HP XP Racks - Manual (Page 23)

3 Sharing Business Copy volumes
You can share BC volumes with other HP software application volumes. This chapter discusses the
requirements, restrictions, and guidelines for sharing volumes.
Sharing volumes with Cache Residency
You can use volumes with Cache Residency settings as BC P-VOLs and S-VOLs. The Cache Residency
settings can affect the performance of restoring pairs using Quick Restore.
For more information about how to avoid performance impact when restoring pairs using Quick
Restore, see
“Workflow for maximizing Quick Restore performance” (page 18) .
Related topics
•
“Reverse resynchronization” (page 53) .
Sharing volumes and Data Retention access attributes
You can share volumes on which you set Data Retention access attributes.
Access attributes and supported Business Copy tasks
You can create BC pairs using volumes on which you set Data Retention access attributes.
NOTE: Performing BC tasks does not change Data Retention access attributes.
The volume access attributes that you have specified for the BC pair determines the BC pair tasks
that you can perform.The pair tasks you can perform are different depending on whether you set
Data Retention Utility access attributes using RWC or RAID Manager.
The following table shows a list of the volume access attributes specified for the BC pair and the
pair tasks that you can perform when using RWC to set access attributes.
BC pair tasks Volume access attributes specified for the BC pair
Delete Resync (Reverse Copy) Create, Split, Suspend, Resync
(Normal Copy) S-VOL P-VOL
YES YES YES Read/Write Read/Write
YES NO YES Read/Write Read Only, Protect, S-VOL
Disable
YES NO NO Read Only, Protect,
S-VOL Disable Read/Write, Read Only,
Protect, S-VOL Disable
The following table shows a list of the volume access attributes specified for the BC pair and the
pair tasks that you can perform when using RAID Manager to set access attributes.
BC pair tasks Volume access attributes specified for the BC pair
Delete Resync (Reverse Copy) Create, Split, Suspend, Resync
(Normal Copy) S-VOL P-VOL
YES YES YES Read/Write, Read
Only, Protect Read/Write, Read Only,
Protect
YES NO YES Read/Write, Read
Only, Protect S-VOL Disable
YES NO NO S-VOL Disable Read/Write, Read Only,
Protect, S-VOL Disable
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