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HP XP P9000 Cache Partition User Guide (AV400-96477, August 2012)

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associated with the CLPR. To check the LDEV capacity of the virtual volume, see the LDEV dialog
box in the Basic Information Display dialog box of the Remote Web Console subwindow. For
further information about Remote Web Console subwindow, see the HP XP P9000 Remote Web
Console User Guide.
(ii) When Thin Provisioning or Smart Tiers is used:
When you use Thin Provisioning or Smart Tiers for a CLPR, see the table below for the recommended
cache capacity.
Recommended cache capacity for a CLPRNumber of processor bladesTotal capacity of internal VOL* and
external VOL for a CLPR
12 GB or more2Less than 2,900 GB or more
22 GB or more4
22 GB or more6
42 GB or more8
16 GB or more22,900 GB or more
22 GB or more4
32 GB or more6
42 GB or more8
22 GB or more2 or 411,500 GB or more
32 GB or more6
42 GB or more8
24 GB or more2 or 414,400 GB or more
32 GB or more6
42 GB or more8
32 GB or more2, 4, or 6100,000 GB or more
42 GB or more8
32 GB or more2, 4, or 6128,000 GB or more
42 GB or more8
42 GB or more2, 4, 6, or 8182,000 GB or more
48 GB or more218,000 GB or more
56 GB or more254,000 GB or more
64 GB or more290,000 GB or more
72 GB or more326,000 GB or more
* Calculate the internal volume capacity for a CLPR using the formula below.
Internal volume capacity = number of (3D+1P) parity groups x capacity of one HDD x 3 + number of (6D+2P) parity
groups x capacity of one HDD x 6 + number of (7D+1P) parity groups x capacity of one HDD x 7 + number of
(14D+2P) parity groups x capacity of one HDD x 14 + number of (2D+2D) parity groups x capacity of one HDD x 2
(iii) When Cache Residency is used:
When you use the Priority mode by using Cache Residency for a CLPR, you may want to add
cache capacity depending on the number of areas in which the priority mode is set in addition to
the cache used for Cache Residency. For further information, see the Priority mode section of the
HP XP P9000 Performance for Open and Mainframe Systems User Guide.
6 Creating virtual cache partitions