Note
When specifying Low
When specifying
Middle
When specifying High
Tiering policy
Assignment sequences when
High, Middle, and Low are
same.
From the 2, 3, to 1
From tier 2, 3, to 1
From tier 2, 3, to 1
Level 3
If you set Low, tier 3 is given
priority over tier 2.
From tier 3, 2, to 1
From tier 2, 3, to 1
From tier 2, 3, to 1
Level 4
Assignment sequences when
High, Middle, and Low are
same.
From tier 3, 2, to 1
From tier 3, 2, to 1
From tier 3, 2, to 1
Level 5
Order of new page allocation
Condition
Number
Same as Level1(1)
T1 MIN = 100%
1
Same as Level5(5)
T3 MIN = 100%
2
Same as Level2(2)
T1 MAX > 0% and T3 MAX = 0%
3
Same as Level3(3)
T1 MAX = 0% and T3 MAX = 0%
4
Same as Level4(4)
T1 MAX = 0% and T3 MAX > 0%
5
Same as All(0)
T1 MAX > 0% and T3 MAX > 0%
6
Relocation priority
If you use the relocation priority function, you can set the selection priority of a THP V-VOL when
performing relocation. With this setting, a prioritized THP V-VOL can be relocated earlier during
a relocation cycle. You can set this function by using Remote Web Console. The function is activated
after the monitoring data is collected.
•
If no relocation priority is set for all THP V-VOLs, the general order of THP V-VOL selection is
to select the next THP V-VOL in LDEV number order after the last THP V-VOL that fully performed
relocation. This selection order persists across relocation cycles.
•
If one or more THP V-VOLs is assigned a relocation priority, the prioritized THP V-VOLs are
operated upon in the early portion of the relocation cycle, before others in the general order
of THP V-VOL selection.
•
If V-VOL is not given priority for relocation:
For example, if LDEVs of LDEV IDs with LDEV#1, LDEV#2, LDEV#3, LDEV#4, and LDEV#5 are
not given priority for relocation, 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 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
Unperformed
Unperformed
3rd
2nd
1st
T1
2nd
1st
Unperformed
Unperformed
3rd
T2
Unperformed
3rd
2nd
1st
Unperformed
T3
1st
Unperformed
Unperformed
3rd
2nd
T4
Smart Tiers 107
Содержание XP7
Страница 229: ...Select LDEVs window Available LDEVs table Description Item LDEV identifiers LDEV ID Create Resource Groups wizard 229 ...
Страница 303: ...Pools Volume tabs Pools Volume tabs 303 ...
Страница 378: ...Add LUN Paths wizard Select LDEVs window Available LDEVs table 378 LUN Manager GUI reference ...
Страница 381: ...Select Host Groups window Available Host Groups table Add LUN Paths wizard 381 ...