StorCase® Technology InfoStation® SCSI Ultra160 Dual RAID Controller Module Unit User's Guide
i StorCase® Technology InfoStation® SCSI Ultra160 Dual RAID Controller Module Unit User's Guide Part No. D89-0000-0181 A03 January 2003 StorCase Technology, Inc. 17600 Newhope Street Fountain Valley, CA 92708-9885 Phone (714) 438-1850 Fax (714) 438-1847 Dual RAID Module User's Guide - Rev. A03 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 Monitoring System Status .......................................................................................... 62 Displaying the Event Log ................................................................................... 62 Viewing the Most Recent Event ........................................................................ 63 Viewing One Event at a Time ............................................................................ 63 Viewing a Whole Screen of Events ..............................
viii Enabling/Disabling Write-back Cache .............................................................. Displaying Disk Cache Status .......................................................................... Enabling/Disabling SMART Changes ............................................................... Blinking a Drive LED .......................................................................................... Taking Down a Drive ..........................................................................
ix List of Figures Figure 1: Figure 2A: Figure 2B: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Figure 20: Figure 21: Figure 22: Figure 23: Figure 24: Figure 25: Figure 26: Figure 27: Figure 28: Figure 29: Figure 30: Figure 31: Figure 32: Figure 33: Figure 34: Figure 35: Figure 36: Figure 37: Figure 38: Figure 39: Figure 40: Figure 41: Figure 42: Figure 43: Figure 44: Figur
x Figure 47: Figure 48: Figure 49: Figure 50: Figure 51: Figure 52: Figure 53: Figure 54: Figure 55: Figure 56: Figure 57: Figure 58: Figure 59: Figure 60: Figure 61: Figure 62: Figure 63: Figure 64: Figure 65: Figure 66: Figure 67: Figure 68: Figure 69: Figure 70: Figure 71: Figure 72: Figure 73: Figure 74: Figure 75: FIgure 76: Figure 77: Figure 78: Figure 79: Figure 80: Figure 81: Figure 82: Figure 83: Figure 84: Figure 85: Figure 86: HW Info Screen ......................................................
xi List of Tables Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Terminal Program Preferences .......................................................................... 18 Terminal Program Communications Parameters ............................................... 18 Selecting Menu Options ..................................................................................... 20 Drive Requirements for each RAID Level .........................................................
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Introduction 1 INTRODUCTION Packaging Information The StorCase Technology InfoStation Dual RAID Controller Module unit is shipped in a con-tainer designed to provide protection and prevent damage during shipment. The unit was carefully inspected before and during the packing procedure at the factory. Evidence of any damage to the unit should be reported to the shipper immediately.
2 Introduction General Description CAUTION: Remove ALL power from the InfoStation before installing the Dual RAID Controller Module unit. The RAID Controller Module contains NO USER SERVICEABLE PARTS. Warranty is VOID if module is opened. Refer ALL servicing to qualified personnel! WARNING: 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 Dual RAID Controller Module unit inside the InfoStation external expansion chassis. This guide supplements documentation provided with the InfoStation. IFSII_DR1 Figure 1: InfoStation Dual RAID Controller Module Unit Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
4 Introduction Dual RAID Controller Module Unit Panel (Figure 2A) Controller A - Primary RAID controller Controller B - Secondary RAID controller 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.
Introduction 5 Eject Handle Locking Thumbscrew Cache LED Fault LED Host Ch. 0 (In) Disk Ch. 2 Controller B (Secondary) Controller A (Primary) Host Ch. 1 (In) IFSII_DR2 LEDs Host Ch. 1 (Out) RS-232 Serial Port Disk Ch. 1 Host Ch. 0 (Out) Captive Screw Figure 2A: Dual RAID Controller Module Unit Panel ACTIVITY (Reserved) B1 A1 B0 A0 DISABLED RS-232 IFSII_DR3 Figure 2B: Enlarged View of LEDs Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
6 Installation INSTALLATION CAUTION: Remove ALL power from the InfoStation before installing the Dual RAID Controller Module unit. The RAID Controller Module contains NO USER SERVICEABLE PARTS inside. Warranty is VOID if module is opened. Refer ALL servicing to qualified service personnel! NOTES: The installation, configuration, and use of the Dual RAID Controller Module option for the StorCase InfoStation chassis requires a certain level of expertise and experience on the part of the user/integrator.
Installation 7 IFSII_DR10 Figure 3: RAID Battery Backup Unit To install the RAID Battery Backup Unit(s): 1. Loosen and remove the #6-32 Phillips F.H. screw securing the blank plate to the Blower Module (Figure 4). Remove blank plate. 2. Install the RAID Battery Backup Unit into the blower module (Figure 5). 3. Tighten the thumbscrew to secure the Battery Backup Unit in place. Blank Plate #6-32 Phillips F.H.
8 Installation Blower Module RAID Battery Backup Unit Thumbscrew IFSII_DR9 Figure 5: Installing the RAID Battery Backup Unit into the Blower Module If installing only one (1) RAID Battery Backup Unit (for use with the Single RAID Controller Module unit), the Battery Backup Unit must be installed into the correct blower module. Refer to Figure 6 for correct Battery Backup Unit installation locations.
Installation 9 Battery Location for RAID Controller B Battery Location for RAID Controller A NOTE: For Single RAID Module configurations, install battery backup unit in this blower module ONLY! IFSII_DR11 NOTE: For Dual RAID Module configurations, install battery backup units in each blower module Figure 6: RAID Battery Backup Unit Installation Location Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
10 Installation DUAL RAID CHANNEL CONFIGURATIONS CAUTION: Controller StorCase for NOTES: Offset VHDCI cable connectors must be used for proper fit. Failure to use proper cables may result in damage to the I/O VHDCI connectors on the InfoStation I/O modules and Dual RAID Controller Module unit! RAID "Kits" containing external I/O cables are available; contact further ordering information.
Installation NOTES: 11 Controller A (Primary) disk channel SCSI ID is factory set to SCSI ID7. DO NOT configure any other devices to ID7 on the disk channel, or the configuration will fail to operate! Controller B (Secondary) disk channel SCSI ID is factory set to SCSI ID6. DO NOT configure any other devices to ID6 on the disk channel, or the configuration will fail to operate! Up to 14 disks per SCSI Channel with Dual RAID Controller Module Unit installed.
12 Installation NOTES: Controller A (Primary) disk channel SCSI ID is factory set to SCSI ID7. DO NOT configure any other devices to ID7 on the disk channel, or the configuration will fail to operate! Controller B (Secondary) disk channel SCSI ID is factory set to SCSI ID6. DO NOT configure any other devices to ID6 on the disk channel, or the configuration will fail to operate! Up to 14 disks per SCSI Channel with Dual RAID Controller Module Unit installed.
Installation NOTES: 13 Controller A (Primary) disk channel SCSI ID is factory set to SCSI ID7. DO NOT configure any other devices to ID7 on the disk channel, or the configuration will fail to operate! Controller B (Secondary) disk channel SCSI ID is factory set to SCSI ID6. DO NOT configure any other devices to ID6 on the disk channel, or the configuration will fail to operate! Up to 14 disks per SCSI Channel with Dual RAID Controller Module Unit installed.
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Configuration 15 CONFIGURATION Configuration Overview To configure the Dual RAID Controller Module unit, run the Administrator Utility via a computer serial port (cable provided).
16 Configuration Serial Port Set-Up 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. StorCase Technology, Inc. 1. Press ENTER at the Default Display so that display = Status. 2. Press DOWN until display = Setup. 3. Press ENTER so that display = Alarm.
Configuration 17 Serial Port Set-Up (cont'd) NOTES: Press CANCEL at anytime to exit the menu system and return to the Default Display. The menu system will automatically cancel after 15 seconds of User inactivity. Factory default is set to S.Port0. The following lists each InfoStation serial port option and its description. S.Port0 = InfoMon monitoring via the UI Module Serial Port (refer to the InfoMon User's Guide for further information). S.
18 Configuration 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.
Configuration 19 Once the Dual RAID Controller Module unit is booted and the preferences have been set, a screen (Figure 11) appears displaying the following information: Controller Configuration Array information Time/Date Board Temperature Press Enter to display the Administrator Utility System Menu Screen (Figure 12). Figure 11: Boot-Up Screen Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
20 Configuration Figure 12: Administrator Utility System Menu Selecting Menu Options NOTE: The Administrator Utility has an Online Help option.
Configuration 21 Creating and Managing Arrays and Partitions Using the Disk Array Administrator, the user can create and manage arrays and partitions. The following array-related functions can be performed: Create arrays Manage arrays Manage partitions Creating Arrays NOTE: Before creating more than one array, make sure that the host operating system supports multiple LUNs. Most operating systems do, or have an option to enable multiple LUN support.
22 Configuration Before an array is created, the user must decide whether or not to partition the array. There are two (2) ways to partition an array: 1. Single-partition array - an array that stores all data in a single partition and is accessed by a single LUN. 2. Multiple-partition array - an array that can have one or more partitions, with each partition assigned its own LUN.
Configuration 2. 23 Enter a name for the array and press Enter. Up to 20 characters (any character, including spaces) can be used. If no name is to be used, just press Enter (a name may be added or changed later). The system will now ask if you want to create one partition for the entire array. 3. Select Yes to create a single-partition array and press Enter (for creating multiplepartition arrays, refer to section "Creating a Multiple-Partition Array" for further information).
24 Configuration NOTES: Most UNIX, LINUX, and Macintosh operating systems require the controller LUN to be a higher value than all array LUNs. Before creating the first array, change the controller LUN to a higher value or choose NONE (best option) if not using CAPI to manage the arrays. This allows the first array to be seen at LUN 0. The system will now warn you about the LUN for UNIX and Macintosh (see notes above), the first time an array is created.
Configuration 25 Figure 16: Number of Drives Screen 6. Enter the number of drives (excluding spares) to be used in the array and press Enter. The Select Drives screen should now display (Figure 17). Figure 17: Select Drives Screen 7. Select the drives to be used for the array and press Enter. A drive is selected by highlighting it and then pressing Enter. Each selected drive turns gray in the drive list. To skip a drive, use the é or ê key.
26 8. Configuration If the Number of Spares screen displays, enter the number of spares to add and press Enter. This creates dedicated spares that can only be used in this array. A dedicated spare drive will not be available for any other use (refer to section "Managing Spares" for further information). If no spare is desired, simply enter 0. The Select Drives screen should now display (Figure 17). 9. Select the drive to be used as a dedicated spare and press Enter.
Configuration 10. 27 Select the chunk size and press Enter. The chunk size is the amount of contiguous data that is written to an array member before moving to the next member of the array. To determine the appropriate chunk size, refer to the operating system's documentation (for example, the default chunk size for Windows NT and many other operating systems is 64KB). The system will now confirm your request to create the array. 11. Select the desired option and press Enter.
28 Configuration Creating a Multiple-Partition Array This function allows the user to create multiple-partition arrays. Multiple-partition arrays work well with very large disk drives and make the most efficient use of disk space for fault tolerance (parity and spares). Refer to section "Understanding Partitions" for further information. To create a multiple-partition array: 1. Select Add an Array from the System Menu and press Enter. 2. Enter a name for the array and press Enter.
Configuration 29 If no spare is desired, simply enter 0. The Select Drives screen should now display (Figure 17). 8. Select the drive to be used as a dedicated spare and press Enter. NOTES: Only available drives (drives that aren't members of an array and are not assigned as dedicated or pool spares) will be displayed. A drive is selected by highlighting it and then pressing Enter. Each selected drive turns gray in the drive list. To skip a drive, use the é or ê key.
30 Configuration Managing Arrays The Disk Array Administrator allows the management of arrays, including: View array and drive status Stop the initialization process Add a partition Verify an array Reconstruct an array Expand array capacity Change array name Change array ownership Trust array Delete array Viewing Array and Drive Status Information Array and drive status information is available in two (2) ways: View array status View drive status Viewing Array Status This functio
Configuration 31 Number of Drives per Subarray - (for RAID 50 only) The number of drives in each underlying RAID 5 array. Number of Spare Drives - The number of spare drives dedicated to the array. Size - The size of the entire array (expressed in MB or GB for arrays larger than 10GB). Chunk Size - The array's chunk size. Date Created - The date the array was created. Utility - The utility running (None, Verify, Reconstruct, Expand, or Initialize).
32 2. Configuration Select the array to be viewed and press Enter. The Array Menu should now display (Figure 20). Figure 20: Array Menu Screen 3. Select Array Status and press Enter. The Array Status screen should now display, showing the status of the array selected (Figure 21). Figure 21: Array Status Screen 4. Press Esc to return to the Array Menu. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 33 Viewing Drive Status This function allows the user to view the status of the drives in an array, including: Drive Number - The drive's sequential position in the controller's drive list. Drive Status - Indicates the condition of the drive (whether it is up or down). Channel Number - Back-end disk bus number. Target ID Size - Size of the drive in MB. Status - Indicates the array name and member number (if drive is part of an array).
34 Configuration Figure 22: Drive Status Screen Use the é or ê key to scroll through the drives. These are the drives that are currently members of the array. 4. Press Esc to return to the Array Menu. Stopping the Array Initialization Process This function allows the user to stop the initialization process during an array initialization. After the process is stopped, the array is marked as offline and cannot be used.
Configuration 35 The system will now confirm your request to stop the initialization process. 4. Select Yes and press Enter. Adding a Partition In order to create a multiple-partition array, at least one partition on the array must be created before the array can be used. Partitions on a multiple-partition array can be created as long as there is free space (refer to section "Understanding Partitions" for further information). To add a partition: 1.
36 4. Configuration Select the free partition desired and press Enter. The Partition Size screen should now display (Figure 24). Figure 24: Partition Size Screen 5. Enter the desired partition size and press Enter. The Partition Name screen should now display (Figure 25). Figure 25: Partition Name Screen StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 6. 37 Enter a name for the partition and press Enter. Up to 20 characters (any character, including spaces) can be used. If no name is to be used, just press Enter (a name may be added or changed later). The Partition LUN screen should now display (Figure 26). Figure 26: Partition LUN Screen 7. Select the LUN for the partition and press Enter. The LUN displayed is the suggested default LUN assignment.
38 Configuration Verifying an Array This function allows the user to verify data on a specified array (RAID 3, RAID 4, RAID 5, RAID 50, and Mirrored arrays only). RAID 3, RAID 4, RAID 5, and RAID 50 - Verifies all parity blocks in the selected array and corrects any bad parity. Mirrored - Compares the primary and secondary drives. If a mismatch occurs, the primary is copied to the secondary. Verify an array whenever a problem is suspected. To verify an array: 1.
Configuration 39 Verification will begin and the percentage of verification will now be displayed. The array can be used during the verification process. 5. Press Esc to return to the Verify Menu. Viewing Verification Status This function allows the user to view the status of the verification process while it is running. To view verification status: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays (Figure 19).
40 Configuration Stopping the Verification This function allows the user to stop the verification process. Normally, it is best to let the verification process finish, although stopping the verification does not cause any damage to the data. To stop the verification process: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays (Figure 19). 2. Select the desired array and press Enter.
Configuration 41 Expanding Array Capacity (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. NOTES: Expanding an array does not change the size of the host operating system partitions that reside on the array (the controller only works at the block level, not at the file system level of the operating system).
42 Configuration To expand an array: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays (Figure 19). 2. Select the array to expand and press Enter. The Array Menu should now display (Figure 20). 3. Select Expand Function and press Enter. The Expand Menu should now display. 4. Select Start Expand and press Enter. The Number of Drives screen should now display (Figure 29). Figure 29: Expand Function Screen 5.
Configuration 43 Figure 30: Select Drives to Expand Screen 6. Select the drives to be added (from the list of available drives) and press Enter. Expansion will begin and the percentage of expansion will now display. NOTE: 7. Only available drives (drives that aren't members of an array and are not assigned as dedicated or pool spares) will be displayed. A drive is selected by highlighting it and then pressing Enter. Each selected drive turns gray in the drive list.
44 Configuration Viewing Expand Status This function allows the user to view the status of the expansion process while it is running. To view expand status: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays (Figure 19). 2. Select the array to view and press Enter. The Array Menu should now display (Figure 20). 3. Select Expand Function and press Enter. The Expand Menu should now display. 4.
Configuration 4. 45 Enter a name for the array and press Enter. Up to 20 characters (any character, including spaces) can be used. The system will now confirm the change. 5. Select Yes and press Enter. Changing Array Ownership If using the Active-Active mode, this function allows the user to change the ownership of any array between the controllers.
46 Configuration Trusting an Array This function allows the user to bring an array back online by resynchronizing the time/date stamp and any other metadata on a bad disk. This will make the disk an active member of the array again. Use this function whenever: One or more disks of an array start up more slowly or were powered ON after the rest of the disks in the array. This will cause the time/date stamps to differ, which the controller will interpret as a problem with the "late" disks.
Configuration 2. 47 Select Option Configuration and press Enter. The Option Configuration Menu should now display (Figure 32). Figure 32: Option Configuration Screen 3. Select Enable Trust Array and press Enter. The Enable Trust Array screen should now display. 4. NOTE: Select Enable and press Enter. The Enable Trust Array option is only enabled until it is used. Once the Trust Array option is used for an array, the option is automatically disabled. Dual RAID Module User's Guide - Rev.
48 Configuration 5. Press Esc twice to return to the System Menu. 6. Select Array Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays (Figure 19). 7. Select the desired array and press Enter. The Array Menu should now display (Figure 20). 8. Select Trust Array and press Enter. The system will now confirm your request to trust the array. 9. Select Yes and press Enter.
Configuration 49 Managing Partitions The Disk Array Administrator software allows the user to manage partitions, including: View partition status information Add a partition Expand a partition Change a partition name Change a partition LUN Delete a partition Understanding Partitions When an array is created, the array can either be all one partition or it can be set up with multiplepartitions.
50 Configuration When a partition is created, the user must specify the size (in MB) of the partition (Figure 34). Partition 1 Free Space IFS_77 Figure 34: Array after Creating One Partition The Disk Array Administrator assigns each partition a unique serial number and sequence number. Sequence numbers are assigned in the order the partitions are created.
Configuration 51 Partition 1 Partition 2 Partition 3 Partition 4 Partition 5 Free Space IFS_79 Figure 36: Array (with Five Partitions) after Expansion After an array is expanded, the user can either add a partition or expand the last partition to utilize the free space. One or more partitions can also be deleted to expand the last partition.
52 Configuration To view the status of a partition: 1. Display the Partition Menu. From the Array Menu From the All Partitions Menu 1. 1. Select Array Menu from the System Menu and press Enter. Select Partitions Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays. The Select Partition or Free Area screen should now display, along with a list of existing partitions and free space. 2. 2.
Configuration 2. 53 Select Partition Status and press Enter. The Partition Status screen should now display (Figure 38). 3. Press Esc to return to the Partition Menu. Figure 38: Partition Status Screen Viewing Partition Statistics This function allows the user to view the statistics of the partition, including the following: Read - Total number of host read requests directed to the partition Write - Total number of host write requests directed to the partition.
54 Configuration To view the statistics of a partition: 1. Display the Partition Menu. From the Array Menu From the All Partitions Menu 1. 1. Select Array Menu from the System Menu and press Enter. Select Partitions Menu from the System Menu and press Enter. The Select Array screen should now display, along with a list of existing arrays. The Select Partition or Free Area screen should now display, along with a list of existing partitions and free space. 2. 2.
Configuration 55 Figure 39: Partition Statistics Menu Screen 3. Select View Statistics and press Enter. The Partition Statistics screen should now display (Figure 40). 4. Press Esc to return to the Statistics Menu. Figure 40: Partition Statistics Screen Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
56 Configuration Resetting Partition Statistics This function allows the user to reset the following partition statistics to zero: Read Write SecRd SecWt I/O Size NOTE: Resetting statistics also resets the statistics for this partition that are included in the total overall statistics (refer to section "Displaying Overall Statistics" for further information). You may want to reset the statistics after monitoring performance, benchmark testing, or after a change in how the partition is used.
Configuration 57 2. Select Partition Statistics and press Enter. 3. Select Reset Statistics and press Enter. The Partition Statistics Menu should now display (Figure 40). The system will now confirm your request to reset the statistics. 4. Select Yes and press Enter. Expanding a Partition This function allows the user to expand an existing partition (with some limitations).
58 2. Configuration Select Expand Partition and press Enter. The Expand Partition screen should now display (Figure 41). Figure 41: Expand Partition Screen 3. Enter the desired size and press Enter. The system will now confirm your request to expand the partition. 4. Select Yes and press Enter. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 59 Changing a Partition Name This function allows the user to change the name of a partition. This does not affect the Target ID or LUN values of the partition. The controller does not allow the partition name to be changed while a utility is running. To change a partition name: 1. Display the Partition Menu. From the Array Menu From the All Partitions Menu 1. 1. Select Array Menu from the System Menu and press Enter. Select Partitions Menu from the System Menu and press Enter.
60 Configuration Changing a Partition LUN This function allows the user to change the LUN assigned to a partition, as it appears under the controller's Target ID. The change is immediate, although the host system may need to be rebooted for the partition to reflect the new LUN (refer to section "Understanding LUNs and Viewing LUN Information" for further information). NOTE: The partition LUN cannot be changed to a LUN that is already in use (the LUN mustbe reassigned before it can be used).
Configuration 61 Deleting a Partition This function allows the user to delete a partition. CAUTION: Deleting a partition also deletes all data stored in that partition! Be sure to back up all data before deleting a partition! NOTES: A partition cannot be deleted while any utility (Initialize, Verify, Expand, or Reconstruct) is running on the array. The utility must be stopped (if allowed) or completed before the partition can be deleted.
62 Configuration Monitoring System Status The user should monitor the system regularly to ensure that the controller, disks, and arrays are working properly.
Configuration 63 The event log will store the most recent 400 events. Events are numbered sequentially from 001-999. The event number resets to 001 after 999 events have been logged. NOTE: If there is a problem with the controller or an array, check the event log before calling technical support. Event log messages can help resolve the problem without having to call technical support. Refer to section "Troubleshooting" for further information.
64 Configuration Figure 42: Event Log Menu Screen 2. Select View Event Log and press Enter. The Event Log screen should now display the last event that occurred (Figure 43). Event Date Event Time Event Array Serial Number Figure 43: Event Log Screen 3. Press é to view the previous event. Press é to continue viewing previous events. 4. Press Esc to return to the Event Log Menu. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 65 Viewing a Whole Screen of Events This function allows the user to view events from the log file a whole screen at a time. This allows the user to review all recent events quickly (the events will display in chronological order, the most recent event being last in the list). To view a whole screen of events: 1. Press CTRL-E from anywhere in the Disk Array Administrator Utility. The first screen of events should now display (Figure 44).
66 Configuration Capturing the Event Log File This function allows the user to capture the entire event log (which is saved as a file on the user's hard drive). This allows the user to print the log or even attach it to an email. The steps below are for HyperTerminal. The procedure may differ for different terminal emulators. To capture the event log file: 1. With HyperTerminal running, press CTRL-E until the Event Log displays. 2. Select Capture Text from the Transfer Menu (in HyperTerminal).
Configuration 67 Displaying Hardware and Configuration Information This function allows the user to display the controller's hardware and configuration information. For example, the firmware version can be found here (technical support may request this information when troubleshooting). The hardware and configuration information can be displayed in two (2) ways: Hardware information only Hardware and configuration information To view hardware information only: 1.
68 Configuration Figure 46: Hardware Information Screen 3. Press Esc to return to the Utilities Menu. To view hardware and configuration information: 1. Press CTRL-E from anywhere in the Disk Array Administrator Utility. The first screen of events should now display (Figure 44). 2. Press CTRL-E again. The HW Info screen should now display (Figure 47). Figure 47: HW Info Screen StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 3. 69 Press CTRL-E again. Press Esc to return to the previous screen. The CFG Info screen should now display (Figure 48). Figure 48: CFG Info Screen 4. Press CTRL-E or ESC to return. Displaying Overall Statistics This function allows the user to view two (2) types of aggregate statistics for all partition LUNs: General statistics - (Similar statistics are also available for individual partition LUNs. Refer to section "Viewing Partition Statistics" for further information.
70 Configuration Host read/write histogram - shows how many host reads and writes fall into a particular size range (I/O ranges are based on powers of two). - 1 Sector - 2-3 Sectors - 4-7 Sectors - 8-15 Sectors - 16-31 Sectors - 32-63 Sectors - 64-127 Sectors - 128-255 Sectors - 256-511 Sectors - 512-1023 Sectors - 1024-2047 Sectors - 2048 (and up) Sectors This information may be helpful in interpreting performance based on individual system configurations and operating systems.
Configuration 71 To access the general array statistics: 1. Select Utilities Menu from the System Menu and press Enter. The Utilities Menu should now display (Figure 45). 2. Select Overall Statistics and press Enter. The Overall Statistics Menu should now display (Figure 49). Figure 49: Overall Statistics Menu Screen 3. Select View Statistics and press Enter. The View Statistics screen should now display (Figure 50). Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
72 Configuration Figure 50: View Statistics Screen 4. Press Esc to return to the Overall Statistics Menu. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 73 To access the read/write histogram: 1. Select Utilities Menu from the System Menu and press Enter. The Utilities Menu should now display (Figure 45). 2. Select Overall Statistics and press Enter. The Overall Statistics Menu should now display (Figure 49). 3. Select View R/W Histogram and press Enter. The View R/W histogram should now display (Figure 51). Figure 51: View R/W Histogram Screen 4. Press Esc to return to the Overall Statistics Menu.
74 Configuration Resetting Overall Statistics This function allows the user to reset ALL of the overall statistics back to zero (useful when monitoring performance or when performing benchmark testing). NOTE: Resetting overall statistics will also reset the statistics for each individual partition (refer to section " Resetting Partition Statistics" for further information). To reset the overall statistics: 1. Select Utilities Menu from the System Menu and press Enter.
Configuration 75 Managing Spares The controller will automatically reconstruct redundant (fault-tolerant) arrays (RAID 3, RAID 4, RAID 5, and RAID 50, and Mirrored) if an array becomes critical (and a sufficiently-sized spare drive is available). An array becomes critical when one or more member drives fail. The user can set up two (2) types of spare drives: Dedicated - Available drive that is assigned to a specific array.
76 Configuration Adding a Dedicated Spare This function allows the user to add dedicated spares to a specific array. If a member drive in the array fails, the controller will use a dedicated spare drive to automatically reconstruct the array. The user can add dedicated spares to Mirrored (RAID 1 and RAID 10) and parity (RAID 3, RAID 4, RAID 5, and RAID 50) arrays at anytime. Up to four (4) dedicated spare drives can be added to an array (refer to section "Creating Arrays" for further information).
Configuration 77 Deleting a Dedicated Spare This function allows the user to delete a dedicated spare drive from an array at anytime. To delete a dedicated spare: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen will display, along with a list of existing arrays (Figure 19). 2. Select the desired array and press Enter. The Array Menu should now display (Figure 20). 3. Select Delete Spare and press Enter. The List of Available Drives screen should now display. 4.
78 Configuration To enable dynamic spares: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select Option Configuration and press Enter. The Option Configuration Menu should now display (Figure 32). 3. Select Dynamic Spare Configuration and press Enter. The Dynamic Spare Configuration screen will display (Figure 52). The current setting is marked with an * next to it. Figure 52: Dynamic Spare Configuration Screen 4.
Configuration 79 Managing the Spare Pool The spare pool allows the user to have one or more disk drives available for the reconstruction of redundant arrays (Mirrored and Parity). Once a drive is assigned to the spare pool, it is no longer available for use as an array member or as a dedicated spare. If a pool spare is too small (not enough capacity to replace the smallest member in the array), the controller cannot use it.
80 Configuration Figure 54: Select Drives Screen 3. Select drive(s) to add as spares and press Enter. Deleting a Spare from the Spare Pool This function allows the user to delete a spare from the spare pool at anytime. To delete a spare from the spare pool: 1. Select Pool Spare Menu from the System Menu and press Enter. The Pool Spare Menu should now display (Figure 53). 2. Select Delete Pool Spare and press Enter.
Configuration 81 Displaying the Spare Pool This function allows the user to display a list of all the pool spares. To display the spare pool: 1. Select Pool Spare Menu from the System Menu and press Enter. 2. Select Display Pool Spares and press Enter. The Pool Spare Menu should now display (Figure 53). The Display Pool Spares screen will display, along with a list of all disk drives assigned to the spare pool. 3. Press Esc to return to the Pool Spare Menu. Dual RAID Module User's Guide - Rev.
82 Configuration Configuring the Controller The Disk Array Administrator allows the user to configure settings and perform a variety of functions on the controller, including: Reboot the controller Change the date/time Configure the host channels Configure the SCSI channels Configure the operating mode Change the sample rate Change the alarm mute setting Lock the cache setting Configure the battery Change the utility priority Rescan all channels Pause I/O Restore the default set
Configuration 83 Rebooting the Controller This function allows the user to shut down and restart the controller after making certain configuration changes (or hardware changes). A normal shutdown ensures that the writeback cache has been flushed to the disk. CAUTION: Any user accessing an array while the controller is shutting down will lose access and possibly data as well! To shut down and restart the controller: 1. Select Shutdown/Restart from the System Menu and press Enter.
84 Configuration Figure 55: Set Date/Time Menu Screen 3. Select Set Date and press Enter. The Set Date screen should now display (Figure 56). Figure 56: Set Date Screen StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 4. 85 Enter the desired date and press Enter. Enter the date in the following format - MM/DD/YYYY. The system will confirm your request to set the date. 5. Select Yes and press Enter. 6. Press Esc to return to the Configuration Menu. To set the time: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select Set Date/Time and press Enter. The Set Date/Time screen should now display (Figure 55). 3.
86 Configuration Configuring the Host Channels This function allows the user to configure several settings for each host channel independently. Table 6: Host Channel Settings Host Channel Setting Available Modes Enable/Disable Stand-Alone Single Port Do not disable the host channel when in Single Port mode. Stand-Alone Dual Port OK to disable a host channel when planning on shutting down the host on that channel.
Configuration 87 Table 6: Host Channel Settings (cont'd) Host Channel Setting Available Modes Description Controller LUN All The controller has just one LUN that the user can change when configuring the host channels. The user only needs to assign a controller LUN if using the Configuration Application Program Interface (CAPI) to configure the controller over a host channel via SCSI protocol extensions. Refer to section Understanding LUNs and Viewing LUN Information for further information.
88 Configuration Understanding LUNs and Viewing LUN Information The controller supports up to 64 SCSI LUNs numbered 0-63. There are three (3) different types of LUNs: controller, SEP, and partition. The user can view information about each LUN (refer to section "Viewing LUN Information" for further information).
Configuration 89 Viewing LUN Information This function allows the user to view information for each existing LUN. To view LUN information: 1. Select Utilities Menu from the System Menu and press Enter. The Utilities Menu should now display (Figure 45). 2. Select LUN Information and press Enter. The LUN Information screen should now display (Figure 58). Figure 58: LUN Information Screen 3. Press Esc to return to the Utilities Menu. Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
90 Configuration Configuring the SCSI Channels This function allows the user to change the configuration options for each SCSI channel. Bus Speed - The maximum speed the controller will attempt to negotiate. 160MB/sec - Default setting (DT clocking) 80MB/sec - (ST clocking) 40MB/sec - (ST clocking) NOTE: To avoid disk channel problems, make sure the bus speed matches the speed of the drives installed.
Configuration 91 Figure 59: Channel Configuration Screen 3. Select the desired channel and press Enter. The Bus Speed screen will display (Figure 60). The current setting is marked with an * next to it. Figure 60: Bus Speed Screen 4. Select the desired setting and press Enter. The Disable Domain Validation screen will display (Figure 61). Tthe current setting is marked with an * next to it. Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
92 Configuration Figure 61: Disable Domain Validation Screen 5. Select the desired option and press Enter. If not in Active-Active mode, the Initiator ID screen will display the current initiator ID (Figure 62). NOTE: Controller disk channel SCSI ID is factory set to ID7. StorCase does not recommend changing the factory default Initiator ID(s).
Configuration 6. 93 Select the desired Initiator ID and press Enter. StorCase does not recommend changing the factory default Initiator ID(s). If in Active-Active mode, the Initiator ID screen will not appear. The system will confirm the new Initiator ID. 7. Select Yes and press Enter. 8. Press Esc to return to the Configuration Menu. Working with the Operating Modes NOTES: Default operating mode for the Dual RAID Controller Module unit is ActivePassive.
94 Configuration Understanding the Active-Active Configuration Controller A - The primary controller. The controller's identity is displayed continuously at the bottom of the Disk Array Administrator screen. Controller B - The secondary controller. The controller's identity is displayed continuously at the bottom of the Disk Array Administrator screen. Failback - The act of returning ownership of controller resources from a surviving controller to a previously failed (but now active) controller.
Configuration 95 Active-Active Operation Scenarios Dual Boot - When both controllers boot at the same time, they exchange information related to their current configuration and the ownership of resources. The time and date of Controller B is synchronized with that of Controller A. Add Array - When a controller adds an array, that controller is owner of the array (as well as any dedicated spare drives). Arrays and dedicated spares are not visible to the other controller when both controllers are online.
96 Configuration Table 7: Operating Mode Settings Configuration Host Channel Setting Description Single RAID Module Unit Stand-Alone Single Port This option allows the controller to operate with one host port and three or four disk channels. Select Stand-Alone Single Port mode if you do not want to run in dual port mode, or your host operating system does not support it.
Configuration 97 To change the operating mode: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select Option Configuration and press Enter. The Option Configuration screen should now display (Figure 32). 3. Select Operating Mode from the System Menu and press Enter. The Operating Mode screen should now display. 4. Select the desired option and press Enter. Refer to Table 7 for the list of options and their descriptions.
98 Configuration Managing the Other Controller The following can be done while in Active-Active mode: Display information about the other controller. Shut down the other controller. Shut down both controllers. Change array ownership. Kill the other controller. Unkill the other controller. Displaying Information about the Other Controller This function allows the user to display information about the other controller (if the other controller is up).
Configuration 99 Figure 63: Other Controller Menu Screen 2. Select Other Information and press Enter. The Other Information screen should now display (Figure 64). Figure 64: Other Information Screen 3. Press Esc to return to the Other Controller Menu screen. Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
100 Configuration Shutting Down the Other Controller This functions allows the user to gracefully shut down the other controller. This option should always be used in preparation for power down or for replacement of the other controller . To shut down the other controller: 1. Select Other Controller Menu from the System Menu and press Enter. The Other Controller Menu is only available if the system is configured to run in ActiveActive Mode. The Other Controller Menu should now display (Figure 63). 2.
Configuration 101 Killing the Other Controller NOTE: The Kill Other option should only be used a last resort to regain control of the other controller. Use of Kill Other may disrupt host I/O activity. If the other controller needs to be taken offline, always try a local shutdown or use the Shutdown Other option first. This function allows the user to force (nongracefully) the other controller offline (causing the other controller to assume control of its arrays). To kill the other controller: 1.
102 Configuration The Other Controller Menu is only available if the system is configured to run in ActiveActive Mode. The Other Controller Menu should now display (Figure 63). 2. Select Unkill Other and press Enter. The system will now confirm the change. 3. Select Yes and press Enter to make the change. 4. Press Esc to return to the Other Controller Menu screen. The other controller should now shut down.
Configuration 103 Changing the Alarm Mute Setting This function allows the user to enable/disable the audible alarm. Changing the mute setting allows the user to turn OFF the alarm (the alarm should be turned back ON once the problem is resolved). Alarm conditions will trigger event messages that display in the Disk Array Administrator Utility and in the event log (refer to section "Displaying the Event Log" for further information).
104 Configuration Figure 65: Alarm Mute Screen 3. Select the desired option and press Enter. Locking the Cache Setting This function allows the user to prevent host systems from using SCSI mode select commands to change the controller's write-back cache setting. Some operating systems disable write cache, resulting in degraded performance. If cache lock is enabled, the host cannot modify the cache setting (default setting is disabled). To lock the cache setting: 1.
Configuration 105 Figure 66: Cache Lock Screen 4. Select the desired option and press Enter. Configuring the Battery This function allows the user to configure two (2) settings for the battery. Enable/disable the battery (default is battery enabled). Set the battery age/disable battery life monitor. Enabling/Disabling the Battery This function allows the user to run the controller without a battery. However, if there is no battery in the controller, the controller's alarm will sound.
106 Configuration If battery is disabled, the controller WILL NOT give any warnings, nor will it disable the writeback cache. Once battery settings are changed, the controller will need to be rebooted for any changes to take effect. To change the battery setting: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select Option Configuration and press Enter. The Option Configuration screen should now display (Figure 32). 3.
Configuration 107 Changing the Battery Age and Disabling the Battery Life Monitor The controller monitors the life of the controller battery and creates a warning event when the battery nears the end of its life (controller batteries typically last about 3 years). The event will display (each time the controller is rebooted) until the battery is replaced and the battery age reset. When replacing the battery, the battery age must be reset for the battery life monitor to work properly.
108 Configuration Figure 68: Flash Utility Screen 5. Press 6 to select the Utility Menu. Th Flash Utility Menu should now display (Figure 69). Figure 69: Flash Utility Menu Screen 6. Press 4 to select the Battery Life Monitor Options. The Battery Life Monitor Menu screen should now display (Figure 70). StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 109 Figure 70: Flash Battery Life Monitor Menu Screen 7. A. Press the corresponding letter to select the desired option: New Battery Installed: Use this option when installing a new battery to reset the battery age to zero. The system will confirm your request to reset the battery age. Press Y and then Enter to confirm. B. Set Battery Age: C. Use this option when installing a used battery to reset the battery age to a specific age (in months).
110 Configuration Changing the Utility Priority This function allows the user to change the priority at which all utilities (Verify, Reconstruct, Expand, Initialize, etc.) run when there are active I/O operations competing for the controller's CPU. The choices are: High (Default) Medium Low For example, select High if the highest priority is to get the array back to a fully fault-tolerant state. This causes heavy I/O with the host to be slower than normal.
Configuration 111 Rescanning All Channels This function allows the user to scan all disk channels for new or removed disk drives. The rescan will temporarily pause all I/O processes (normal operation will resume once rescan is complete). If using an InfoStation with the SAF-TE Board installed, the controller will perform a rescan automatically.
112 2. Configuration Select Hot Swap Pause and press Enter. The Bus Paused screen should now display (Figure 72). Figure 72: Bus Paused Screen 3. Press Esc to resume SCSI bus activity (once drive has been replaced). CAUTION: DO NOT stay in the Hot Swap Pause mode for too long, an operating system time-out may occur (the time will vary according to the operating system)! StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 113 Restoring Default Settings This function allows the user to restore all of the controller's default settings. This is useful when the controller is not working properly and the cause cannot be determined. The user can then change the settings critical to the configuration. NOTE: Restoring default settings does not change any LUN zoning settings. The zoning information is stored on the array as metadata and is saved. To restore the default settings: 1.
114 Configuration Managing Disk Drives and Enclosures The Disk Array Administrator Utility allows the user to control a variety of functions related to disk drives and the SAF-TE Board (if any) connected to the controller.
Configuration 115 Displaying All Drives This function allows the user to display a list of all drives connected to the controller, including: Channel SCSI target ID Size Manufacturer Model number Drive firmware revision If any of the drives are members of an array, the following information may also display: Utility running (Expand, Verify, etc.
116 Configuration Figure 73: Display Drives Screen 2. Press Esc to return to the System Menu. Viewing Drive Status This function allows the user to view the status of the drives in an array, including: Drive number (the drive's sequential position in the controller's drive list) Drive status (whether the drive is up or down) Channel number (back-end disk bus number) Target ID Size (size of the drive in MB) Status - If a member of an array, this will display the array name and member number.
Configuration 117 To view drive status: 1. Select Array Menu from the System Menu and press Enter. The Select Array screen will display, along with a list of existing arrays (Figure 19). 2. Select the desired array and press Enter. 3. Select Drive Status and press Enter. The Array Menu should now display (Figure 20). The Drive Status screen should now display, showing all drives that are members of the array as well as those assigned as dedicated spares (Figure 74).
118 Configuration Clearing Metadata from a Drive All of the member drives in an array contain metadata in the first sectors of the drive. The controller uses the metadata to identify array members after restarting or changing controllers. This function allows the user to clear the metadata from a drive. After the metadata is cleared, the drive can be used again in an array or as a spare. To clear metadata from a drive: 1. Select Utilities Menu from the System Menu and press Enter.
Configuration 119 Enabling/Disabling Write-back Cache The user can control the write-back cache setting for all the drives at once. Changes take effect after the next rescan or reboot. Write-back cache can be set to ENABLE, DISABLE, or DON'T MODIFY (the controller will not change any drive's write-back cache setting). Default setting is DISABLE. Typically, it is not necessary to enable the write-back cache on the drives if they are part of an array.
120 3. Configuration Select Write-back Cache and press Enter. The Write-Back Cache screen will display (Figure 77). The current setting is marked with an * next to it. Figure 77: Write-Back Cache Screen 4. Select the desired option and press Enter. 5. Reboot or rescan to make any changes take effect (refer to sections "Rebooting the Controller" and/or "Rescanning All Channels" for further information). StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Configuration 121 Displaying Disk Cache Status This function allows the user to display the cache status of each disk drive. Any disk drives with write-back cache enabled should be connected to a UPS in case of power loss. If the drives are not on a UPS and power is lost during disk writes, the array will lose any data in the disk's write-back cache. To display disk cache status: 1. Select Utilities Menu from the System Menu and press Enter. The Utilities Menu should now display (Figure 45). 2.
122 Configuration Enabling/Disabling SMART Changes This function allows the user to enable/disable the ability to change the Self-Monitoring, Analysis, and Reporting Technology (SMART) settings for all drives connected to the controller. The SMART settings can be set to ENABLE, DISABLE, or DON'T MODIFY (the controller will not change any drive's SMART settings). Default setting is DON'T MODIFY. NOTE: Typically, SMART is disabled by the drive manufacturer (default).
Configuration 123 4. Select the desired option and press Enter. 5. Reboot or rescan to make any changes take effect (refer to sections "Rebooting the Controller" and/or "Rescanning All Channels" for further information). Blinking a Drive LED This function allows the user to blink the LED on a specific drive. The drive continues blinking its LED until the user does one of the following: Press Esc before the Disk Array Administrator Utility times out. Repeat the blink LED command.
124 Configuration Taking Down a Drive CAUTION: This function is ONLY for testing arrays and should NOT be used in normal operation! The Down Drive function allows the user to set the status of a drive (in a fault-tolerant) drive to DOWN. This forces the controller to remove it from the array and mark the array as critical (only one drive at a time can be DOWN). The user must use Rescan to make the drive display again (refer to section "Rescanning All Channels" for further information).
Configuration 125 Testing a Drive This function allows the user to issue a Test Unit Ready (TUR) command to a specific disk drive. NOTE: A drive can still respond, even if it is not functioning properly. To test a drive: 1. Select Utilities Menu from the System Menu and press Enter. The Utilities Menu should now display (Figure 45). 2. Select Drive Utilities Menu and press Enter. The Drive Utilities Menu should now display (Figure 75). 3. Select Test Unit Ready and press Enter.
126 Configuration - Slot update status - Enclosure update status Changing the SEP LUN This function allows the user to change the SAF-TE Board LUN. SEP LUNs can be set to a value from 0-63 or NONE (if NONE, SAF-TE Board cannot be accessed by a LUN). To change the SAF-TE Board LUN: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select SEP Configuration and press Enter.
Configuration 127 Figure 81: SEP LUNs Screen 4. Select the desired LUN and press Enter. The SEP LUN screen should now display (Figure 82). Figure 82: SEP LUN Screen 5. Select the desired option (NONE) or number (0-63). The system will confirm your request to change the LUN. 6. Select Yes and press Enter. Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
128 Configuration Changing the Additional SAF-TE Board Settings The user can change four (4) additional settings: Polling Interval - The interval (in seconds) that the controller polls the SAF-TE Board for status changes (default is 5 seconds). Temperature Sensor Status - This controls whether the controller's onboard temperature sensor provides temperature information to the host along with the enclosure's temperature detected by the SAF-TE Board.
Configuration 129 Figure 83: Poll Rate Screen 4. Enter the desired poll rate (in seconds) and press Enter. The Temperature screen should now display (Figure 84). The current setting is marked with an * next to it. Figure 84: Temperature Screen 5. Select the desired option and press Enter. The Slot Flags screen should now display (Figure 85). The current setting is marked with an * next to it. Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
130 Configuration Figure 85: Slot Flags Screen 6. Select the desired option and press Enter. The Global Flags screen should now display (Figure 86). The current setting is marked with an * next to it. Figure 86: Global Flags Screen 7. Select the desired option and press Enter. The system will confirm your request to make the desired changes. 8. Select Yes and press Enter. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Appendix A - Specifications/Dimensions 131 APPENDICES Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
132 Appendix A - Specifications/Dimensions Appendix A - Specifications/Dimensions Physical Specifications Height 2.47" (62.7mm) Width 10.20" (259.1mm) Depth 10.45" (265.4mm) Weight 11.0 lbs (5.0kg) IFSII_DR13 InfoStation Dual RAID Controller Module Interface Host: Device: Data Transfer Rate: SCSI Protocol: Two (2) Ultra160 SCSI Channels Two (2) Ultra160 SCSI Channels 160MB/sec LVD/S.E. Ultra160 RAID Features RAID Level Support: Max. Devices Supported: Max. # of Arrays: Max.
Appendix A - Specifications/Dimensions 133 9.11 (231.4mm) 2.43 (61.7mm) 2.47 (62.7mm) 10.20 (259.1mm) 10.45 (265.4mm) IFSII_DR12 Figure A-1: Dual RAID Controller Module Physical Dimensions (Dimensions are for reference only) Dual RAID Module User's Guide - Rev. A03 StorCase Technology, Inc.
134 Appendix B - Array Basics Appendix B - Array Basics The InfoStation Dual RAID Controller Modules 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 135 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).
136 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 137 Comparing RAID Levels Table B-1 illustrates the differences between the various RAID levels.
138 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
Appendix C - Troubleshooting 139 Appendix C - Troubleshooting StorCase Technical Support For assistance configuring and using this StorCase product, contact StorCase technical support at (888) 435-5460. 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.
140 Appendix C - Troubleshooting Screen is updated, but won't respond to keystrokes. Disable hardware flow control on the terminal or terminal emulator. The RAID Controller Module supports XON/XOFF flow control and works properly in most cases with no flow control. Screen looks correct, but clock is not updated. Check to make sure that the InfoStation is still powered on. If using XON/XOFF, press Ctrl-Q. Screen is updated and menus appear correct, but boxes around menus look incorrect.
Appendix C - Troubleshooting 141 To change the backoff percentage: 1. Select Configuration Menu from the System Menu and press Enter. The Configuration Menu should now display (Figure 31). 2. Select Backoff Percent and press Enter. The Backoff Percent screen should now display. 3. Enter the desired backoff percent and press Enter. The percentage is entered as a 3-digit number, using the following format - 00.0% (default is 01.0%).
142 Appendix C - Troubleshooting Device SCSI Channel Problems Not all drives connected to the device channels are displayed during boot, or the RAID Controller Module hangs during display of connected drives and never reaches the Administrator Utility screen. Check the InfoStation to make sure it is properly configured for use with the RAID Controller Module . Check to make sure all the InfoStation drive carriers are properly installed. Check termination and ID assignment.
Appendix C - Troubleshooting 143 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.
144 Appendix C - Troubleshooting An Active-Active controller pair hangs during bootup drive scan (typically after CT_Init on the RS-232 display). Verify that all SCSI channels are connected, cabled, and terminated porperly. Verify that the controllers are set to their correct configuration. An Active-Active controller pair hangs the host system during normal operation or after failing over. Verify that all SCSI channels are connected, cabled, and terminated properly.
Appendix C - Troubleshooting 145 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.
146 Appendix C - Troubleshooting Controller Problems Controller's Status 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 Disk Array Administrator Utility for any outstanding events. Controller's Status LED is on but there is no RS-232 display. Check that the RS-232 cable is the correct type (straight-through).
Appendix C - Troubleshooting 147 Replacing a Bad Controller When in Active-Active Mode If one controller detects that the other has a problem, it will kill it and output an appropriate event. If it is determined that the controller has a permanent failure, then it must be replaced. Replace the bad controller and load the replacement controller with the same firmware level as the surviving controller. After the firmware load completes, the new controller will complete its boot and go online.
148 Appendix C - Troubleshooting 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.
Appendix C - Troubleshooting 149 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.
150 Appendix C - Troubleshooting 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.
Appendix C - Troubleshooting Table C-4: 151 Sense Key Codes and Descriptions Sense Key Description 0h No sense 1h Recovered error 2h Not ready 3h Medium error 4h Hardware error 5h Illegal request 6h Unit attention 7h Data protect 8h Blank check 9h Vendor-specific Ah Copy aborted Bh Aborted command Ch Obsolete Dh Volume overflow Eh Miscompare Fh Reserved IFS_64 Table C-5: ASC/ASCQ Codes and Descriptions ASC ASCQ Description 0C 02 Write error - auto reallocation fa
152 Appendix C - Troubleshooting Disk Channel Errors Disk channel errors are similar to disk-detected errors, except they are detected by the controller. Some disk channel errors are displayed as text strings, others are displayed as hexadecimal codes. Most disk channel errors are informational, since the controller will issue retries to correct any problem. Errors that cannot be corrected with retries will result in a critical event describing the affected disk array.
Appendix C - Troubleshooting Table C-6: Error Code 153 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 underrun h
154 Appendix D- Administrator Utility Menu Tree 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 Display Drive
Appendix D - Administrator Utility Menu Tree 155 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 SEP # SEP LUN # 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 Disk Configuration Writeback Cache SMART
156 Appendix D- Administrator Utility Menu Tree This Page Left Blank Intentionally. StorCase Technology, Inc. Dual RAID Module User's Guide - Rev.
Reader's Comments 157 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.
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