Rebuilding A Raid 5 Disk Array; Figure 17. Degraded Raid 5 Array Drive When Not In Use - 3Ware 3W-6800 User Manual

Rebuilding a RAID 5 disk array

Escalade Storage Switches allow you to create fault tolerant RAID
5 disk arrays. These disk arrays achieve fault tolerance by using a
simple (exclusive OR) function to generate the parity data 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 (see
Figure 17). When running in Degraded mode, the missing data is
reconstructed from all non-degraded drives.
Available Drives:
Port 0 - QUANTUM FIREBALLP KX27.3
Disk Arrays:
Array Unit 1 - 3 drive
Port 1 - IBM-DTLA-387815
Port 2 - IBM-DTLA-387815
Port 3 - IBM-DTLA-387815
Create Array
Alt-F1 Help
Restore Initial Values
F6

Figure 17. 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.)
www.3ware.com
3 w a r e D i s k A r r a y C o n f i g u r a t i o n
64K RAID 5
Delete Array
$ Toggle Hot Spare
Previous/Next
Esc
3ware Disk Array Configuration Utility
512 M
1.0GB DEGRADED
512 M
512 M Not in Use
512 M
Maintain Array
Enter
Cancel F8 Done
Rebuild Array
Select/Deselect
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