HP XP20000XP24000 Disk Array - Manual (Page 20)

Backup differential data
Restore differential data
P-VOL
S-VOL
（ V-VOL）
（ V-VOL）
Figure 3 Using XP Thin Provisioning and Business Copy
When you use both XP Thin Provisioning and Business Copy, you can copy V-VOLs.
The following table shows XP Thin Provisioning and Business Copy volume combinations.
Table 6 XP Thin Provisioning and Business Copy Volume Combinations
Business Copy P-VOL Business Copy S-VOL Explanation
XP Thin Provisioning V-VOLs XP Thin Provisioning V-VOLs
You can use this combination,
but you cannot resynchronize the
pair by performing Quick Restore
operations.
XP Thin Provisioning V-VOLs Normal volumes The same as above.
Normal volumes
Note: Normal volumes are internal
volumes and external volumes.
External volumes are mapped to
internal volumes by External Storage
and exist in external storage systems.
In the current microcode version,
you cannot use external volumes
in pools. For details on external
volumes, see HP StorageWorks
XP24000 External Storage Software
User’s Guide.
XP Thin Provisioning V-VOLs
The same as above.
Since this combination consumes the
same amount of pool capacity as
the normal volume (that is, P-VOL)
capacity, this combination is not
recommended.
Note* : You cannot specify an XP Thin Provisioning pool-VOL as a Business Copy P-VOL or S-VOL.
Disk/Cache Partition
You can assign V-VOLs and pool-VOLs to Disk/Cache Partition SLPRs and CLPRs with the following
restrictions:
• All pool VOLs in a pool must be allocated to the same CLPR.
• HP recommends that V-VOLs and the pool associated with the V-VOLs be allocated to the same
CLPR.
Note : A CLPR is allocated to an SLPR. Therefore, V-VOLs and pools that are allocated to the same CLPR
are also allocated to the same SLPR.
For more information, see HP StorageWorks XP24000 Disk/Cache Partition User's Guide.
XP Snapshot
When you use both XP Thin Provisioning and XP Snapshot in a storage system, be careful of the following
points:
• You cannot use pools for XP Thin Provisioning as pools for XP Snapshot, and vice versa.
20 About XP Thin Provisioning Operations