell_PERC5_UG.book Page 33 Tuesday, February 13, 2007 6:02 PM Figure 3-7. Removing the TBBU memory module battery Installing the PERC 5/i Adapter CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Dell_PERC5_UG.book Page 34 Tuesday, February 13, 2007 6:02 PM 5 Align the PERC 5/i Adapter to the PCI-E slot you have selected. 6 Insert the adapter gently but firmly until the board is firmly seated in the PCI-E slot. See Figure 3-8. CAUTION: Do not apply pressure to the memory module while inserting the controller into the PCI-E slot. Applying pressure could break the memory module or damage the DIMM connector. CAUTION: Electrostatic discharge can damage sensitive components.
Dell_PERC5_UG.book Page 35 Tuesday, February 13, 2007 6:02 PM Figure 3-9. Connecting Cables to the Controller cable connector PERC 5/i Adapter 9 Replace the cover of the system. See your system’s Hardware Owner’s Manual for more information on closing the system. 10 Reconnect the power cable(s) and network cables, and then turn on the system. Removing the PERC 5/i Adapter NOTE: A PERC 5/i Adapter installed on a Dell Precision workstation or PowerEdge SC server does not have a BBU.
Dell_PERC5_UG.book Page 36 Tuesday, February 13, 2007 6:02 PM 3 Determine whether the dirty cache LED on the controller is illuminated. • If the LED is illuminated, replace the system cover, reconnect the system to power, turn on the system, and repeat step 1 and step 2. See Figure 3-10. NOTE: The location of the PERC 5/i varies from system to system. See the Hardware Owner’s Manual included with the system for specific information on where the PERC 5/i is located.
Dell_PERC5_UG.book Page 37 Tuesday, February 13, 2007 6:02 PM Figure 3-11. Removing the PERC 5/i Adapter bracket screw memory module PERC 5/i Adapter NOTE: See the Hardware Owner's Manual for information on removing the PERC 5/i from the system. Removing the DIMM from a PERC 5/i Card This section describes how to remove the memory module on a PERC 5/i Adapter or PERC 5/i that is currently installed in a system.
Dell_PERC5_UG.book Page 38 Tuesday, February 13, 2007 6:02 PM Disconnecting the BBU from a PERC 5/i Adapter or a PERC 5/i NOTE: A PERC 5/i Adapter installed in a Dell Precision workstation or a PowerEdge SC server does not have a BBU. This section describes how to disconnect the BBU on a PERC 5/i Adapter or a PERC 5/i while the adapter or controller is installed in a system. 1 Perform a controlled shutdown on the system in which the PERC 5/i is installed.
Dell_PERC5_UG.book Page 39 Tuesday, February 13, 2007 6:02 PM Driver Installation The Dell™ PowerEdge™ Expandable RAID Controller (PERC) 5 family requires software drivers to operate with the Microsoft® Windows®, Red Hat® Enterprise Linux®, and SUSE® Linux operating systems. This chapter contains the procedures for installing the drivers for the following operating systems.
Dell_PERC5_UG.book Page 40 Tuesday, February 13, 2007 6:02 PM Installing the Driver During a Microsoft Operating System Installation Perform the following steps to install the driver during operating system installation. 1 Boot the system using the Microsoft Windows 2000/Windows XP/Microsoft Windows Server 2003 CD. 2 When the message Press F6 if you need to install a third party SCSI or RAID driver appears, press the key immediately.
Dell_PERC5_UG.book Page 41 Tuesday, February 13, 2007 6:02 PM 9 The wizard detects and installs the appropriate device drivers for the new RAID controller. 10 Click Finish to complete the installation. 11 Reboot the server. Updating an Existing Windows 2000, Windows Server 2003, Windows XP, or Windows Vista Driver Perform the following steps to update the Microsoft Windows driver for the PERC 5 controller already installed on your system.
Dell_PERC5_UG.book Page 42 Tuesday, February 13, 2007 6:02 PM Installing Windows Vista for a New RAID Controller Perform the following steps to configure the driver when you add the RAID controller to a system that already has Windows Vista installed. 1 Insert the Windows Vista DVD and reboot the system. 2 Select location information, such as your country and language. 3 Enter the Windows key. 4 Select the drive you want to install Windows on by highlighting your choice. 5 Select Load Driver if needed.
Dell_PERC5_UG.book Page 43 Tuesday, February 13, 2007 6:02 PM Installing the Red Hat Enterprise Linux Driver Use the procedures in this section to install the driver for Red Hat Enterprise Linux AS (versions 3 and 4) and ES (versions 3 and 4). The driver is updated frequently. To ensure that you have the current version of the driver, download the updated Red Hat Enterprise Linux driver from the Dell Support website at support.dell.com.
Dell_PERC5_UG.book Page 44 Tuesday, February 13, 2007 6:02 PM Creating a Driver Update Diskette Perform the following steps to create the DUD using the DKMS tool: 1 Install the DKMS-enabled megaraid_sas driver rpm package on a system running a Red Hat Enterprise Linux operating system. 2 Type the following command in any directory: dkms mkdriverdisk -d redhat -m megaraid_sas -v -k This starts the process to create the megaraid_sas DUD image.
Dell_PERC5_UG.book Page 45 Tuesday, February 13, 2007 6:02 PM Upgrading the Kernel If you run the up2date utility to upgrade the kernel, you must reinstall the DKMS-enabled driver packages.
Dell_PERC5_UG.book Page 46 Tuesday, February 13, 2007 6:02 PM DUD Creation Procedure Perform the following steps to create the DUD using the DKMS tool. 1 Install the DKMS-enabled megaraid_sas driver rpm package on a system running a SUSE Linux operating system. 2 Type the following command in any directory: dkms mkdriverdisk -d redhat -m megaraid_sas -v -k This starts the process to create the megaraid_sas DUD image.
Dell_PERC5_UG.book Page 47 Tuesday, February 13, 2007 6:02 PM Upgrading the Kernel If you run the up2date utility to upgrade the kernel, you must reinstall the DKMS-enabled driver packages.
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Dell_PERC5_UG.book Page 49 Tuesday, February 13, 2007 6:02 PM RAID Configuration and Management Storage management applications enable you to manage and configure the RAID system, create and manage multiple disk groups, control and monitor multiple RAID systems, and provide online maintenance.
Dell_PERC5_UG.book Page 50 Tuesday, February 13, 2007 6:02 PM The following sections will help you attain the basic knowledge needed to use the BIOS Configuration Utility. See the online help option by pressing to obtain additional information about the ongoing operation. NOTE: PERC 5 controller configuration utility refreshes the screen to show changes to information on the screen. The refresh occurs when you press a key or every 15 seconds if you do not press a key.
Dell_PERC5_UG.book Page 51 Tuesday, February 13, 2007 6:02 PM Table 5-1. Notation Menu Navigation Keys Meaning and Use Example Use the right arrow key to open a submenu, move from a menu heading to the first submenu, or move to the first item in that submenu. If you press the right arrow key at a menu heading, the submenu will expand. Press it again to go to the first item in the submenu. The right arrow key is also used to close a menu list in a popup window. Word wrap is supported.
Dell_PERC5_UG.book Page 52 Tuesday, February 13, 2007 6:02 PM Table 5-1. Menu Navigation Keys (continued) Notation Meaning and Use Example Press to move the cursor to the next control on a Dialog or page. Press to move the cursor to the next parameter you want to change. Press to move the cursor to the previous control on a Press dialog or page. to move the cursor from Virtual Disk to Disk Group #.
Dell_PERC5_UG.book Page 53 Tuesday, February 13, 2007 6:02 PM Use the configuration utilities to perform the following tasks: • Access controllers, virtual disks, and physical disks individually. • Select a host controller to work on. • Create hot spare physical disks. • Configure virtual disks. • Initialize one or more virtual disks. • Rebuild failed physical disks. The following sections describe the menu options and provide detailed instructions used to perform the configuration tasks.
Dell_PERC5_UG.book Page 54 Tuesday, February 13, 2007 6:02 PM Virtual Disk Management (VD Mgmt) The Virtual Disk Management screen, VD Mgmt, is the first screen that displays when you access the BIOS Configuration Utility.
Dell_PERC5_UG.book Page 55 Tuesday, February 13, 2007 6:02 PM Table 5-2.
Dell_PERC5_UG.book Page 56 Tuesday, February 13, 2007 6:02 PM Virtual Disk Actions Table 5-3 describes the actions you can perform on virtual disks. See "Setting Up Virtual Disks" on page 58 for procedures you can use to perform these actions. Table 5-3. Virtual Disk Menu Options Option Description Create a new virtual disk Creates a new virtual disk from one or more physical disks. Manage dedicated hot spares Creates or deletes a hot spare that can be dedicated to a single redundant virtual disks.
Dell_PERC5_UG.book Page 57 Tuesday, February 13, 2007 6:02 PM Physical Disk Actions Table 5-4 describes the actions you can perform on physical disks. See "Setting Up Virtual Disks" on page 58 for procedures that can be used to perform these actions. Table 5-4. Physical Disk Options Option Description Rebuild Regenerates all data to a replacement disk in a redundant virtual disk (RAID level 1, 5, 10, or 50) after a disk failure.
Dell_PERC5_UG.book Page 58 Tuesday, February 13, 2007 6:02 PM Table 5-5. Controller Management Options Option Description Enable Controller BIOS Select this option to enable the controller BIOS. If the boot device is on the RAID controller, the BIOS must be enabled. Disable the BIOS to use other boot devices. In a multiple controller environment, you can enable BIOS on multiple controllers.
Dell_PERC5_UG.book Page 59 Tuesday, February 13, 2007 6:02 PM When you define the virtual disks, you can set the virtual disk parameters described in Table 5-6. • Stripe element size • Write policy • Read policy Table 5-6. Virtual Disk Parameters and Descriptions Parameter Description Stripe Element Stripe Element Size specifies the size of the segments written to each physical disk in a RAID 0, Size 1, 5, 10, and 50 virtual disk.
Dell_PERC5_UG.book Page 60 Tuesday, February 13, 2007 6:02 PM Creating Virtual Disks NOTE: PERC 5 does not support creation of a virtual disk that combines SAS and SATA physical disks Perform the following steps to create virtual disks. 1 During host system bootup, press when the BIOS banner displays. The Virtual Disk Management screen displays. NOTE: This procedure describes the BIOS Configuration Utility screens in Tree View. 2 Highlight Controller #.
Dell_PERC5_UG.book Page 61 Tuesday, February 13, 2007 6:02 PM e Press to move the cursor to the Read Policy to change it if desired. f Press to display the options, Read Ahd, No Read, or Adaptive, then press the down arrow key to highlight an option and press . g Press to move the cursor to the Write Policy to change it if desired. h Press to display the options, Write-Through or Write-Back, then press the down arrow key to highlight an option and press .
Dell_PERC5_UG.book Page 62 Tuesday, February 13, 2007 6:02 PM Importing or Clearing Foreign Configurations Using the VD Mgmt Menu When a foreign configuration exists, the BIOS banner displays the message Foreign configuration(s) found on adapter. In addition, a foreign configuration, when present, appears on the right side of the VD Mgmt screen. You can use the VD Mgmt menu to import the existing configuration to the RAID controller or clear the existing configuration to create a new one.
Dell_PERC5_UG.book Page 63 Tuesday, February 13, 2007 6:02 PM Perform the following procedures on the Foreign Configuration View screen to manage foreign configurations in each specific case: 1 If all or some of the physical disks in a configuration are removed and re-inserted, the controller considers the drives to have foreign configurations. Perform the following steps: a Select Foreign Configuration View to display the foreign configuration information on the Foreign Configuration View screen.
Dell_PERC5_UG.book Page 64 Tuesday, February 13, 2007 6:02 PM Setting LED Blinking The LED blinking option indicates when physical disks are being used to create a virtual disk. You can choose to start or stop the LED blinking. Perform the following steps to start or stop this option. 1 Press to access the PD Mgmt screen. A list of physical disks appears. The status of the each disk displays under the heading State. 2 Press the down arrow key to highlight a physical disk.
Dell_PERC5_UG.book Page 65 Tuesday, February 13, 2007 6:02 PM Creating Global Hot Spares A global hot spare can be used to replace a failed physical disk in any redundant array as long as the capacity of the global hot spare is equal to or larger than the coerced capacity of the failed physical disk. Perform the following steps to create global hot spares. 1 Press to access the PD Mgmt screen. A list of physical disks displays. The status of the each disk displays under the heading State.
Dell_PERC5_UG.book Page 66 Tuesday, February 13, 2007 6:02 PM Enabling the Alarm to Alert in Case of Physical Disk Failures The PERC 5/E Adapter uses an audible alarm to alert you to key critical and warning events involving the virtual disks or physical disks. You can use the BIOS Configuration Utility to enable or disable the on-board alarm tone. See Table 6-8 for the list of critical and warning events, severity levels of the events, and audible codes.
Dell_PERC5_UG.book Page 67 Tuesday, February 13, 2007 6:02 PM Stopping Background Initialization Background initialization is the automated check for media errors in which parity is created and written in the process. BGI does not run on RAID 0 virtual disks. Under certain conditions, Ctrl-R will ask you if you want to stop BGI in progress.
Dell_PERC5_UG.book Page 68 Tuesday, February 13, 2007 6:02 PM 3 Press . The action menu appears. 4 Select Delete VD and press . 5 On the VD Mgmt screen, select Space Allocation to display the amount of free space available after you delete the virtual disk. NOTE: On the PERC 5/i RAID controller, after you delete a virtual disk, any hot spares dedicated to that virtual disk become global hot spares. Deleting Disk Groups You can delete disk groups using the BIOS Configuration Utility.
Dell_PERC5_UG.book Page 69 Tuesday, February 13, 2007 6:02 PM 3 Press the spacebar to select Enable Controller BIOS. An X displays next to Enable Controller BIOS. 4 Press to move the cursor to the Apply button, and then press to apply the selection. The controller BIOS is enabled. To disable the controller BIOS, use the spacebar to deselect the Enable Controller BIOS control, and then select Apply and press .
Dell_PERC5_UG.book Page 70 Tuesday, February 13, 2007 6:02 PM 3 Use the spacebar to deselect the settings for the options in the Settings box. 4 Press to move the cursor to the Advanced box. 5 Press the spacebar to select Advanced. An X displays next to Advanced. 6 Press to move the cursor to Select Defaults. 7 Press the spacebar to select Select Defaults. The defaults are automatically selected for the controller settings and display in the Settings box.
Dell_PERC5_UG.book Page 71 Tuesday, February 13, 2007 6:02 PM Troubleshooting To get help with your Dell™ PowerEdge™ Expandable RAID Controller (PERC) 5 controller, you can contact your Dell Technical Service representative or access the Dell Support website at support.dell.com. Virtual Disks Degraded A redundant virtual disk is in a degraded state when one physical disk has failed or is inaccessible.
Dell_PERC5_UG.book Page 72 Tuesday, February 13, 2007 6:02 PM General Problems Table 6-1 describes general problems you might encounter, along with suggested solutions. Table 6-1. General Problems Problem Suggested Solution The device displays in Device Manager Reinstall the driver. See the driver installation procedures in the section but has a yellow bang (exclamation "Driver Installation" on page 39. point). The device does not appear in Device Manager.
Dell_PERC5_UG.book Page 73 Tuesday, February 13, 2007 6:02 PM Physical Disk Failures and Rebuilds Table 6-3 describes issues related to physical disk failures and rebuilds. Table 6-3. Physical Disk Failure and Rebuild Issues Issue Suggested Solution Rebuilding a physical disk after one of them is in an inaccessible state. If you have configured hot spares, the PERC 5 controller automatically tries to use one to rebuild a physical disk that is in an inaccessible state.
Dell_PERC5_UG.book Page 74 Tuesday, February 13, 2007 6:02 PM Table 6-3. Physical Disk Failure and Rebuild Issues (continued) Issue Suggested Solution A physical disk becomes The rebuild operation for the inaccessible physical disk starts automatically after the reconstruction is completed. inaccessible during a reconstruction process on a redundant virtual disk that has a hot spare. A physical disk is taking longer A physical disk takes longer to rebuild when under high stress.
Dell_PERC5_UG.book Page 75 Tuesday, February 13, 2007 6:02 PM PERC 5 Post Error Messages In PERC 5 controllers, the BIOS (read-only memory, ROM) provides INT 13h functionality (disk I/O) for the virtual disks connected to the controller, so that you can boot from or access the physical disks without the need of a driver. Table 6-5 describes the error messages and warnings that display for the BIOS. Table 6-5. BIOS Errors and Warnings Message Meaning BIOS Disabled.
Dell_PERC5_UG.book Page 76 Tuesday, February 13, 2007 6:02 PM Table 6-5. BIOS Errors and Warnings (continued) Message Meaning Firmware version inconsistency was detected. The adapter has New firmware has been flashed that is incompatible with the previous version. The cache contains data that has not been written to the physical disks and that cannot be recovered. Check data integrity. You may need to restore the data from a backup. recovered, but cached data was lost. Press any key to continue.
Dell_PERC5_UG.book Page 77 Tuesday, February 13, 2007 6:02 PM Table 6-5. BIOS Errors and Warnings (continued) Message Meaning The SAS cables for your system are improperly connected. Check Invalid SAS topology detected. the cable connections and fix any problems, then restart the Please check your cable system. You may need to restore your data from a backup. configurations, repair the problem, and restart your system. Multi-bit errors are detected on the controller.
Dell_PERC5_UG.book Page 78 Tuesday, February 13, 2007 6:02 PM Red Hat Enterprise Linux Operating System Errors Table 6-6 describes an issue related to the Red Hat® Enterprise Linux operating system. Table 6-6. Linux Operating System Error Error Message Suggested Solution kernel: sdb: asking for cache data failed This error message displays when the Linux Small Computer System Interface (SCSI) mid layer asks for physical disk cache settings.
Dell_PERC5_UG.book Page 79 Tuesday, February 13, 2007 6:02 PM Table 6-6. Linux Operating System Error (continued) Error Message Suggested Solution smartd[smartd[2338] Device: /dev/sda, Bad IEC (SMART) mode page, err=-5, skip device These error messages are caused by an unsupported command coming directly from the user application. This is a known issue in which user applications try to direct Command Descriptor Blocks to RAID volumes.
Dell_PERC5_UG.book Page 80 Tuesday, February 13, 2007 6:02 PM Table 6-8 lists the critical and warning events, severity levels of the events, and audible codes. Table 6-8.
Dell_PERC5_UG.book Page 81 Tuesday, February 13, 2007 6:02 PM Appendix: Regulatory Notices Regulatory Notices Electromagnetic Interference (EMI) is any signal or emission, radiated in free space or conducted along power or signal leads, that endangers the functioning of radio navigation or other safety service or seriously degrades, obstructs, or repeatedly interrupts a licensed radio communications service.
Dell_PERC5_UG.book Page 82 Tuesday, February 13, 2007 6:02 PM A Notice about Shielded Signal Cables: Use only shielded cables for connecting peripherals to any Dell device to reduce the possibility of interference with radio communications services. Using shielded cables ensures that you maintain the appropriate EMC classification for the intended environment. For parallel printers, a cable is available from Dell. If you prefer, you can order a cable from Dell on the World Wide Web at www.dell.com.
Dell_PERC5_UG.book Page 83 Tuesday, February 13, 2007 6:02 PM These limits are designed to provide reasonable protection against harmful interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.
Dell_PERC5_UG.book Page 84 Tuesday, February 13, 2007 6:02 PM CE Notice (European Union) CE Notice (European Union) This product has been determined to be in compliance with 73/23/EEC (Low Voltage Directive), 89/336/EEC (EMC Directive), and amendments of the European Union. European Union, Class A RF INTERFERENCE WARNING: This is a Class A product. In a domestic environment this product may cause radio frequency (RF) interference, in which case the user may be required to take adequate measures.
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Dell_PERC5_UG.book Page 95 Tuesday, February 13, 2007 6:02 PM información NOM (únicamente para México) La información siguiente se proporciona en el dispositivo o dispositivos descritos en este documento, en cumplimiento con los requisitos de la Norma oficial mexicana (NOM): Exportador: Dell Inc. One Dell Way Round Rock, TX 78682 Importador: Dell México, S.A. de C.V. Paseo de la Reforma 2620 - 11° Piso Col. Lomas Altas 11950 México, D.F. Enviar a: Dell México, S.A. de C.V.
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Dell_PERC5_UG.book Page 99 Tuesday, February 13, 2007 6:02 PM Glossary A Adapter An adapter enables the computer system to access peripheral devices by converting the protocol of one bus or interface to another. An adapter may also provide specialized function. For example, a RAID controller is a type of adapter that provides RAID functions. Adapters may reside on the system board or be an add-in card. Other examples of adapters include network and SCSI adapters.
Dell_PERC5_UG.book Page 100 Tuesday, February 13, 2007 6:02 PM software monitors the addresses of subsequent reads to see if the required data is already stored in cache memory. If it is already in cache memory (a cache hit), it is read from cache memory immediately and the main memory read is aborted (or not started). If the data is not cached (a cache miss), it is fetched from main memory and saved in cache memory.
Dell_PERC5_UG.book Page 101 Tuesday, February 13, 2007 6:02 PM Disk Subsystem A collection of disks and the hardware that controls them and connects them to one or more controllers. The hardware can include an intelligent controller, or the disks can attach directly to a system I/O bus controller. Distributed Parity Parity involves an extra bit added to a byte or word to reveal errors in storage (in RAM or disk) or transmission.
Dell_PERC5_UG.book Page 102 Tuesday, February 13, 2007 6:02 PM F Format A physical disk that has ceased to function, that consistently functions improperly, or that is inaccessible. The process of writing a specific value to all data fields on a physical disk, to map out unreadable or bad sectors. Because most physical disks are formatted when manufactured, formatting is usually done only if a physical disk generates many media errors.
Dell_PERC5_UG.book Page 103 Tuesday, February 13, 2007 6:02 PM I N Initialization Non Read Ahead The process of writing zeros to the data fields of a virtual disk and, in fault tolerant RAID levels, generating the corresponding parity to put the virtual disk in a Ready state. Initializing erases previous data and generates parity so that the virtual disk will pass a consistency check.
Dell_PERC5_UG.book Page 104 Tuesday, February 13, 2007 6:02 PM Online Capacity Expansion Patrol Read Operation to add capacity to an existing virtual disk by adding an additional physical disk while the host system is active, and without affecting data availability. A preventive measure that includes review of your system for possible physical disk errors that could lead to drive failure and damage data integrity.
Dell_PERC5_UG.book Page 105 Tuesday, February 13, 2007 6:02 PM • Failed: A physical disk that was originally configured as Online or Hot Spare, but on which the firmware detects an unrecoverable error. • Un-configured Bad: A physical disk on which the firmware detects an unrecoverable error; the physical disk was Un-configured Good or the physical disk could not be initialized. • Missing: A physical disk that was Online, but which has been removed from its location.
Dell_PERC5_UG.book Page 106 Tuesday, February 13, 2007 6:02 PM Read-Ahead Replacement Disk A memory caching capability in some controllers that allows them to read sequentially ahead of requested data and store the additional data in cache memory, anticipating that the additional data will be needed soon. Read-ahead supplies sequential data faster, but is not as effective when accessing random data. A physical disk replacing a failed member disk in a virtual disk.
Dell_PERC5_UG.book Page 107 Tuesday, February 13, 2007 6:02 PM SCSIport Spare ® The SCSIport driver is a feature of the Microsoft Windows® storage architecture, delivering SCSI commands to the storage targets. The SCSIport driver works well with storage using parallel SCSI. Single Bit ECC Errors ECC stands for error correcting code. ECC errors are errors that occur in the memory, which can corrupt cached data so that it has to be discarded.
Dell_PERC5_UG.book Page 108 Tuesday, February 13, 2007 6:02 PM Striping W Disk striping writes data across all physical disks in a virtual disk. Each stripe consists of consecutive virtual disk data addresses that are mapped in fixed-size units to each physical disk in the virtual disk using a sequential pattern. For example, if the virtual disk includes five physical disks, the stripe writes data to physical disks one through five without repeating any of the physical disks.
Dell_PERC5_UG.book Page 109 Tuesday, February 13, 2007 6:02 PM Index B consistency check, 56, 66, 100 E background initialization, 17, 99 stopping, 67 controller, 100 descriptions, 11 electrostatic discharge.
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