Figure 19. Degraded Raid 5 Array Drive When Not In Use - 3Ware 7000-2 - Escalade RAID Controller User Manual

3ware Escalade ATA RAID Controller User 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 19). 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 19. 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
1 Reboot the system and enter the Disk Array Configuration
Utility.
60
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
$
Previous/Next
Esc
512 M
1.0GB
512 M
512 M
512 M
Maintain Array
Toggle Hot Spare Enter
Cancel F8
DEGRADED
Not in Use
Rebuild Array
Select/Deselect
Done
www.3ware.com