Hitachi MK-96RD617-08 User Manual page 23

The information in the table does not apply to the USP VM storage system
because USP VM has only one pair of DKA. If you are using USP VM and
you want to know usage rates of DKPs, check the usage rate of each parity
group . For details on how to view usage statistics about disk adapters and
disk processors, see Viewing Usage Statistics on Disk Processors.
2. Check the usage rate of each parity group to find parity groups whose
usage rate is lower than the parity groups that you want to migrate. It is
recommended you migrate volumes from higher-usage parity groups to
lower-usage parity groups.
Table 2-1 Migrating Volumes in USP V Storage Systems When Disk
Processor Usage Rate is High
Cluster Disk Adapter
1 DKA1AU
1 DKA-1BU
1 DKA-AL
1 DKA-BL
1 DKA-1LU
1 DKA-1KU
1 DKA-1LL
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Disk Processor Migrating Volumes in USP V Storage System
Migrate volumes from parity groups with the following
DKP40-1AU
IDs to another parity group:
DKP41-1AU
1-X
DKP42-1AU
3-X
DKP43-1AU
11-X
DKP50-1BU Migrate volumes from parity groups with the following
IDs to another parity group:
DKP51-1BU
2-X
DKP52-1BU
4-X
DKP53-1BU
12-X
DKP44-1AL Migrate volumes from parity groups with the following
IDs to another parity group:
DKP45-1AL
5-X
DKP46-1AL
13-X
DKP47-1AL
DKP54-1BL Migrate volumes from parity groups with the following
IDs to another parity group:
DKP55-1BL
6-X
DKP56-1BL
14-X
DKP57-1BL
DKP60-1LU Migrate volumes from parity groups with the following
IDs to another parity group:
DKP61-1LU
7-X
DKP62-1LU
15-X
DKP63-1LU
DKP70-1KU Migrate volumes from parity groups with the following
IDs to another parity group:
DKP71-1KU
8-X
DKP72-1KU
16-X
DKP73-1KU
DKP64-1LL Migrate volumes from parity groups with the following
IDs to another parity group:
DKP65-1LL
9-X
DKP66-1LL
17-X
DKP67-1LL
About Performance Manager Options 2-7