Specifications

3 (Optional) Select Retry entering maintenance mode in case of failure, specify the retry delay, and the
number of retries.
If a host fails to enter maintenance mode before remediation, Update Manager waits for the retry delay
period and retries putting the host into maintenance mode as many times as you indicate in Number of
retries field.
4 (Optional) Select Temporarily disable any removable media devices that might prevent a host from
entering maintenance mode.
Update Manager does not remediate hosts on which virtual machines have connected CD/DVD or
floppy drives. All removable media drives that are connected to the virtual machines on a host might
prevent the host from entering maintenance mode and interrupt remediation.
After remediation, Update Manager reconnects the removable media devices if they are still available.
5 Click Apply.
These settings become the default failure response settings. You can specify different settings when you
configure individual remediation tasks.
Configure Cluster Settings
For ESX/ESXi hosts in a cluster, the remediation process can run either in a sequence or in parallel. Certain
features might cause remediation failure. If you have VMware DPM, HA admission control, or Fault
Tolerance enabled, you should temporarily disable these features to make sure that the remediation is
successful.
NOTE Remediating hosts in parallel can improve performance significantly by reducing the time required
for cluster remediation. Update Manager remediates hosts in parallel without disrupting the cluster
resource constraints set by DRS.
Prerequisites
Connect the vSphere Client to a vCenter Server system with which Update Manager is registered, and on
the Home page, click Update Manager under Solutions and Applications. If your vCenter Server system is
part of a connected group in vCenter Linked Mode, you must specify the Update Manager instance to use,
by selecting the name of the corresponding vCenter Server system in the navigation bar.
Procedure
1 On the Configuration tab, under Settings, click ESX Host/Cluster Settings.
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