Rescan all nodes of the cluster to find new SAN disk – PowerShell

Setup: A Windows cluster who was added a new SAN disk.

Problem: Sometimes you need to scan each node for new disks in order to be able to add the disk in the cluster.

Solution:

$cluNode = "Node1"  # enter the name of one node of the cluster
write-host Rescan all nodes for new disks
$allnodes = gwmi -ComputerName $cluNode MSCluster_node -Namespace "root\MSCluster" -Authentication PacketPrivacy -Impersonation Impersonate | select name
$allnodes|%{Invoke-Command  -computername $_.name  -scriptblock { & echo "rescan" | diskpart | out-null }}