Sharing volumes with continuous access synchronous – HP XP Racks User Manual
Page 27
FS pair status
BC task (RAID Manager command)
PSUE
RCPY
COPY
2
PSUS, PFUS
PAIR, PFUL
COPY
1
YES
YES
YES
YES
YES
YES
Delete a pair (pairsplit -S)
1.
“COPY” status during an initial copy.
2.
“COPY” status during resynchronization.
3.
The snapshot data must be consistent with P-VOL data and ready to use in the BC task.
For more information about ensuring the snapshot data is consistent with P-VOL data, see
“Workflow for ensuring snapshot
data is consistent with P-VOL data” (page 51)
.
Pair tasks with Fast Snap primary volume shared with Business Copy/Snapshot
secondary volume
The following table shows the pair tasks that are supported when you share the BC/SS S-VOL with
the FS P-VOL.
FS pair status
BC task (RAID Manager command)
PSUE
RCPY
COPY
2
PSUS, PFUS
PAIR, PFUL
COPY
1
NO
NO
NO
NO
NO
NO
Create a pair (Paircreate)
NO
NO
NO
NO
NO
NO
Create and split a pair (Paircreate -split)
YES
NO
YES
YES
YES
1
YES
Split a pair (pairsplit)
YES
NO
YES
YES
YES
1
YES
Resynchronize a pair (pairresync)
YES
NO
YES
YES
YES
3
YES
Reverse Copy a pair (pairresync -restore)
NO
NO
NO
NO
NO
NO
Quick Restore a pair
4
(pairresync -restore)
YES
NO
YES
YES
YES
YES
Suspend a pair task (pairsplit -E)
YES
YES
YES
YES
YES
YES
Delete a pair (pairsplit -S)
1.
“COPY” status during an initial copy.
2.
“COPY” status during resynchronization.
3.
The snapshot data must be consistent with P-VOL data and ready to use in the BC task.
For more information about ensuring the snapshot data is consistent with P-VOL data, see
“Workflow for ensuring snapshot
data is consistent with P-VOL data” (page 51)
.
4.
You can use the FS P-VOL data when the host accesses the FS S-VOL. You cannot Quick Resync to exchange the BC P-VOL
and S-VOLs.
Sharing volumes with Continuous Access Synchronous
You can share both BC P-VOLs and S-VOLs with Cnt Ac-S P-VOLs and S-VOLs. However, you cannot
share only BC S-VOLs with Cnt Ac-S S-VOLs.
The write operation on the Cnt Ac-S P-VOL takes more time when you share a BC P-VOL with a
Cnt Ac-S S-VOL. This is especially true when the BC pair is in the process of being Quick Split
(“PSUS(SP)/PSUS” status) because the required BC pair copying time.
Sharing volumes with Continuous Access Synchronous
27