# Find offline Disk.
Get-Disk | Where-Object IsOffline -Eq $True
# Online Disk.
Get-Disk | Where-Object IsOffline -Eq $True | Set-Disk -IsOffline $False

# Initial Disk.
Initialize-Disk 1 -PartitionStyle GPT
# Format Disk.
New-Partition -DiskNumber 1 -UseMaximumSize | Format-Volume -FileSystem NTFS

# Add CLuster CSV.
Get-Disk -Number 1 | Add-ClusterDisk 
Get-ClusterResource | ? OwnerGroup -eq "Available Storage" | Add-ClusterSharedVolume