HP XP P9500 Storage - Manual (Page 39)

(3390-A) as the S-VOL is available. However, the swap operation to the reversed combination of
the V-VOL (3390-A) or not-V-VOL (3390-A) as the P-VOL and the not-V-VOL (3390-X) as the S-VOL
is not available.
Note
The following items indicate the note to use the V-VOL as a part of Cnt Ac-S Z pair.
•
Cnt Ac-S Z pair creation procedure when S-VOL is used by other program products:
If the S-VOL is used in one of program products: Business Copy Z, migration plan of Auto
LUN, or Compatible FlashCopy during the Cnt Ac-S Z pair creation with V-VOLs for P-VOL
and S-VOL, perform a Cnt Ac-S Z pair creation with the following procedures.
1.
Invalidate the settings of Business Copy Z, migration plan of Auto LUN, or Compatible
FlashCopy.
2. Create the Cnt Ac-S Z pair.
3. Validate the settings of Business Copy Z, migration plan of Auto LUN, or Compatible
FlashCopy, if required.
•
Designation of V-VOL containing allocated pages to S-VOL of a Cnt Ac-S Z pair:
If the V-VOL that contains allocated pages is designated to S-VOL of a Cnt Ac-S Z pair, the
pool usage of the V-VOL swells temporarily than actual usage due to the page re-allocation.
When you create a Cnt Ac-S Z pair that designates S-VOL to the allocated pages containing
V-VOL, confirm the following items.
◦ Prior to create a Cnt Ac-S Z pair, confirm that pool remaining capacity for the V-VOL is
sufficient.
◦ Prior to create the Cnt Ac-S Z pair, confirm that the pool-VOL registered in a pool is not
blocked. If the pool-VOL is blocked, restore the pool-VOL status and create the Cnt Ac-S
Z pair.
•
License capacity when using V-VOL:
When you create a Cnt Ac-S Z pair with V-VOL, the page capacity allocated to the V-VOL is
accumulated on the license capacity of Cnt Ac-S Z. And even if the P-VOL and S-VOL are the
Cnt Ac-S Z configuration of V-VOL and the pair status is Duplex, the license capacity counted
on the P-VOL and S-VOL may vary. In some cases, the license capacity counted by Cnt Ac-S
Z may be less than the page capacity using in the V-VOL. However, the license capacity of
Cnt Ac-S Z does not exceed the actually using page capacity.
Refer to the HP P9000 Provisioning for Mainframe Systems User Guide for more details of Thin
Provisioning Z.
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