Data Migration; Storage Migration - Fujitsu ETERNUS DX100 S4 Design Manual

3. SAN Functions

Data Migration

Data Migration
For the migration destination ETERNUS DX, select the same type and speed for the host inter-
face as the migration source storage system.
To change the host interface, it is recommended that a validation is performed in advance to
avoid operational impact after the migration.
For example, when data is migrated from an FC connected storage system to an ETERNUS DX
that is connected using a different type of host interface, note that the performance may seem
to be reduced due to a degraded I/O response.

Storage Migration

Storage Migration is a function that migrates the volume data from an old storage system to vol-
umes in a new storage system without using a host in cases such as when replacing a storage sys-
tem.
The migration source storage system and migration destination ETERNUS DX are connected using
FC cables. Data read from the target volume in the migration source is written to the migration
destination volume in the ETERNUS DX.
Since Storage Migration is controlled by ETERNUS DX controllers, no additional software is re-
quired.
The connection interface is FC. In addition, the direct connection and switch connection topologies
are supported.
Online Storage Migration and offline Storage Migration are supported.
Offline method
•
Stop the server during the data migration. Host access becomes available after the data migra-
tion to the migration destination volume is complete. Therefore, this method prevents host ac-
cess from affecting the ETERNUS DX and can shorten the time of the migration. This method is
suitable for cases requiring quick data migration.
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