PowerCLI: Get-View samples for discovering VM to VMFS to LUN NAA mappings...

vm-vmfs-lun-sample.ps1

# you must connect and authenticate to a vCenter server
# use Connect-VIServer to do so
 
# establish Export file name
$csvname = Read-Host 'Please provide the file path and name for your CSV export'

# Use Get-View, and filter by datastore type, then
# select specific properties and export to CSV
Get-View -ViewType datastore |Select-Object name,@{n='NAA';e={$_.info.vmfs.extent.diskname}} |Sort-Object name | Export-Csv $csvname

# establish Export file name
$csvname = Read-Host 'Please provide the file path and name for your CSV export'

# Use Get-View, and filter by virtual machine type, then
# select specific properties and export to CSV
Get-View -ViewType virtualmachine |Select-Object name,@{n="disk layout";e={$_.layoutex.file.name}},@{n="VMDK Size";e={$_.layoutex.file.size}} |Sort-Object name | Export-Csv $csvname