6.5.1

Table Of Contents
c The missing virtual machine is located on the destination ESXi host, but it is not registered with
the destination ESXi host. In the vCenter Server instance, the missing virtual machine is marked
as orphaned. You must remove the virtual machine from the vCenter Server inventory and add it
again.
n
Restoring vCenter Server from a backup that has an out-of-date linked clone virtual machine layout.
If you create a linked clone virtual machine after the backup and you restore vCenter Server from the
old backup, then after the restore, the vCenter Server does not know about the new linked clone
virtual machine until vCenter Server discovers the new linked clone virtual machine. If you remove all
existing virtual machines before the new linked clone virtual machine is discovered, then the removal
of existing virtual machines corrupts the new linked clone due to missing disks. In order to avoid this,
you must wait until all linked clone virtual machines are discovered by the vCenter Server before you
remove virtual machines.
n
Restoring vCenter Server from a backup that was taken during virtual machine registration.
If you are registering a virtual machine during the backup and you restore vCenter Server from the old
backup, then after the restore, the virtual machine is marked as orphaned in the vCenter Server
instance. You must manually add the virtual machine to the vCenter Server inventory.
vSphere High Availability
Restoring vCenter Server from a backup might cause it to rollback to older version for the vSphere HA
cluster state (HostList, ClusterConfiguration, VM protection state) while the hosts in the cluster have the
latest version for the cluster state. You need to make sure the vSphere HA cluster state stays the same
during restore and backup operations. Otherwise, the following problems might occur.
n
If hosts are added or removed to or from the vSphere HA cluster after backup and before
vCenter Server restore, virtual machines could potentially failover to hosts not being managed by the
vCenter Server but are still part of the HA cluster.
n
Protection state for new virtual machines is not updated on the vSphere HA agents on the hosts that
are part of the vSphere HA cluster. As a result, virtual machines are not protected or unprotected.
n
New cluster configuration state is not updated on the vSphere HA agents on the hosts that are part of
the vSphere HA cluster.
vCenter High Availability
Restoring vCenter Server requires vCenter HA to be reconfigured.
Storage Policy Based Management
Restoring vCenter Server from a backup can lead to the following inconsistencies related to storage
policies, storage providers, and virtual machines.
n
Registered storage providers after backup are lost.
n
Unregistered storage providers after backup re-appear and might show different provider status.
vSphere Installation and Setup
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