HP XP Racks - Manual (Page 39)

Cache Residency
The volumes which set the Cache Residency can be assigned as the Continuous Access Synchronous
pair. You can perform Cache Residency operations on Cnt Ac-S P-VOLs and S-VOLs. For more
information, see the HP XP7 Performance for Open and Mainframe Systems User Guide.
Data Retention
You can create a Cnt Ac-S pair using volumes that have been assigned the access attribute by the
Data Retention (DRU). However, you cannot specify a volume with the "S-VOL Disable" attribute
as a Cnt Ac-S S-VOL.
The following table shows whether a DRU volume with the specified access attribute can be used
as a Cnt Ac-S P-VOL or S-VOL.
Availability of Cnt Ac-S P-VOL or S-VOL DRU access attribute
S-VOL P-VOL Read/Write
Yes Yes
Yes Yes Read Only
Yes Yes Protect
No Yes S-VOL Disable
No Yes Read Only and S-VOL Disable
No Yes Protect and S-VOL Disable
The following tables show Cnt Ac-S volumes and status with Data Retention operations that can
be performed using Remote Web Console.
Data Ret operation PAIR
status
Cnt Ac-S
Volume
Referring
access
attribute
Changing access attribute
S-VOL
Disable
Protect Read Only Read/Write
Yes Yes Yes Yes Yes SMPL P-VOL
Yes Yes Yes Yes Yes COPY
Yes Yes Yes Yes Yes PAIR
Yes Yes Yes Yes Yes PSUS
Yes Yes Yes Yes Yes PSUE
Yes Yes Yes Yes Yes SMPL S-VOL
Yes No No No No COPY
Yes No No No No PAIR
Yes Yes Yes Yes Yes PSUS
Yes Yes Yes Yes Yes PSUE
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