License Capacity Requirements - HP XP P9500 User Manual

Table 1 System Requirements (continued)
Item
Consistency groups

License capacity requirements

The total capacity of your pair volumes must be less than the maximum volume capacity licensed
to you.
After operations begin, you should be aware of capacity requirements in order to keep volumes'
total size within purchased capacity.
P-VOLs, S-VOLs, and volumes that have been reserved for use as S-VOLs must have licensed
capacity. The total of these volumes capacity must not be more than licensed capacity.
Snapshot P-VOLs and pool volumes require the Business Copy Z license capacity.
The capacity of a volume used for multiple purposes is counted only once; there is no need
to multiply the capacity by the number of purposes it is used for.
When a Thin Provisioning volume is used as a Business Copy or Snapshot P-VOL or S-VOL or
a reserved volume, the capacity of the Thin Provisioning pool that is allocated to the volume
is added to the Business Copy or Snapshot license capacity. The license capacity of Thin
Provisioning volumes are not updated in real time. As a result, multiple write requests to pools
may cause excess of the Business Copy or Snapshot license capacity. You can only use the
license capacity that you purchased.
When your Business Copy or Snapshot volumes exceed license capacity, you are allowed to
use the volumes for additional 30 days. After that, Business Copy or Snapshot operations can
no longer be performed, except for deleting pairs.
The following table shows volumes and capacities that are counted as the usage capacity of
Business Copy/Snapshot. The total capacity of the following must be less than the capacity that
you purchased.
Table 2 The volumes and capacities to be counted as the usage capacity of Business Copy
Volume to be counted
Program product
Business Copy
Requirement
Maximum number of pairs decreases if LUSE volumes are used.
You can configure up to 128 consistency groups in a storage system, including Business
Copy consistency groups and Snapshot consistency groups.
Note: Business Copy Z pairs, and Snapshot pairs cannot coexist in the same consistency
group.
You can define up to 8,192 Business Copy pairs in a consistency group.
Note: LUSE volumes that contain n LDEVs should be counted as n volumes. For further
information on LUSE volumes, see HP P9000 Provisioning for Open Systems User
Guide.
A number (0–7F) is assigned to each consistency group. You can specify a consistency
group number when you create Business Copy pairs, or if you do not specify a number,
the storage system assigns a number automatically.
The kind of the volumes
P-VOL
S-VOL
Capacity to be counted
Normal-VOL or THP
V-VOL
Normal VOL Volume capacity
THP V-VOL Pool capacity that the
volume is using
Normal VOL Volume capacity
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