Figure 28 Raid Migration - Fujitsu ETERNUS AF S3 Series Design Manual

2. Basic Functions
Optimization of Volume Configurations
The volume number (LUN) does not change before and after the migration. The host can access the volume
before, during, or after a migration without being affected by the volume number.
The following changes can be performed by RAID Migration.
Changing the volume type
•
A volume is changed to the appropriate type for the migration destination RAID groups or pools (TPP and
FTRP).
Changing the encryption attributes
•
The encryption attribute of the volume is changed according to the encryption setting of the volume or the
encryption attribute of the migration destination pool (TPP and FTRP).
• Changing the number of concatenations and the Wide Stripe Size (for WSV)
Enabling the Deduplication/Compression function for existing volumes
•
The following processes can also be specified.
Capacity expansion
•
When migration between RAID groups is performed, capacity expansion can also be performed at the same
time. However, the capacity cannot be expanded for TPVs or FTVs.
• TPV/FTV Capacity Optimization
When the migration destination is a pool (TPP or FTRP), TPV/FTV capacity optimization after the migration can
be set.
For details on the features of TPV/FTV capacity optimization, refer to
55).
Figure 28 RAID Migration
TPP (Unencrypted)
TPV (Deduplication/
Compression is enabled)
TPV (Deduplication/
Compression is disabled)
Unencrypted volumes
:
Encrypted volumes
:
Specify unused areas in the migration destination (RAID group or pool) with a capacity larger than the migration
source volume. Note that RAID groups that are registered as REC Disk Buffers cannot be specified as a migration
destination.
RAID Migration may not be available when other functions are being used in the ETERNUS AF or the target
volume.
RAID group
Standard
Standard
TPP (Encrypted)
TPV (Deduplication/
Compression is enabled)
TPV (Deduplication/
Compression is disabled)
"TPV/FTV Capacity Optimization" (page
The volume type depends on the
migration destination.
A volume becomes encrypted
WSV
when moved to an encrypted pool.
WSV
FTRP (Unencrypted)
FTV
64
FTRP (Encrypted)
FTV
Design Guide