VMware vSphere vCenter Server 4.0 - Manual (Page 55)

4 Select the rule you want to remove and click Remove.
The rule is deleted.
Adding Hosts to a Cluster
The procedure for adding hosts to a cluster is different for hosts managed by the same vCenter Server (managed
hosts) than for hosts not managed by that server.
After a host has been added, the virtual machines deployed to the host become part of the cluster and DRS can
recommend migration of some virtual machines to other hosts in the cluster.
Add a Managed Host to a Cluster
When you add a standalone host already being managed by vCenter Server to a DRS cluster, the host’s
resources become associated with the cluster.
You can decide whether you want to associate existing virtual machines and resource pools with the cluster’s
root resource pool or graft the resource pool hierarchy.
N
OTE
If a host has no child resource pools or virtual machines, the host’s resources are added to the cluster
but no resource pool hierarchy with a top-level resource pool is created.
Procedure
1 Select the host from either the inventory or list view.
2 Drag the host to the target cluster object.
3 Select what to do with the host’s virtual machines and resource pools.
n Put this host’s virtual machines in the cluster’s root resource pool
vCenter Server removes all existing resource pools of the host and the virtual machines in the host’s
hierarchy are all attached to the root. Because share allocations are relative to a resource pool, you
might have to manually change a virtual machine’s shares after selecting this option, which destroys
the resource pool hierarchy.
n Create a resource pool for this host’s virtual machines and resource pools
vCenter Server creates a top-level resource pool that becomes a direct child of the cluster and adds
all children of the host to that new resource pool. You can supply a name for that new top-level
resource pool. The default is Grafted from <host_name>.
The host is added to the cluster.
Add an Unmanaged Host to a Cluster
You can add an unmanaged host to a cluster. Such a host is not currently managed by the same vCenter Server
system as the cluster and it is not visible in the vSphere Client.
Procedure
1 Select the cluster to which to add the host and select Add Host from the right-click menu.
2 Enter the host name, user name, and password, and click Next.
3 View the summary information and click Next.
4 Select what to do with the host’s virtual machines and resource pools.
n Put this host’s virtual machines in the cluster’s root resource pool
Chapter 6 Using DRS Clusters to Manage Resources
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