Administrator Guide
Requirement Description
NOTE: Both Storage Centers should be running the same
version of Storage Center software.
Storage Center license No additional license is necessary.
Storage Manager conguration The source and destination Storage Centers must be added to
Storage Manager.
Storage Center communication The source and destination Storage Centers must be connected
using Fibre Channel or iSCSI, and each Storage Center must be
dened on the other Storage Center.
• On the source Storage Center, the destination Storage Center
must be dened as a remote Storage Center.
• On the destination Storage Center, the source Storage Center
must be dened as a remote Storage Center.
Replication QoS denitions Replication Quality of Service (QoS) denitions must be dened on
the source Storage Center.
Server
• The source and destination Storage Centers must be mapped to
a server.
• MPIO must be enabled on the destination server to prevent I/O
interruption during a Live Migration.
Live Migration Roles
Live Migrations have two roles: source and destination. These roles determine the active volume that is servicing I/O. The roles can be
swapped one time, either automatically or manually.
In the following examples, the server sends an I/O request that modies the source volume. The changes to the source volume are
replicated to the destination Storage Center over Fibre Channel or iSCSI.
Before Live Migration
Before a Live Migration, the server sends I/O requests only to the volume to be migrated.
Figure 11. Example of Conguration Before Live Migration
1
Server 2 Server I/O request to volume over Fibre Channel or iSCSI
3 Volume to be migrated
Storage Center Administration 121