Create SetClusterMultiPathToRoundRobin.ps1

Scripts/SetClusterMultiPathToRoundRobin.ps1

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+<#
+ Script name: SetClusterMultiPathToRoundRobin.ps1
+ Created on: 09/14/2017
+ Author: Alan Comstock, @Mr_Uptime
+ Description: Set the MultiPath policy for FC devices to RoundRobin for all hosts in a cluster.
+ Dependencies: None known
+ PowerCLI Version: VMware PowerCLI 6.5 Release 1 build 4624819
+ PowerShell Version: 5.1.14393.1532
+ OS Version: Windows 10
+#>
+
+#Check for any Fibre Channel devices that are not set to Round Robin in a cluster.
+#Get-Cluster -Name CLUSTERNAME | Get-VMhost | Get-VMHostHba -Type "FibreChannel" | Get-ScsiLun -LunType disk | Where { $_.MultipathPolicy -notlike "RoundRobin" } | Select CanonicalName,MultipathPolicy
+
+#Set the Multipathing Policy to Round Robin for any Fibre Channel devices that are not Round Robin in a cluster
+$cluster = Get-Cluster CLUSTERNAME
+$hostlist = Get-VMHost -Location $cluster | Sort Name
+$TotalHostCount = $hostlist.count
+$hostincrement = 0
+while ($hostincrement -lt $TotalHostCount){		#Host Loop
+	$currenthost = $hostlist[$hostincrement].Name
+	Write-Host "Working on" $currenthost
+	$scsilun = Get-VMhost $currenthost | Get-VMHostHba -Type "FibreChannel" | Get-ScsiLun -LunType disk | Where { $_.MultipathPolicy -notlike "RoundRobin" }
+	if ($scsilun -ne $null){
+		Set-ScsiLun -ScsiLun $scsilun -MultipathPolicy RoundRobin	
+	}
+	$hostincrement++	#bump the host increment
+}
+#The End