6.7

Optional vCenter Server features include:
vMotion Enables you to move running virtual machines from one ESXi host to
another ESXi host without service interruption. It requires licensing on both
the source and target host. vCenter Server centrally coordinates all vMotion
activities.
Storage vMotion Allows you to move the disks and configuration file of a running virtual
machine from one datastore to another without service interruption. It
requires licensing on the virtual machine's host.
vSphere HA Enables a cluster with High Availability. If a host fails, all virtual machines
that were running on the host are promptly restarted on different hosts in
the same cluster.
When you enable the cluster for vSphere HA, you specify the number of
hosts you want to be able to recover. If you specify the number of host
failures allowed as 1, vSphere HA maintains enough capacity across the
cluster to tolerate the failure of one host. All running virtual machines on
that host can be restarted on remaining hosts. By default, you cannot turn
on a virtual machine if doing so violates required failover capacity.
vSphere DRS Helps improve resource allocation and power consumption across all hosts
and resource pools. vSphere DRS collects resource use information for all
hosts and virtual machines in the cluster and gives recommendations (or
migrates virtual machines) in one of two situations:
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Initial placement – When you power on a virtual machine in the cluster
for the first time, DRS either places the virtual machine or makes a
recommendation.
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Load balancing – DRS attempts to improve resource use across the
cluster by performing automatic migrations of virtual machines
(vMotion) or by providing a recommendation for virtual machine
migrations.
vSphere DRS includes distributed power management (DPM) capabilities.
When DPM is enabled, the system compares cluster-level and host-level
capacity to the demands of virtual machines that are running in the cluster.
Based on the results of the comparison, DPM recommends (or implements)
actions that can reduce the power consumption of the cluster.
Storage DRS Allows you to manage multiple datastores as a single resource, called a
datastore cluster. A datastore cluster is an aggregation of multiple
datastores into a single logical, load-balanced pool. You can treat the
datastore cluster as a single flexible storage resource for resource
management purposes. You can assign a virtual disk to a datastore cluster,
and Storage DRS finds an appropriate datastore for it. The load balancer
vCenter Server and Host Management
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