Storage Migration - Fujitsu ETERNUS DX80 S2 User Manual

Chapter 3 Setup

3.3 Storage Migration

3.3 Storage Migration
Storage Migration is a function that migrates the volume data from an old storage system to volumes in a
new storage system without using a server in cases such as when replacing a storage system.
The source storage system and destination ETERNUS DX Disk storage system are physically connected using
cables. Data read from the target volume in the Migration Source is written to the Destination volume in the
ETERNUS DX Disk storage system.
Since Storage Migration is controlled by ETERNUS DX Disk storage system controllers, no additional software
functions are required.
This section describes the restrictions and notes on using Storage Migration.
For details on the Storage Migration procedure, refer to "ETERNUS Web GUI User's Guide".
• Data migration is performed in units of volumes.
• Up to 16 migration source devices can be specified.
• Up to eight migration paths can be created for each migration source device.
• The maximum number of migration volumes for each migration path is 512.
• Storage Migration can be performed when the migration destination device has a larger volume capacity
than the migration source device.
• Volumes for which the volume type (Standard/Open, TPV, or SDV) is available for the host affinity settings
can be specified as migration source volumes.
Standard/Open, WSV, TPV, or FTV type volumes can be specified as migration destination volumes.
• Storage Migration can be performed if the following conditions are satisfied:
- Stop server access to the migration source volumes and the migration destination volumes.
When "Migration + Full Compare" or "Full Compare" is specified for the operation mode, stop the host
access to all of the volumes in the migration destination device.
- Do not specify volumes with existing copy sessions as migration source or migration destination
volumes.
- Do not specify volumes that are being formatted as migration source volumes.
- Do not perform the [Start RAID Group Diagnosis] function or the [Start Disk Diagnosis] function in a
migration source device.
• The FC port mode of the migration destination device must be changed to "Initiator" and the port
parameters must be set.
• The migration paths must be deleted after Storage Migration is complete.
When deletion of the migration paths is complete, change the FC port mode from "Initiator" to "CA" and set
the port parameters. Set the host affinity setting to recognize migration destination volumes from the
server.
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Operation-
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