HP XP Racks - Manual (Page 72)

Figure 4 Using Thin Provisioning or Smart Tiers and Auto LUN
Explanation Auto LUN target volume Auto LUN source volume
Supported. THP V-VOLs THP V-VOLs
Supported. Normal (ordinary)
volumes* THP V-VOLs
Supported. THP V-VOLs Normal (ordinary) volumes*
Note, however, that this combination consumes the same
amount of pool capacity as the normal volume.
*Normal volumes include the internal volumes and external volumes that are mapped to the volumes of the external
storage system using External Storage. For more information on external volumes, see the HP XP7 External Storage
for Open and Mainframe Systems User Guide.
You cannot specify a Thin Provisioning or Smart Tiers pool-VOL as a Auto LUN source volume and
target volume.
If you specify the THP V-VOL as the source volume, you must not specify the THP V-VOL that uses
the same pool of the source volume.
For details about the migration of THP V-VOLs used in the following pairs, see XP7 Auto LUN User
Guide.
•
Business Copy
•
Continuous Access Journal
Fast Snap
When using Thin Provisioning, Thin Provisioning Z, and Fast Snap in a storage system, note the
following:
•
Pools for Thin Provisioning (including Smart Tiers) and Thin Provisioning Z (including Smart
Tiers Z) cannot be used in conjunction with Fast Snap. The pool for Fast Snap cannot be used
in conjunction with Thin Provisioning or Thin Provisioning Z.
•
Up to 128 pools in total can be used for Thin Provisioning (including Smart Tiers), Thin
Provisioning Z (including Smart Tiers Z), and Fast Snap.
•
A pool-VOL cannot be shared with Thin Provisioning (including Smart Tiers), Thin Provisioning
Z (including Smart Tiers Z), and Fast Snap.
Cache Partition CLPR setting
THP V-VOLs and the associated pool volumes should be assigned to the same CLPR.
For a Thin Provisioning or Smart Tiers pool, different CLPRs can be assigned to THP V-VOLs in the
same pool. In this case, the CLPR assigned to the pool volumes is ignored.
72 Configuring thin provisioning