Using the DRS affinity and anti-affinity rules

In this section, we will discuss the advanced settings of a cluster. We can use the following cmdlets for this section:

• Get-DrsRule

• New-DrsRule

• Remove-DrsRule

• Set-DrsRule

First, we will create a new anti-affinity rule with the two Test1 and Test2 VMs that we created for this purpose. We want to always keep them separate in such a way that they will not run on a single host at any point of time. For this, we will use the New-DrsRule cmdlet to create a rule. We will use the following command for this:

PS C:\> New-DrsRule –Cluster 'Lab Cluster' –Name `  antiAffinityTest1 -KeepTogether $false –VM Test1, Test2

The result of the preceding command is shown in the following screenshot:

Note the warning about the Cluster parameter. This warning is displayed to show you that this parameter is obsolete and should be avoided. We can check the details of the rule using the Get-DrsRule cmdlet.

We can change a rule using the Set-DrsRule cmdlet. In the...