6.0

Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 In the vSphere Client inventory, right-click a host and select Enter Maintenance Mode.
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If the host is part of a partially automated or manual DRS cluster, a list of migration
recommendations for virtual machines running on the host appears.
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If the host is part of an automated DRS cluster, virtual machines are migrated to different hosts
when the host enters maintenance mode.
2 If applicable, click Apply Recommendations.
The host is in maintenance mode until you select Exit Maintenance Mode.
Remove a Host from a Cluster
You can remove hosts from a cluster.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 In the vSphere Client, right-click the host in the inventory and select Enter Maintenance Mode.
2 When the host is in maintenance mode, drag it to a different inventory location, either the top-level
datacenter or to a different cluster.
After you remove a host from a cluster, you can perform the following tasks.
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Remove the host from vCenter Server: Right-click the host and select Remove.
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Run the host as a standalone host under vCenter Server: Right-click the host and select Exit
Maintenance Mode.
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Drag the host into another cluster.
When you move the host, its resources are removed from the cluster. If you grafted the host’s resource pool
hierarchy onto the cluster, that hierarchy remains with the cluster.
Using Standby Mode
When a host machine is placed in standby mode, it is powered off.
Normally, hosts are placed in standby mode by the vSphere DPM feature to optimize power usage. You can
also place a host in standby mode manually. However, DRS might undo (or recommend undoing) your
change the next time it runs. To force a host to remain off, place it in maintenance mode and power it off.
vSphere Administration with the vSphere Client
362 VMware, Inc.