HP XP7 Provisioning for Open Systems User Guide (H6F56-96009)

example, three LDEVs are relocated in each period, but the number of LDEVs to relocate may
change by the relocation cycle or the data size.
Relocating
sequence of
LDEV#5 in each
cycle
Relocating
sequence of
LDEV#4 in each
cycle
Relocating
sequence of
LDEV#3 in each
cycle
Relocating
sequence of
LDEV#2 in each
cycle
Relocating
sequence of
LDEV#1 in each
cycle
Relocating cycle
UnperformedUnperformed3rd2nd1stT1
2nd1stUnperformedUnperformed3rdT2
Unperformed3rd2nd1stUnperformedT3
1stUnperformedUnperformed3rd2ndT4
• If V-VOL is given priority for relocation:
For example, if LDEVs of LDEV IDs with LDEV#3 and LDEV#4 are set priority for relocation
from LDEV#1 to LDEV#5, LDEVs are relocated with the following sequences. In this example,
three LDEVs are relocated in each period, but the number of LDEVs to relocate may change
by the relocation cycle or data size.
Relocating
sequence of
LDEV#5 in each
cycle
Relocating
sequence of
LDEV#4 in each
cycle
Relocating
sequence of
LDEV#3 in each
cycle
Relocating
sequence of
LDEV#2 in each
cycle
Relocating
sequence of
LDEV#1 in each
cycle
Relocating cycle
Unperformed2nd1stUnperformed3rdT1
Unperformed2nd1st3rdUnperformedT2
3rd2nd1stUnperformedUnperformedT3
Unperformed2nd1stUnperformed3rdT4
Assignment tier when pool-VOLs are deleted
When you delete pool-VOLs, the pages allocated to the pool-VOLs are moved to other pool-VOLs.
The following table shows the tier numbers to which pages are allocated before and after pool-VOLs
are deleted. This operation does not depend on the tiering policy or the settings of newly assigned
tiers. Relocate tiers after deleting pool-VOLs.
The following table describes page allocation in a 3-tier configuration.
DescriptionOrder in which pages are
allocated to tiers
Tier of deleted pool-VOLs
If there is free space in Tier 1, pages are
allocated to Tier 1.
Tier 1, Tier 2, and Tier 3Tier 1
If there is no free space in Tier 1, pages are
allocated to Tier 2.
If there is no free space in Tier 1 and Tier 2,
pages are allocated to Tier 3.
If there is free space in Tier 2, the pages are
allocated to Tier 2.
Tier 2, Tier 1, and Tier 3Tier 2
If there is no free space in Tier 2, pages are
allocated to Tier 1.
Smart Tiers 107