HP XP P9500 Storage - Manual (Page 27)

BC pair operations are limited according to the ESAM pair status. The following table shows the
pair operations that are allowed.
ESAM pair status BC operation
SSWS PSUS PSUE PAIR COPY
YES YES YES YES YES Create a pair (paircreate)
YES YES YES YES YES Create and split a pair
(paircreate -split)
YES YES YES YES YES Split a pair (pairsplit)
YES YES YES YES YES Resynchronize a pair (pairresync)
YES YES YES NO NO Restore a pair (pairresync -restore)
YES YES YES NO NO Quick Restore a pair
(pairresync -restore)
YES YES YES YES YES Interrupt a pair operation
(pairsplit -E)
YES YES YES YES YES Delete a pair
(pairsplit -S)
NOTE: Write processing to the ESAM P-VOL requires more time generally, but especially when
BC pair status is PSUS(SP), during which copy processing occurs.
For more information on sharing ESAM volumes with BC, see the HP XP P9000 External Storage
Access Manager User Guide.
LUN Manager
LUN Manager operations do not affect BC operations. You can assign volumes that are under
secure ports and/or that are assigned to World Wide Name (WWN) groups and/or LUN groups
to BC pairs. You can also use volumes that are assigned to BC pairs in LUN Manager operations,
such as assignment to WWN groups, and/or LUN groups.
A host cannot access BC S-VOLs except when the pair is split.
Open Volume Management
You can use both LUSE and Virtual LUN volumes as BC volumes.
With LUSE volumes, the P-VOL and S-VOLs must have the same configuration (the same LU capacity
and the same number of LUs).
With Virtual LUN volumes, the P-VOL and S-VOLs must have the same capacity.
Resource Partition
You can specify volumes in a Resource Partition resource group as BC P-VOLs and S-VOLs. However,
ensure the resource group is assigned to one of your user groups. The resource group must be
assigned to a user group for which your user account has privileges.
For more information about Resource Partition, see the HP XP P9000 Provisioning for Open Systems
User Guide
LUN Manager 27