HP XP P9500 Storage User Manual
Page 27
In these configurations, BC pair operations are dependent on the pair status of the Continuous
Access Journal local-intermediate pair and the local-remote pair. The following tables show the
operations that can be performed.
Table 4 BC operations — P-VOL shared with Cnt Ac-J P-VOL
BC operations
Cnt Ac-J
intermed.-remote
pair status
Cnt Ac-J
local-intermed.
pair status
Resync -- Quick
Restore
Resync --
Reverse Copy,
Create, Split, Suspend, Delete,
Resync--Normal Copy, Quick Resync
NO
NO
YES
PAIR or COPY
PAIR, COPY
*
,
and PSUS/SSWS
NO
NO
YES
PSUS/SSWS
PAIR or COPY
NO
YES
YES
PSUS/SSWS
PSUS/SSWS
* When status for both Cnt Ac-J pairs is COPY, no BC operation is possible.
Table 5 BC operations — S-VOL shared with Cnt Ac-J P-VOL
BC operations
Cnt Ac-J
intermed.-remote
pair status
Cnt Ac-J
local-intermed.
pair status
Resync
Suspend,
Delete
Split
Create
Quick Restore
Normal Copy, Quick
Resync, Reverse Copy
NO
NO
YES
NO
NO
PAIR or COPY
*
PAIR, COPY
*
, or
PSUS/SSWS
NO
NO
YES
NO
NO
PSUS/SSWS
PAIR or COPY
NO
YES
YES
YES
NO
PSUS/SSWS
PSUS/SSWS
* When status for both Cnt Ac-J pairs is COPY, no BC operation is possible.
Table 6 BC operations — P-VOL shared with Cnt Ac-J S-VOL (intermediate or remote site)
BC operations
Cnt Ac-J
*
pair status
Resync -- Reverse Copy,
Quick Restore
Create, Split, Suspend, Delete,
Resync--Normal Copy, Quick Resync
NO
YES
PAIR or COPY
YES
YES
PSUS/SSWS
* Note the following:
•
If the BC P-VOL is shared with the intermediate site’s Cnt Ac-J S-VOL, then check Cnt Ac-J status for the local-intermediate pair.
•
If the BC P-VOL is shared with the remote site’s Cnt Ac-J S-VOL, then check Cnt Ac-J status for the local-remote pair.
Sharing volumes in 3-Cnt Ac-J DC delta resync (multi-target) configuration
The multi-target delta resync configuration with shared Business Copy volumes is shown below.
BC primary volumes can be shared with the delta resync P-VOL and S-VOL.
Figure 6 BC volumes in a delta resync (multi-target) configuration
When a delta resync pair is part of the 3 DC multi-target configuration, supported operations for
BC pairs related to the non-delta resync Cnt Ac-J pairs are the same as described in
.
Continuous Access Journal
27