Lun Expansion; Virtual Lvi/Lun; Cache Residency - HP StorageWorks P9000 User Manual

Table 1 1 Pair status reporting (continued)
Number of Cnt
Ac-S pairs
0
1
1
1
The following table indicates when data is current on a shared Continuous Access
Synchronous/Business Copy volume based on the pair statuses.
Table 12 Data currency of a shared volume
Continuous
Access
Synchronous
pair status
COPY
PAIR
PSUS (Delete
pair to
RCU)/PSUE
(pair
suspended-error)

LUN Expansion

LUSE volumes can be assigned to Continuous Access Synchronous pairs, with the following
restrictions:
The P-VOL and S-VOL must have the same LU type and the same number of LDEVs.
If you need to perform LUSE operations on an existing Continuous Access Synchronous P-VOL
or S-VOL, you must release the pair first to return the volume to SMPL status.
If you allocate a LUSE volume that consists of LDEVs set across more than one CU to the
Continuous Access Synchronous pair, you must select CU Free for an RCU.
For further information on LUN Expansion (LUSE), see the HP StorageWorks P9000 Provisioning
for Open Systems User Guide.

Virtual LVI/LUN

to Continuous Access Synchronous pairs, with the following restrictions:
The S-VOL must have the same capacity as the P-VOL.
When performing Virtual LVI/LUN operations on an existing Continuous Access Synchronous
P-VOL or S-VOL, you must release the pair first to return the volume to SMPL status.
For more information on Virtual LVI/LUN, see the HP StorageWorks P9000 Provisioning for Open
Systems User Guide.

Cache Residency

Cache Residency volumes can be assigned to Continuous Access Synchronous pairs, and Cache
Residency operations can be performed on Continuous Access Synchronous P-VOLs and S-VOLs.
For more information, see the HP StorageWorks P9000 Cache Manager User Guide.
Number of BC S-VOLs Pair status
2 or more Business Copy pair status for the S-VOL with lowest LDEV ID
0 Continuous Access Synchronous pair status
1 Continuous Access Synchronous pair status
2 or more Continuous Access Synchronous pair status
Business Copy Pair status
COPY (PD) PAIR
Not Current Not Current
Not Current Not Current
Not Current Current
COPY (SP) PSUS
Not Current Current
Not Current Current
Current Current
COPY PSUE
(RS/RS-R)
Not Current Not Current
Not Current Not Current
Current Not Current
LUN Expansion 33