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Ii) when thin provisioning or smart tiers is used, Iii) when cache residency is used – HP XP P9500 Storage User Manual

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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 CLPR

Number of processor blades

Total capacity of internal VOL* and
external VOL for a CLPR

12 GB or more

2

Less than 2,900 GB or more

22 GB or more

4

22 GB or more

6

42 GB or more

8

16 GB or more

2

2,900 GB or more

22 GB or more

4

32 GB or more

6

42 GB or more

8

22 GB or more

2 or 4

11,500 GB or more

32 GB or more

6

42 GB or more

8

24 GB or more

2 or 4

14,400 GB or more

32 GB or more

6

42 GB or more

8

32 GB or more

2, 4, or 6

100,000 GB or more

42 GB or more

8

32 GB or more

2, 4, or 6

128,000 GB or more

42 GB or more

8

42 GB or more

2, 4, 6, or 8

182,000 GB or more

48 GB or more

218,000 GB or more

56 GB or more

254,000 GB or more

64 GB or more

290,000 GB or more

72 GB or more

326,000 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.

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Creating virtual cache partitions