Tier relocation log file contents, Tiering policy function – HP XP P9500 Storage User Manual
Page 84
2.
In the Pool window, click More Actions > Tier Relocation Log.
3.
In the progress dialog box, click OK.
4.
A dialog box opens allowing you to select where to download the file. Specify the folder in
which to download the file, and then click Save.
If you change the file name from the default, make sure the file name contains the .tsv extension
before saving a renamed file.
Tier relocation log file contents
The tier relocation log file is a tab-delimited file and contains the following information:
Description
Item
Pool identifier.
Pool ID
Start date when the relocation was performed.
Start Relocation Time
End date of the relocation.
End Relocation Time
The detailed results of the relocation.
Result
Execution status.
Status
•
Normal
•
Cancel
Additional detail, indicating the causes of ending or canceling tier relocation.
Detail
•
It was interrupted by annulling the monitor data.
•
It was interrupted by not completing within the cycle of relocation.
•
It was interrupted by the user instruction.
Number of pages moved between tiers.
Move Page Num
Number of pages moved from tier 1 to tier 2.
Tier1->Tier2
Number of pages moved from tier 1 to tier 3.
Tier1->Tier3
Number of pages moved from tier 2 to tier 1.
Tier2->Tier1
Number of pages moved from tier 2 to tier 3.
Tier2->Tier3
Number of pages moved from tier 3 to tier 1.
Tier3->Tier1
Number of pages moved from tier 3 to tier 2.
Tier3->Tier2
Tiering Policy function
The Tiering Policy function is used to assign a specific storage tier to a specific THP V-VOL. A tiering
policy is the specification of which subset of tiers is available to a given set of THP V-VOLs.
For example, if you set the tiering policy on a THP V-VOL to a tier whose I/O speed is high, the
data is always stored on the high-speed tier. Therefore, when you use that THP V-VOL, regardless
of the quantity of the I/O load, you can always get high-speed responses (see
).
You can set the tiering policy for up to six tiering levels (see
“Setting tiering policy on a THP V-VOL”
).
You can designate a tiering policy or multiple tiering policies when creating the THP V-VOL. Use
the Edit LDEVs window to change the tiering policy settings. When relocation operates, the related
tiering policy that is set to the THP V-VOL will be used to relocate its data to the desired tier or
tiers.
The tiering policy does not own pool capacity. Pool capacity is shared.
84
Configuring thin provisioning