ONTAP SAN Citrix outage during ONTAP upgrade or takeover Last updated Save as PDF Share Share Tweet Share Views:197Visibility:PublicVotes:0Category:aff-seriesSpecialty:sanLast Updated: Applies to ONTAP 9 Citrix XenServer 8.4 Issue During an ONTAP upgrade with takeover / giveback Citrix servers experience IO errors and what appears to be a loss of LUN access