StorCase® Technology InfoStation® DXIFS-160/RAID SCSI Ultra160 RAID Controller Module User's Guide
i StorCase® Technology InfoStation® DXIFS-160/RAID SCSI Ultra160 RAID Controller Module User's Guide Part No. D89-0000-0122 B00 January 2003 StorCase Technology, Inc. 17600 Newhope Street Fountain Valley, CA 92708-9885 Phone (714) 438-1850 Fax (714) 438-1847 DXIFS-160/RAID User's Guide - Rev. B00 StorCase Technology, Inc.
ii LIMITED WARRANTY STORCASE TECHNOLOGY, Incorporated (StorCase) warrants that its products will be free from defects in material and workmanship, subject to the conditions and limitations set forth below. StorCase will, at its option, either repair or replace any part of its product that proves defective by reason of improper workmanship or materials.
iii Free Technical Support StorCase provides free technical support. If you experience any difficulty during the installation or subsequent use of a StorCase product, please contact StorCases Technical Support Department prior to servicing your system. This warranty covers only repair or replacement of defective StorCase products, as described above. StorCase is not liable for, and does not cover under warranty, any costs associated with servicing and/or installation of StorCase products.
iv Declaration of Conformity Company Name: StorCase Technology, Inc.
v Federal Communications Commission (FCC) Statement RADIO FREQUENCY INTERFERENCE STATEMENT You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate that equipment. This device complies with part 15 of the FCC rules.
vi Table of Contents INTRODUCTION ..................................................................................................................... Packaging Information .................................................................................................. Serial Number ................................................................................................................ General Description ...........................................................................................
vii Disk Configuration .............................................................................................. 35 Writeback Cache ................................................................................................ 35 SMART ................................................................................................................ 35 Option Configuration Menu ......................................................................................... 35 Cache Lock .......................
viii Warning and Error Events ................................................................................. Warnings .................................................................................................... Errors .......................................................................................................... Running the Diagnostic Menu .................................................................................... Using the Utility Menu .......................................
ix Figure A-1: Figure C-1: Figure C-2: Figure C-3: Figure D-1: Figure D-2: InfoStation RAID Controller Module Physical Dimensions .......................... View Event Log Screen ............................................................................... Typical Disk Detected Error ......................................................................... Typical Disk Channel Error ........................................................................... Administrator Utility Menu Tree ..............
Introduction 1 INTRODUCTION Packaging Information The StorCase Technology InfoStation RAID Controller Module (P/N DXIFS-160/RAID) is shipped in a container designed to provide protection and prevent damage during shipment. The controller module was carefully inspected before and during the packing procedure at the factory. Evidence of any damage to the module should be reported to the shipper immediately.
2 Introduction General Description CAUTION: Remove ALL power from the InfoStation before installing the RAID Controller Module. The RAID Controller Module contains NO USER SERVICEABLE PARTS inside the unit. Warranty is VOID if module is opened. Refer ALL servicing to qualified personnel! Danger of explosion if the RAID battery is incorrectly replaced! Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to manufacturer's instructions.
Introduction 3 This User's Guide describes the basic steps required to install the StorCase InfoStation RAID Controller Module inside the InfoStation external expansion chassis. This guide supplements documentation provided with the InfoStation. SE D/ LV SI SC 60 A1 TR UL IFS_42 Figure 1: InfoStation RAID Controller Module DXIFS-160/RAID User's Guide - Rev. B00 StorCase Technology, Inc.
4 Introduction InfoStation RAID Controller Module Panel (Figure 2) Host Channel 0 (In) - Connects to SCSI Host 0 Host Channel 0 (Out) - Connects to LVD/S.E. Multi-mode terminator (or other SCSI device) Host Channel 1 (In) - Connects to SCSI Host 1 Host Channel 1 (Out) - Connects to LVD/S.E.
Installation 5 INSTALLATION CAUTION: Remove ALL power from the InfoStation before installing the RAID Controller Module. The RAID Controller Module contains NO USER SERVICEABLE PARTS inside the unit. Warranty is VOID if module is opened. Refer ALL servicing to qualified service personnel! NOTES: The installation, configuration, and use of the InfoStation RAID Controller Module requires a certain level of expertise and experience on the part of the user/integrator.
6 Installation RAID CHANNEL CONFIGURATIONS NOTE: The installation, configuration, and use of the InfoStation RAID Controller Module requires a certain level of expertise and experience on the part of the user/integrator. Since there are many configuration options and variables (ie. host platforms, applications, etc.), only general guidelines will be discussed in this User's Guide. CAUTION: Offset VHDCI cable connectors must be used for proper fit.
Installation 7 T Disk Ch. 2 (7 Disks) I/O Repeater Module #1 InfoStation #4 Disk Ch. 2 NOTE: Maximum 15 Disks per SCSI Channel (8 Disks) I/O Repeater Module #1 InfoStation #3 T Disk Ch. 1 (7 Disks) I/O Repeater Module #1 InfoStation #2 Disk Ch. 1 (8 Disks) I/O Repeater Module #1 To Host 1 To Host 0 RAID Module InfoStation #1 IFS_RAID23 T =Terminator T T Figure 4: Typical InfoStation RAID Module 2x2 Single-Channel Configuration DXIFS-160/RAID User's Guide - Rev.
8 Installation Disk Ch. 2 T T (3 Disks) Disk Ch. 1 (3 Disks) I/O Repeater Module #2 I/O Repeater Module #1 NOTE: Maximum 15 Disks per SCSI Channel InfoStation #4 Disk Ch. 2 (4 Disks) Disk Ch. 1 (4 Disks) I/O Repeater Module #1 I/O Repeater Module #2 InfoStation #3 Disk Ch. 2 Disk Ch. 1 (4 Disks) (4 Disks) I/O Repeater Module #1 I/O Repeater Module #2 InfoStation #2 Disk Ch. 2 (4 Disks) Disk Ch.
Installation 9 T Disk Ch. 2 T (3 Disks) Disk Ch. 1 (3 Disks) I/O Repeater Module #1 I/O Repeater Module #2 Cable length should not exceed 12m each! NOTE: Maximum 15 Disks per SCSI Channel InfoStation #4 Disk Ch. 2 T (4 Disks) T Disk Ch. 1 (4 Disks) I/O Repeater Module #1 I/O Repeater Module #2 InfoStation #3 T T Disk Ch. 2 (4 Disks) Disk Ch. 1 (4 Disks) I/O Repeater Module #1 I/O Repeater Module #2 InfoStation #2 T T Disk Ch. 2 (4 Disks) Disk Ch.
10 Installation Figure 6: Example of InfoStation RAID Module Dual SCSI Host Configuration (Single InfoStation Chassis) StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 11 CONFIGURATION Configuration Overview To configure the DXIFS-160/RAID controller module, run the Administrator Utility via a computer serial port (cable provided).
12 Configuration To access the Administrator Utility via the UI Module RS-232 serial port, the user must first configure the Serial Port Set-Up in the UI Module (see below). Refer to the InfoStation User's Guide (specifically, sections "InfoStation User Interface" and "Serial Port Set-Up") for further information. NOTE: 1. Press ENTER at the Default Display so that display = Status. 2. Press DOWN until display = Setup. 3. Press ENTER until display = Alarm. 4. Press DOWN until display = Ser.
Configuration 13 To find HyperTerminal in Windows: 1. Click on Start (normally located at the bottom left of the Windows desktop) 2. Go to Programs 3. Go to Accessories 4.
14 Configuration Once the RAID Module is booted and the preferences have been set, a screen (Figure 8) appears displaying the following information: Controller Configuration Array information Time/Date Board Temperature Press Enter to display the Administrator Utility System Menu Screen (Figure 9). Figure 8: Boot-Up Screen StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 15 Figure 9: Administrator Utility System Menu Selecting Menu Options NOTE: The Administrator Utility has an Online Help option.
16 Configuration Array Menu The Array Menu can only be selected if there are one or more active arrays. A summary list of arrays is displayed. Each line in the list displays the array's number, LUN, RAID level, state, utility running, size, and name (thus, providing a quick overview of the entire RAID configuration without going to lower level menus).
Configuration 17 Size - Size of the entire array (expressed in MB or GB for arrays > 10GB) Chunk size - The array's stripe depth per device. WBcache - Displays the status of the writeback cache (enabled or disabled). Created - Date array was created. Utility - Utility Running - None, Verify, Reconstruct, Expand, or Initialize Figure 10: Array Status Screen Drive Status Use the é and ê keys to scroll through the drives. These are the drives that are currently members of the array.
18 Configuration Array Statistics The current statistics can be viewed or reset in this menu (Figure 11). The following statistics are available (Figure 12): Read - Total number of host read requests directed to the array. Write - Total number of host write requests directed to the array. SecRd - Total number of sectors read from the array. SecWt - Total number of sectors written to the array. Queue Depth - Current number of commands from the host that are queued up.
Configuration 19 Figure 12: Array Statistics Abort Initialization This command stops the initialization process during an array initialization. The array is marked as offline and cannot be used. The drives will remain array members and the array must be deleted before the drives can be used again. Verify Function The Verify function allows the user to verify data on the specified array (RAID 3, 4, 5, 50, and mirrored arrays only).
20 Configuration To verify an array: 1. Select Verify Function from the Array Menu and press Enter. 2. Select Start Verify from the Verify Function options and press Enter (Figure 13). The percentage of verification completed will then be displayed. Figure 13: Verify Function Options Screen StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 21 Expand Function (OCE) Online Capacity Expansion (OCE) allows the user to expand the arrays without having to stop I/O activity. Only one array can be expanded at a time, and the expansion of the array must be completed before expanding another array. NOTE: Once an OCE is started, it cannot be aborted! The number of drives that can be added to an array depends upon the RAID level (Table 4).
22 Configuration Figure 14: Expand Function Options Screen 4. Select the drives from the list of available drives and press Enter (Figure 15). The percentage of expansion completed will then be displayed. Figure 15: Start Expand Screen StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 23 Add Spare This command allows the user to add dedicated spares to the current array. It is enabled only if there are unconfigured drives that are available for use as a dedicated spare. If a mirrored, RAID 3, RAID 4, RAID 5, or RAID 50 array without spare drives (RAID 0 arrays and volume sets never have have spares) is created, up to four spare drives can be added later. Spare drives are activated automatically if a drive in the array fails.
24 Configuration Deleting a Dedicated Spare Drive To delete a spare drive: 1. Select Delete Spare from the Array Menu. 2. Select the spare drive to be deleted and then press Enter. A message will appear to confirm the deletion of the spare drive. NOTE: It is not necessary to reinitialize the array when a spare drive is deleted. Change LUN This command allows the user to change the LUN assigned to this array, as it appears under the controller's target ID from the host system's point of view.
Configuration 25 Add an Array NOTE: Before adding an array, the user may want to set some of the configuration parameters. For example, the user may want to set the backoff percentage, which will not affect the array after it has been created. This command allows the user to create a new RAID array. To add an array: 1. Select Add an Array from the System Menu and press Enter. 2. Type in a name for the array (or leave it blank) and press Enter (Figure 16).
26 Configuration 3. Select the LUN number for the array and press Enter. The first number to appear in the menu list is the suggested default LUN assignment. NOTE: 4. UNIX and Macintosh operating systems may require array LUNs to precede the bridge LUN. Any array with a LUN higher than the bridge may not be recognized by the system. Refer to section "Managing Controller LUNs" for further information. Select the array type: RAID 0, RAID 3, RAID 4, RAID 5, RAID 50, Volume or Mirrored (Figure 17).
Configuration 27 Table 5: Drive Requirements for each RAID Level RAID Level Min. # of Drives Max. # of Drives 0 2 15 3 3 15 4 3 15 5 3 15 50 6 30 Mirrored 2 15 Volume Set 1 1 IFS_56FC 5. Enter the number of drives (excluding spares) in the array and press Enter. 6. Select Select Drives and press Enter to view display all available drives, including the following information about each drive: Channel SCSI ID Drive capacity Drive manufacturer Drive model number Drive state 7.
28 9. NOTE: 10. NOTE: Configuration If applicable, select the Chunk Size and press Enter. Most applications will achieve better performance with larger chunk sizes. To complete the process, type Y to add the array or N to cancel. A message will appear to confirm that the array is being created and the percentage of initialization completed will also be displayed. Most operating systems (such as Windows NT 4.0) require the system to be rebooted to see the new array. Netware v3.12 and 4.
Configuration 29 Delete an Array NOTE: An array cannot be deleted while any utility (Initialize, Verify, Expand, or Reconstruct) is running on the array. The utility must first be aborted or allowed to be completed before deleting the array. To delete an array: 1. Select Delete an Array from the System Menu and press Enter. A list of arrays will appear on screen (Figure 18). Figure 18: Deleting an Array 2. Select the array to delete and press Enter. 3.
30 Configuration Pool Spare Menu This command displays the following information concerning any pool spares that may exist: Display Pool Spare Add Pool Spare Delete Pool Spare Pool Spares are available for usage by any of the arrays on the controller. However, if a pool spare is too small (smaller than an individual member in the array), it will not be used. Refer to section "Backoff Percent" for further information.
Configuration 31 Figure 19: Pool Spare Options Screen Deleting and Displaying Pool Spare Drives The Pool Spare Menu allows the user to view pool spares using the Display Pool Spare menu option, and removal of pool spares using the Delete Pool Spare menu option. Understanding Array Reconstruction Reconstruction of critical arrays is started automatically by the RAID Module if the appropriate spare drives are available.
32 Configuration Display Drives (Figure 20) This command displays the following: Channel SCSI ID Size Manufacturer Model number Firmware revision number Drive state - array number, dedicated spare, pool spare, leftover, available Array number - this array's sequential position in the controller's array list Member number - this drive's sequential position in the array Utility running - Expand, Verify, etc. Drives that are not members of any array are displayed as Leftover or Available.
Configuration 33 Configuration Menu The Configuration Menu (Figure 21) allows the user to configure the following controller parameters: - System time/date Target SCSI ID and bridge LUN Disk SCSI channel configuration (ID, maximum bus speed) SEP options and SEP LUN Settings Disk drive writeback cache and SMART settings Cache locking, battery options, and trust array Backoff percentage Utility priority Alarm mute/unmute Sample rate Restore default configuration settings Figure 21: Configuration Menu DXI
34 Configuration Set Date/Time This command allows the user to set the time and date on the controller. The time and date are used in the event log and to set the creation time stamp on the arrays. Host Configuration This command allows the user to set the SCSI target ID and the bridge LUN. Channel Configuration This command allows the user to set speed and initiator ID of the back-end SCSI disk channels (Figure 22).
Configuration 35 Disk Configuration This command allows the user to control writeback cache and Self-Monitoring And Reporting Technology (SMART) settings for all the disks at once. Changes take effect at the next rescan or reboot. To change the writeback cache setting for individual drives, use the Drive Utilities Menu. Refer to section "Drive Utilities Menu" for further information. Writeback Cache This feature allows the user to modify the setting for the drive's writeback cache setting.
36 Configuration Battery This command allows the user to run the controller without a battery. It is intended for use only if the controller is run with a UPS so that loss of power is prevented. The default setting is BATTERY ENABLED. If disabled, the controller will not give any warnings when it senses that the battery is uninstalled, nor will it disable the writeback cache. If the setting is changed, the controller will need to be rebooted.
Configuration 37 Utility Priority This command allows the user to change the priority at which all utilities run, when there are active I/O operations competing for the controller's CPU. The choices are: High Medium Low For example, select High if the highest priority is to get the array back to a fully fault-tolerant state. This will cause heavy I/O with the host to be slower than normal. Select Low if streaming data without interruption is more important than data redundancy.
38 Configuration Utilities Menu (Figure 23) Figure 23: Utilities Menu Rescan This command instructs the controller to probe all disk channels for new or removed disk drives. This option may be used when installing or removing drives. If a rescan is issued, all host I/O processing will be temporarily paused until all drives are detected and up to speed. StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 39 Hot Swap Pause CAUTION: This command halts active I/O to the host! DO NOT stay in the Hot Swap Pause mode for an extended period of time. An operating system time-out may occur (time varies according to the O/S). For example, Windows NT has a time limitation (during I/O activity) of 10 seconds. NOTE: Always use the Hot Swap Pause option before removing or replacing any drives in an array to ensure data integrity.
40 Configuration Hardware Information This command displays an information window that contains hardware information on the controller (this information is used by engineers for diagnostic purposes). Press Ctrl-E to view full details. LUN Information This command allows the user to display an information window, providing all of the LUN settings for the controller. The bridge LUN is the LUN used by CAPI. The SEP LUN is shown as either a number or DISA.
Configuration 41 Drive Utilities Menu This section allows system integrators to perform special testing. Blink Drive LED This command instructs the user-selected drive to blink its LED. The drive will continue to blink its LED until either: User presses Esc before the Administrator Utility times out User issues the Blink Drive LED command again, which will toggle the command OFF.
42 Configuration Stop Unit WARNING: DO NOT use during normal operation! This command is used by engineering when testing various array configurations and should not be used in normal operation. Test Unit Ready This command issues a Test Unit Ready command to the selected disk. Disk Cache Menu WARNING: Changing an individual disk's writeback cache setting may take the drive offline and cause the array to become critical.
Configuration 43 However, the controller permits writeback cache settings to be changed on a member drive of a fault-tolerant array, because it can remove the drive from the array to perform the operation. The following steps summarize how the controller handles disk writeback cache changes: 1. The recommended method to change an individual drive's writeback cache settings is to issue the command to available (nonmember drives); it also works safely on dedicated spares and pool spares. 2.
44 Configuration Using the Flash Utility The Flash Utility (Figure 26) resides in the embedded firmware of the RAID Controller Module. Accessing the Flash Utility Using a VT-100/ANSI Terminal To access the Flash Utility: 1. At the prompt, hold down the spacebar on the VT-100/ANSI terminal while rebooting the RAID Module (Figure 25). Figure 25: Accessing the Flash Utility StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
Configuration 45 If done correctly, the following menu should appear: Figure 26: Flash Utility Menu Downloading New Firmware Warning: When downloading a new firmware image, DO NOT interrupt power! To download new firmware (.bfl or .fla files), use Option 2 - Kermit or Option 3 -Xmodem depending on the file transfer protocols supported by the terminal emulator. Running Onboard Diagnostics To run onboard diagnostics, select Option 4 - Run Diagnostics.
46 Configuration Rebooting the RAID Module To continue to boot the RAID Module to the main banner screen, select Run Bridge. Monitoring the Battery Life CAUTION: Disabling the Battery Life Monitor is not recommended! Battery failure during normal operation disables writeback cache, and leaves the system exposed to data corruption in the event of power loss. To change the battery life monitor options, select Utility Menu and then Battery Life Monitor Options.
Appendix A - Specifications/Dimensions 47 APPENDICES DXIFS-160/RAID User's Guide - Rev. B00 StorCase Technology, Inc.
48 Appendix A - Specifications/Dimensions Appendix A - Specifications/Dimensions InfoStation RAID Controller Modules conform to the Small Computer Systems Interface (SCSI) Standard set by the American National Standards Institute (ANSI). The following RAID Controller Module specifications and dimensions are provided for reference only. Physical Specifications Height 2.16" (54.9mm) Width 10.01" (254.3mm) Depth 10.45" (265.4mm) Weight 5.0 lbs (2.
Appendix A - Specifications/Dimensions 49 8.95 (227.3mm) Top View 10.45 (265.4mm) Right Side View Front View 2.16 (54.9mm) 10.01 (254.3mm) 0.24 (6.1mm) 0.61 (15.5mm) Figure A-1: DXIFS-160/RAID Physical Dimensions (Dimensions are for reference only) DXIFS-160/RAID User's Guide - Rev. B00 StorCase Technology, Inc.
50 Appendix B - Array Basics Appendix B - Array Basics The InfoStation RAID Controller Module allows the set up and management of disk arrays. A disk array is a group of disks that appears to the system as a single virtual disk. This is accomplished through software contained in the RAID controller. RAID (Redundant Array of Independent Disks) refers to disk arrays in which part of the array storage capacity may be used to store redundant information.
Appendix B - Array Basics 51 A mirrored array is also highly reliable, because both disks in the pair must fail for the array to fail. For example, an array of five pairs can still maintain integrity even if five disks fail, as long as each pair is left with one good disk. The main disadvantage of a mirrored array is cost. Since all disks must have a twin, twice the number of disks must be used in the array capacity (an eight-disk array contains only four disks of usable capacity).
52 Appendix B - Array Basics RAID 50 RAID 50 arrays contain redundant information in the form of parity data, which is calculated block-by-block for all user data. The partity information is distributed across the disks in the array and occupies the equivalent capacity of approximately one disk. Data is interspersed with the parity information. If one disk in the array fails, the data on the failed disk can be reconstructed from the parity data and user data on the remaining disks.
Appendix B - Array Basics 53 Comparing RAID Levels Table B-1 illustrates the differences between the various RAID levels.
54 Appendix B - Array Basics Table B-1: RAID Level Minimum # of Drives RAID 5 3 RAID Level Comparisons (cont'd) Description Pros Cons Block-level data striping with distributed parity Best cost and performance for transactionoriented networks Write performance is slower than RAID 0 or RAID 1 Very high performance and data protection Supports multiple simultaneous read/writes Can also be optimized for large, sequential requests RAID 50 6 Combination of RAID 0 (data striping) and RAID 5 with d
Appendix C - Troubleshooting 55 Appendix C - Troubleshooting Terminal Emulator and COM Port Problems Screen continuously puts out garbage characters. The likely cause is a baud rate mismatch between the terminal emulator and the RAID Controller Module. The correct baud rate is 115,200. Check to make sure the terminal emulator is set to the correct baud rate. NOTE: Some terminal emulators do not immediately change to the new baud rate settings.
56 Appendix C - Troubleshooting Host SCSI Channel Problems Host system does not see the controller. Verify in the Ctrl-E status screen that there is Host Channel negotiation. Verify that the host channel target ID and array LUN numbers are configured correctly and not over-lapping. Host SCSI BIOS scan hangs. Check that termination is set correctly at the system and the drive enclosure.
Appendix C - Troubleshooting 57 Problems During Boot-Up Controller failed the onboard memory test. The internal CPU memory failed. Replace the controller. System hangs at Loading Bridge during BFLU Loader Menu. Reflash the firmware to ensure that the latest version is being used (refer to section "Downloading New Firmware" for further information). If the controller is unable to update the firmware or if the update firmware does not correct the problem, replace the controller.
58 Appendix C - Troubleshooting Table C-1: POST Diagnostic Errors and Solutions Diagnostic Failure Solutions Default hardware register Replace the controller Default chip set register Replace the controller Voltage/temperature 1. Check the enclosure for a proper supply of Vcc and +12V 2. Check for thermal problems in the enclosure 3.
Appendix C - Troubleshooting 59 Controller Problems Controller's Activity LED does not turn on. Check that 5V power is being supplied to the controller. Check the RS-232 interface for poweron initialization and/or diagnostics errors. Check the Administrator Utility for any outstanding events. Controller's Activity LED is on but there is no RS-232 display. Check that the RS-232 cable is the correct type (direct connect).
60 Appendix C - Troubleshooting Warning and Error Events There are a number of conditions that trigger warning and error events, activate the alarm, and affect the ACTIVITY and ERROR LEDs. The alarm will sound when the Administrator Utility displays a warning or error event. Press Esc to turn the alarm OFF. Warnings Warning events alert the user of any problems associated with the controller or array. When a warning event occurs, the problem should be corrected as soon as possible.
Appendix C - Troubleshooting 61 Table C-2: Warning Events Event Definition Recommended Action BATT FAIL INFO A warning condition in the battery pack and/or charging interface has been detected. Replace the battery. REPLACE BATTERY The battery is approaching its 3 year life span. Replace the battery. ARRAY CRITICAL One or more drives were downed and the array is online but no longer fault-tolerant. Add a spare to the array or to the spare pool and replace the bad drives.
62 Appendix C - Troubleshooting Errors Error events alert the user of any failures associated with the InfoStation, controller, or disk drives. When an error event occurs, the problem should be corrected IMMEDIATELY. Table C-3 defines the error events and the recommended action to take for each. Table C-3: Error Events Event Definition Recommended Action VOLT/TEMP FAIL The analog to digital convertor detected a temperature and/ or voltage in the failure range. Check the ambient temperature.
Appendix C - Troubleshooting 63 Using the Utility Menu The Utility Menu allows the user to initialize the controller if it had a previous configuration. It also allows the user to clear the battery backup if the controller is using battery backup (and the data is not needed). To run the Utility Menu, follow these steps: 1. Reboot the controller and hold down the spacebar at the prompt (refer to section "Using the Flash Utility" for further information). The Flash Utility menu will appear. 2.
64 Appendix C - Troubleshooting To view the entire screen of events all at once: 1. Press Ctrl-E to switch screens until the Event Log screen appears (the "Event Log" is located in the lower left corner of the screen). 2. Use this screen to view multiple events simultaneously. - U moves the screen up a page. D moves the screen down a page. E moves to the last event at the end of the list H moves to the first event at the beginning of the list. P dumps the entire Event Log to the screen.
Appendix C - Troubleshooting 65 Disk Detected Errors Figure C-2 shows a typical disk detected error. Refer to Table C-4 for Sense Key codes and their descriptions.
66 Appendix C - Troubleshooting Table C-5: ASC/ASCQ Codes and Descriptions ASC ASCQ Description 0C 02 Write error - auto reallocation failed 0C 03 Write error - recommend reassignment 11 00 Unrecovered read error 11 01 Read retries exhausted 11 02 Error too long to correct 11 03 Multiple read errors 11 04 Unrecovered read error - auto reallocate failed 11 0B Unrecovered read error - recommend reassignment 11 0C Unrecovered read error - recommend rewrite the data 47 00 SCS
Appendix C - Troubleshooting 67 Disk Channel Errors NOTE: Most disk channel errors are informational, since the controller will retry to correct any problem. Disk channel errors occur while talking to back-end devices that are detected by the controller rather than the disk drive. An example is a parity error on data received from a disk drive. Some disk channel errors are displayed as text strings, others are displayed as hexadecimal codes.
68 Appendix C - Troubleshooting Table C-6: Error Code Disk Channel Error Codes and Descriptions Description 04 Data overrun or underrun occurred while getting sense data 05 Request for sense data failed 20 Selection timeout (displayed as Sel Timout) 21 Controller detected an unrecoverable protocol error on the part of the target 22 Unexpected bus-free condition (displayed as Unex Bsfree) 23 Parity error on data received from a target (displayed as Parity Err 24 Data overrun or underr
Appendix D - Administrator Utility Menu Tree 69 Appendix D - Administrator Utility Menu Tree Array Status Array Menu #1-24 Array Status Drive Status Array Statistics Abort Initialization Verify Function Expand Function Add Spare Delete Spare Change LUN Change Array Name Trust Array Add an Array Enter Array Name Enter LUN Select RAID Type # of Drives Select Drives Chunk Sizes # of Spares Delete an Array Array # Pool Spare Menu Display Pool Spare Add Pool Spare Delete Pool Spare System Menu Array Menu Add
70 Appendix D- Administrator Utility Menu Tree Set Date/Time Set Time Set Date Host Configuration Target ID Bridge LUN Channel Configuration Channel Speed SEP Setting Poll Rate Temperature Slot Flags Global Flags SEP LUNs Configuration Menu Set Date/Time Host Config Channel Config SEP Config Disk Config Option Config Backoff Percent Utility Priority Alarm Mute New Sample Rate Restore Defaults System Menu Array Menu Add an Array Delete an Array Utilities Menu Rescan Hot Swap Pause Hardware Info LUN Info
Reader's Comments 71 Reader's Comments Please take a few moments when your computer system is up and running to send us your ideas and suggestions for improving our products and documentation.
Reader's Comments CUT ALONG THIS LINE FROM BOTTOM TO TOP OF PAGE 72 FOLD ALONG THIS LINE AND STAPLE SHUT NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES B U S I N E S S R E P LY M A I L FIRST CLASS MAIL PERMIT NO. 10686 SANTA ANA, CA POSTAGE WILL BE PAID BY ADDRESSEE TECHNOLOGY CORPORATION 17600 NEWHOPE STREET FOUNTAIN VALLEY CA 92708-9885 StorCase Technology, Inc. DXIFS-160/RAID User's Guide - Rev.
