Server load balancing without storage impact
When the I/O load on a virtual storage machine at the primary site increases,
as shown below, global-active device enables you to migrate the virtual
machine to the paired server without performing any operations on the
storage systems.
As shown in this example, the server virtualization function is used to migrate
virtual machine VM 3 from the primary-site server to the secondary-site
server. Because the GAD primary and secondary volumes contain the same
data, you do not need to migrate any data between the storage systems.
Overview of global-active device
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Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
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