IBM 8000 Series, 7000 Series manual Degraded RAID 5 Array Drive When Not in Use

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3ware Escalade ATA RAID Controller Installation Guide

that is distributed on all drives. If one of the drives is removed, unplugged or fails on read or write requests, the array is marked as DEGRADED and the drive is marked as Not In Use or is not dis- played if no longer available (see Figure 15). When running in Degraded mode, the missing data is reconstructed from all non- degraded drives.

 

 

 

3ware Disk

Array Configuration

Available Drives:

 

 

 

Port 0

- QUANTUM FIREBALLP KX27.3

512 M

Disk Arrays:

 

 

 

Array Unit

1 - 3 drive

64K RAID 5

1.0GB

DEGRADED

Port

1

-

IBM-DTLA-387815

512

M

Port

2

-

IBM-DTLA-387815

512

M Not in Use

Port

3

-

IBM-DTLA-387815

512

M

Create Array Delete Array Maintain Array Rebuild Array

Alt-F1 Help

Previous/Next $ Toggle Hot Spare EnterSelect/Deselect

F6 Restore Initial Values Esc Cancel

F8 Done

Figure 15. Degraded RAID 5 Array Drive When Not in Use

As in the case of RAID 1 and 10 arrays RAID 5 arrays allow you to read and write data from a degraded disk array, but the array will not be fault tolerant until it is rebuilt using the Rebuild feature. (Refer to the 3ware Disk Array Configuration Utility or 3DM Disk Management Utility chapters for more information.)

Rebuilding a mirrored or RAID 5 array with no hot spare

1Reboot the system and enter the Disk Array Configuration Utility.

3ware Disk Array Configuration Utility

2If your mirrored or RAID 5 array has a Not in Use member drive, the drive may still be usable. Try rebuilding with the Not in Use drive intact. Simply select the array and then the Rebuild button.

3Confirm that you selected the correct array by hitting OK in the Rebuild confirmation display.

4Select F8 to exit the Disk Array Configuration Utility. The array will begin rebuilding after completion of the operating sys- tem load.

5If the rebuild fails and you have no Available Drives, you must power down the system and replace the failed or Not In Use drive. Power on the system and enter the Disk Array Configu- ration Utility.

6Select an available drive to replace the faulted drive in the array by navigating the cursor over the available drive and hitting Enter (see Figure 16). An asterisk in the left most column indi- cates the drive is selected.

7Navigate to the degraded array and press Enter to select it.

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Contents EscaladeTM Copyright Contents Hardware installation List of Figures 3ware Escalade ATA RAID Controller Installation Guide Features Before You BeginPackage Contents Tools Required CBL-P-SATA Parallel to Serial Drive Converter KitMechanical Concerns Hardware Installation To remove an existing Escalade ATA RAID ControllerInstalling a Parallel ATA RAID Controller Install the Escalade ATA RAID Controller in the computerConnect the drives to the interface cables Installing a Serial ATA RAID Controller Tors without bending any pinsUsing native serial ATA drives Check your installation and close the case Check motherboard boot sequenceHot spare and hot swap 3ware Disk Array Configuration UtilityBios Screen 3DM Configure Invoking the 3ware Bios toolExiting the 3ware Bios tool Determining your configuration Disk Array Configuration Main Display, RAID 1 ExampleDisplaying advance details Creating a disk arrayCreate Disk Array Display, RAID 0 Example Single disk. RAID 5 arrays require a minimum of three Modifying a disk array Changing an existing configurationSpecifying a Hot Spare Deleting a disk arrayHow to maintain or verify a disk array Rebuilding a mirrored disk arrayRebuilding a RAID 5 disk array DegradedDegraded RAID 5 Array Drive When Not in Use Rebuild Array Status Display, RAID 1 Example If your system has hot swap carriers Press F8 to start a rebuild with this drive Additional Procedures 3ware Escalade ATA RAID Controller Installation Guide Troubleshooting Problems and Solutions Hardware installation3ware Escalade ATA RAID Controller Installation Guide Appendix a Compliance Conformity Statements Exclusions Appendix B Warranty, Technical Support and ServiceLimited Warranty State Law Provisions Obtaining Warranty Protection3ware Technical Support and Services Sales and ordering information3ware Escalade ATA RAID Controller Installation Guide Index Whql