PowerCLI: script to map VMFS datastore (block only) to underlying LUN using NAA ID

VMFS-to-LUN-NAA.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'

# Gather information on all datastores in the vCenter and enter a loop
get-datastore |foreach-object {

# Capture the name of the datastore in a variable
$ds=$_.Name

# For each datastore, get teh information on the SCSI LUN, 
# select specific properties and export it all to the CSV file

# note - the "gu" command is shorthand for "get-unique" - 
# this is necessary as datastores will be reported by multiple virtual machines

get-scsilun -datastore $ds | Select-Object @{n='NAA';e={$_.canonicalname}}, @{n='Datastore Name';e={$ds}} | gu | Export-CSV "c:\users\rfw614\Desktop\scsilun.csv” -NoTypeInformation –Append
}