Windows servers unable to see disks/LUNs post ONTAP upgrade Last updated Save as PDF Share Share Tweet Share Views:109Visibility:PublicVotes:0Category:ontap-9Specialty:sanLast Updated: Applies to ONTAP upgrade from 9.5 to 9.7P14 SAN Configurations Windows servers Issue Following an ONTAP upgrade from 9.5 to 9.7, LUNs went missing from Windows hosts causing an outage.