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Introduction to Live Migrate and Volume Advisor
6 Dell EMC SC Series Live Migrate and Volume Advisor | 3186-BP-SC
1.1 Live Migrate states
Live Migrate moves a volume from one SC Series array to another without I/O or application disruption.
During a Live Migrate, both the source and destination arrays can accept reads and writes for the volume
being moved.
During a Live Migrate, the relationship between the server, source and destination arrays; the volume; and
where a read or write I/O is serviced; goes through several different states. The Live Migrate process has four
significant phases listed as follows:
• Before Live Migrate
• During data movement
• After role swap
• Completion
1.1.1 Before Live Migrate
Figure 2 illustrates the environment layout prior to Live Migrate configuration. The server (1) is connected with
iSCSI, FC, or FCoE (2) to the source SC Series array (3), which currently hosts the volume (4). All I/O
requests for the volume are serviced by the source array. If the server is not defined and connected to the
destination SC Series array (5), then during the configuration of the Live Migrate for the volume, this will be
detected and the administrator will be prompted to resolve the connection. If replication (6) between the
source and destination is not configured, Live Migrate will prompt for this to be configured and a source
replication QoS node to be created.
Configuration of environment prior to Live Migrate