Datasheet

CONFIGURE DATACENTERS AND CLUSTERS 27
Install, Con gure, and Manage the vSphere Environment
PART I
Creating Datacenters
Datacenters are generally created as part of the initial setup process.  e setup can
be automated by using the following code, which will create a datacenter called
Boston and store it in a variable.  e Datacenter object held within the variable
can then be referred to later in the code as you create clusters or folders:
$BostonDC = New-Datacenter -Name Boston
Creating Clusters
Clusters are more complex than datacenters; there are many con gurable items
available for a new cluster. Consider the options the vSphere Client gives us: the nor-
mal cluster options as well as con guration options for VMware High Availability
(HA), VMware Distributed Resource Scheduler (DRS), VMware Enhanced VMotion
Compatibility (EVC), and VMware Distributed Power Management (DPM).
To create a new cluster in the Boston datacenter you created earlier, you can use the
following code:
$ProductionCluster = New-Cluster -Location $BostonDC `
-Name “Production”
 is code line gives you the basic settings.  e sections that follow discuss the addi-
tional cluster settings available to you.
Configuring High Availability
When con gured in a cluster, VMWare HA gives you many advantages, including
the following:
Proactive monitoring of all vSphere hosts and VMs 
Automatic detection of vSphere host failure 
Rapid restart of VMs a ected by host failure 
Optimal placement of VMs a er server failure 
Much like the con guration of a cluster through the vSphere client, you can con g-
ure HA within a cluster either as part of the initial cluster setup or you can alter an
existing cluster object. For example, to con gure a new cluster named
Production
with HA enabled and an HA failover level of 1 physical host failure and the HA
Restart Priority as Medium, you would use the code in Listing 1.8.
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