VMware View Administrator's Guide : Managing Linked-Clone Desktops : Manage View Composer Persistent Disks : View Composer Persistent Disks

View Composer Persistent Disks
With View Composer, you can configure OS data and user information on separate disks in linked-clone desktops. View Composer preserves the user information on the persistent disk when the OS data is updated, refreshed, or rebalanced.
A View Composer persistent disk contains user settings and other user-generated data.
You can detach a persistent disk from its linked-clone desktop and store the disk on its original datastore or another datastore. After you detach the disk, the linked-clone virtual machine is deleted. A detached persistent disk is no longer associated with any desktop.
You can use several methods to attach an detached persistent disk to another linked-clone desktop. This flexibility has several uses:
Note
You cannot detach a persistent disk from a Windows XP linked clone and recreate or attach the persistent disk to a Windows 7 or Windows Vista linked clone. Persistent disks must be reconnected to the operating system that was used when they were created.
View Manager can manage persistent disks from linked-clone pools that were created in View Manager 4.5. Persistent disks that were created in earlier versions of View Manager cannot be managed and do not appear on the Persistent Disks page in View Administrator.