Spare Disks; Mds Volume Showing Space Allocations - Oracle Video server Manual

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Figure 2–6 MDS Volume Showing Space Allocations
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B 2
B 6
C 3
A 1
B 3
B 7
C 4
A 2
B 4
C 1
C 5
B 1
@@ PP QQ
B 5
C 2
= table of contents
A1 = first RAID stripe of file A
A2 = second RAID stripe of file A
B1 = first RAID stripe of file B
Empty = unused portion of allocated RAID stripe
Spare Disks A spare disk is a designated empty disk in a volume onto which
data from a failed disk can be rebuilt. A spare disk is not part of a RAID set. On a
video server computer that does not support hot-swapping disks (replacing disks
while the computer is online), a volume must contain a spare disk to support
rebuilding data while delivering video. Without a spare disk the OVS cannot
deliver video while the failed disk is replaced and rebuilt. Spare disks are
unnecessary on video server computers that support hot-swapping disks.
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QQQ PPP QQQ PPP
B 2
B 6
C 3
A 1
B 3
B 7
C 4
A 2
B 4
C 1
C 5
B 1
B 5
C 2
Oracle Video Server (OVS)
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B 2 B 2
B 6 B 6
C 3 C 3
A 1 A 1
B 3 B 3
E m p t y E m p t y
C 4 C 4
E m p t y E m p t y
B 4 B 4
C 1 C 1
E m p t y
C 5
B 1 B 1
B 5 B 5
C 2 C 2
System Architecture 2-11