StarWind Virtual SAN (VSAN) [+Free], HCI Appliance (HCA), Virtual HCI Appliance (VHCA) [+Free] • Setting MPIO to Failover for Witness else LQD via PowerShell

Code:

# Convert to Hash: MPIO Disk Info $disks_MPIO = (gwmi -Namespace root\wmi -Class mpio_disk_info).driveinfo | Group-Object SerialNumber -AsHashTable -AsString$disks_starwind = Get-PhysicalDisk | Where FriendlyName -like "*Starwind*" |  Select-Object Friendlyname, UniqueID, @{Name='MPIO Name'; Expression={ ($disks_MPIO[$_.UniqueID]).Name }} | Format-Table -AutoSize$disks_Serial_vs_ISCSI = Get-IscsiConnection | Select -Property InitiatorAddress,TargetAddress,@{Name='Session'; Expression={($_|Get-IscsiSession).TargetNodeAddress}},@{Name='DiskSerial'; Expression={($_|Get-Disk).SerialNumber}} | Group-Object -Property DiskSerial # Output For Review Write-Output ($disks_Serial_vs_ISCSI | Select -ExpandProperty Group )$disks_Serial_vs_MPIO = @()foreach($currDisk in $disks_Serial_vs_ISCSI){        $countIsWitness = 0    foreach($currISCSI_Target in $currDisk.Group){                If($currISCSI_Target.Session -like "*witness*"){            ++$countIsWitness         }     }    $disks_Serial_vs_MPIO += [pscustomobject]@{        DiskSerial     = $currDisk.Name         MPIO_Required  = If($countIsWitness -gt 0){"FOO"}Else{"LQD"}                MPIO_DiskNb    = ($disks_MPIO[$currDisk.Name]).Name.Replace("MPIO Disk","")        ISCSI_IQN      = $currISCSI_Target.Session     }}# For Review Write-Output $disks_Serial_vs_MPIO# Before Changes & mpclaim -s -dforeach($currDisk in $disks_Serial_vs_MPIO){    $ArgumentList = ""    If($currDisk.MPIO_Required -eq "FOO"){        $ArgumentList = "-l -d " + $currDisk.MPIO_DiskNb + " 1”    } Else {        $ArgumentList = "-l -d " + $currDisk.MPIO_DiskNb + " 4”            #mpclaim /?            #0 = Clear the Policy            #1 = Fail-Over Only            #2 = Round Robin            #3 = Round Robin with Subset            #4 = Least Queue Depth            #5 = Weighted Paths            #6 = Least Blocks            #7 = Vendor-Specific    }    Write-Output ("To set MPIO Load Balance Policy")    Write-Output ("`t  TO: " + $currDisk.MPIO_Required)    Write-Output ("`t FOR: " + $currDisk.ISCSI_IQN)    Write-Output ("`t RUN: " + "mpclaim $ArgumentList")    #start-process “c:\windows\system32\mpclaim.exe” -ArgumentList $ArgumentList -Wait    }# After Changes & mpclaim -s -d