5.2

When a local mode operation is initiated or resumed, View uses the virtual machine disk's content ID (CID)
to
track whether a vCenter Server disk was modified since the last synchronization between a vCenter Server
disk and the corresponding local desktop disk. If the vCenter Server virtual machine in the datacenter and the
local desktop are not the same, the local mode operation is stopped, and the user sees the following message:
This desktop has been modified at the datacenter. Please contact your system administrator.
You can recover the local desktop virtual machine, vCenter Server virtual machine, or both versions, depending
on the local mode operation that was underway.
Recovering the Local Desktop Version of the Virtual Machine
If a desktop is fully checked out or a user is checking in or replicating a desktop, and the vCenter Server virtual
machine is modified, the user might have valuable data on the local desktop.
You can recover the local desktop version by using the vdmadmin command with the -V -recoverClientVM
option. This option reverts the vCenter Server virtual machine to the snapshot that was taken during the last
synchronization. You can then instruct the user to start the check-in operation again.
Recovering the vCenter Server Version of the Virtual Machine
If a desktop is fully checked out or a user is checking out a desktop, and the vCenter Server virtual machine
in the datacenter was modified, you might have installed applications or performed valuable updates on the
vCenter Server virtual machine.
You can recover the vCenter Server version by using the vdmadmin command with the -V -recoverServerVM
option. This option takes a new snapshot of the vCenter Server virtual machine, deletes the old snapshot, and
rolls back the virtual machine. During a rollback, the local View desktop is discarded. You can then instruct
the user to start the check-out operation again.
Recovering Both Versions of the Virtual Machine
In a special situation in which a desktop is fully checked out, and no check-in or replication was underway
when the vCenter Server virtual machine was opened, you might want to preserve both the client and vCenter
Server virtual machines. Perhaps valid, useful contents were created on both virtual machines. In vCenter
Server, you can clone the vCenter Server virtual machine to preserve an identical copy. Next, you can use the
vdmadmin command with the -V -recoverClientVM option to recover the client virtual machine.
Options
Table 17-18. Options for Recovering the Client or vCenter Server Versions of a Local Desktop
Option Description
-recoverClientVM
Recovers a local desktop virtual machine that resides on a
client
system. The vCenter Server virtual machine is reverted
to the snapshot that was taken during the last
synchronization.
-recoverServerVM
Recovers a vCenter Server virtual machine by taking a new
snapshot of the virtual machine. The old snapshot is deleted.
The virtual machine is rolled back, which discards the local
desktop virtual machine.
-d desktop_pool Specifies the name of the desktop pool.
-m virtual_machine Specifies the name of the local desktop's virtual machine.
VMware Horizon View Administration
436 VMware, Inc.