3Ware 3W-6800 User Guide - Page 47

Rebuilding a mirrored disk array - disk manager

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3ware Disk Array Configuration Utility Rebuilding a mirrored disk array Escalade Storage Switches 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 protect against drive failure. If one or more of the drives of a mirrored array 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 15 and Figure 16). You can still 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, described in the 3ware Disk Array Configuration Utility or 3DM Disk Management Utility chapters. 3ware Disk Array Configuration Available Drives: Port 2 - QUANTUM FIREBALLP LM30 Port 3 - QUANTUM FIREBALLP LM30 Disk Arrays: Array Unit 0 - 2 drive Mirror Port 0 - QUANTUM FIREBALLP LM30 Port 1 - QUANTUM FIREBALLP LM30 30.0GB 30.0GB 30.0GB DEGRADED 30.0GB Not in Use 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 15. Degraded RAID 1 Array Drive When Not in Use www.3ware.com 37

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3ware Disk Array Configuration Utility
www.3ware.com
37
Rebuilding a mirrored disk array
Escalade Storage Switches 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 protect
against drive failure. If one or more of the drives of a mirrored array
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
(s
ee Figure 15 and Figure 16).
You can still 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, described in the
3ware Disk Array Configuration Utility
or
3DM Disk Management Utility
chapters.
Figure 15.
Degraded RAID 1 Array Drive When Not in Use
Restore Initial Values
Previous/Next
Toggle Hot Spare
Cancel
Select/Deselect
Done
Alt-F1
F6
Enter
F8
$
Esc
Help
3ware Disk Array Configuration
Create Array
Delete Array
Maintain Array
Rebuild Array
Available Drives:
Port 2 - QUANTUM FIREBALLP LM30
30.0GB
Port 3 - QUANTUM FIREBALLP LM30
30.0GB
Disk Arrays:
Array Unit 0 - 2 drive Mirror
30.0GB
DEGRADED
Port 0 - QUANTUM FIREBALLP LM30
30.0GB
Not in Use
Port 1 - QUANTUM FIREBALLP LM30
30.0GB