3ware Escalade ATA RAID Controller Installation Guide

3ware Disk Array Configuration

Available Drives:

 

Disk Arrays:

 

*Array Unit

0 - 4 drive 64K RAID 0

120.0GB

Port 0

-

QUANTUM FIREBALLP LM30

30.0GB

Port 1

-

QUANTUM FIREBALLP LM30

30.0GB

Port 2

-

QUANTUM FIREBALLP LM30

30.0GB

Port 3

-

QUANTUM FIREBALLP LM30

30.0GB

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 11. Delete Disk Array Display

Navigate to the Delete Array button and hit Enter to bring up the Delete Disk Array display. Check that the correct drives are listed. Select the OK key to confirm deleting the array or Cancel to reject it. Recall that the array is not actually deleted and no data will be overwritten until you have finished making all your changes and selected the F8 key.

How to maintain or verify a disk array

The Maintain Disk Array (see Figure 12) shows the current disk array configuration that you have selected. The array’s Write Cache State can be changed. Refer to Select write cache proper- ties paragraph in the Creating a disk array section. Verify Array can be specified as no or yes. The default is no. Yes launches a fore- ground process that checks the data integrity of a fault tolerant

3ware Disk Array Configuration Utility

array. If the verify array process determines that the mirrored drives are not identical or the parity is not correct, the array is degraded and the rebuild process is launched.

Maintain Disk Array

The array listed below can have its write cache state changed. Verify checks the data integrity of a fault tolerant array.

Array Unit 2 - 2 drive Mirror

 

30.0GB

 

Port 2

- QUANTUM FIREBALLP LM30

30.0GB

 

Port 3

- QUANTUM FIREBALLP LM30

30.0GB

 

Array's Write Cache State: enabled

 

 

 

Verify Array:

no

 

 

 

 

 

 

 

OK

 

Cancel

 

Alt-F1 Help

Previous/Next

Enter Change Value

Esc Cancel

Figure 12. Maintain Disk Array Display

Note: Fault tolerant arrays can not be verified until after they are initialized. For RAID 1 and 10 arrays the initial verify must first be done in 3DM, otherwise the initialization will not be done.

Rebuilding a mirrored disk array

Escalade ATA RAID Controllers allow you to create fault tolerant disk arrays by selecting a mirrored RAID 1 or RAID 10 array. These disk arrays store identical data on two or more drives to pro- tect against drive failure. If one or more of the drives of a mirrored

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IBM 8000 Series, 7000 Series manual How to maintain or verify a disk array, Rebuilding a mirrored disk array