6.0.2

To reduce the host remediation downtime at the expense of virtual machine availability, you can choose
to shut down or suspend virtual machines and virtual appliances before remediation. In a DRS cluster,
if you do not power o the virtual machines, the remediation takes longer but the virtual machines are
available during the entire remediation process, because they are migrated with vMotion to other hosts.
11 (Optional) Select Retry entering maintenance mode in case of failure, specify the number of retries,
and specify the time to wait between retries.
Update Manager waits for the retry delay period and retries puing the host into maintenance mode as
many times as you indicate in Number of retries eld.
12 (Optional) Select Disable any removable media devices connected to the virtual machine on the host.
Update Manager does not remediate hosts on which virtual machines have connected CD, DVD, or
oppy drives. In cluster environments, connected media devices might prevent vMotion if the
destination host does not have an identical device or mounted ISO image, which in turn prevents the
source host from entering maintenance mode.
After remediation, Update Manager reconnects the removable media devices if they are still available.
13 Click Next.
14 Edit the cluster remediation options.
The Cluster Remediation Options page is available only when you remediate hosts in a cluster.
Option Details
Disable Distributed Power
Management (DPM) if it is enabled
for any of the selected clusters.
Update Manager does not remediate clusters with active DPM.
DPM monitors the resource use of the running virtual machines in the
cluster. If sucient excess capacity exists, DPM recommends moving
virtual machines to other hosts in the cluster and placing the original host
into standby mode to conserve power. Puing hosts into standby mode
might interrupt remediation.
Disable High Availability admission
control if it is enabled for any of the
selected clusters.
Update Manager does not remediate clusters with active HA admission
control.
Admission control is a policy used by VMware HA to ensure failover
capacity within a cluster. If HA admission control is enabled during
remediation, the virtual machines within a cluster might not migrate with
vMotion.
Disable Fault Tolerance (FT) if it is
enabled for the VMs on the selected
hosts.
If FT is turned on for any of the virtual machines on a host,
Update Manager does not remediate that host.
For FT to be enabled, the hosts on which the Primary and Secondary
virtual machines run must be of the same version and must have the same
patches installed. If you apply dierent patches to these hosts, FT cannot
be re-enabled.
Chapter 9 Upgrading Hosts
VMware, Inc. 167