SCVMM support four types of virtual machine migration from one host to another.
The migration types are:
| Quick Migration | Enables a Hyper-V virtual machine to be relocated from one virtual host to another with minimum downtime.
The downtime is directly related to the amount of memory assigned to the VM, as well as the speed of the connection between virtual hosts and shared storage. |
| SAN Migration | Available only when source and destination have access to the same LUN.
When you make a SAN transfer, the logical unit number (LUN) containing the virtual machine is remapped from the source computer to the destination computer instead of transferring the files over the network. Therefore, SAN transfers are much faster than standard network transfers and are independent of the size of the files being transferred. |
| Live Migration | Live migration allows you to transparently move running virtual machines from one node of the failover cluster to another node in the same cluster without a dropped network connection or perceived downtime.
Live Migration requires the failover clustering feature and Cluster Shared Volumes (CSVs) |
| Quick Storage Migration (QSM) | This migration technology uses the network to migrate the data.
QSM takes a snapshot of the running VM and starts transferring the data to the destination host whilst the VM is still running. The VM stays running as long as possible to minimise downtime. Only available in SCVMM 2008 R2. |
Related posts:
- How Do I: Configure a Cluster Shared Volume to support Live Migration with Microsoft Windows Server 2008 R2 and Hyper-V?
- Failover Clustering & Hyper-V
- How Do I: Build a highly available virtualization cluster with Microsoft Windows Server 2008 R2 and Hyper-V?
- VMM Library
- MCTS Exam Booked : 70–659 Server Virtualization
