Advanced Storage and Networking Features - Getting Started with Red Hat Enterprise Virtualization - page 126

Storage live migration
RHEV storage live migration of virtual hard disks allows you to move the virtual machine
hard disks from one storage domain to another storage domain in the same data center
without powering off the virtual machine. This will be useful in a scenario when the current
storage domain where the virtual machine hard disk resides is running out of space, to
move the virtual machine workloads to high- or low-performance storage based on de-
mand, or to migrate from one type of storage to another type of storage prior to the decom-
mission of one of your storage domains.
To move a virtual machine hard disk from one storage data domain to another domain, fol-
low these steps:
1. Log in to the Administrator console and navigate to the Virtual machines re-
source tab.
2. Select the appropriate virtual machine and navigate to the Disks subtab on the bot-
tom pane.
3. Select the virtual disk/disks and then right-click on it/them. Then, click on the
Move option.
4. On the Move Disk window, select the Target Storage domain from the drop-down
menu.
5. Click on OK to move, and close the window.
During the course of migration, the disk status changes to Locked while being moved, and
the status changes back to Up when the virtual hard disk has moved to the target domain.