Quick Migration and Live Migration
There are two forms of automated migration provided by Windows Server 2012 Hyper-V: quick migration and live migration. These migration processes can be used to increase service availability for planned and unplanned downtime.
Although both technologies achieve the same thing—moving virtual servers between Hyper-V hosts—they use different methods and mechanisms to achieve it. Both require at least two Hyper-V host servers in a cluster, attached to the shared storage system. The shared storage can be a traditional SAN over iSCSI or Fibre Channel, and with Windows Server 2012 clustering, shared storage can now be simply a Server Message Block (SMB) file share.
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