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    • https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/How_to_troubleshoot_NFS_APD_issues_on_VMware_ESXi
      An all paths down (APD) timer is started when there has been a 5 second period with no communcation on any given TCP stream After 140 seconds of being in this state, the connection is considered lost ...An all paths down (APD) timer is started when there has been a 5 second period with no communcation on any given TCP stream After 140 seconds of being in this state, the connection is considered lost and an APD timeout is reached YYYY-MM-DD T00:26:51.504Z: [APDCorrelator] xxxxxxxxxxxxxus: [esx.problem.storage.apd.timeout] Device or filesystem with identifier [xxxxxxxx-xxxxxxxx] has entered the All Paths Down Timeout state after being in the All Paths Down state for 140 seconds.
    • https://kb.netapp.com/on-prem/ontap/ontap-select/Select-KBs/ONTAP_Select__frequent_reboots_due_to_APD
      Applies to NetApp ONTAP Select (OTS) VMware HPE ProLiant DL360 Gen10 Issue OTS VM frequently reboots due to network partitioning. Giveback is only possible after the ESXi host is rebooted.
    • https://kb.netapp.com/on-prem/E-Series/Hardware-KBs/E-Series_extreme_performance_degradation__with_timeouts_on_ATS_operations_with_large_VMware_clusters
      Applies to NetApp E-Series E2600 E2700 E2800 & EF280 E5400 & EF540 E5500 & EF550 E5600 & EF560 E5700 & EF570 VMware Cluster VMware vSphere VMware ESXi 6.0 (Update 3) Issue In large VMware clusters usi...Applies to NetApp E-Series E2600 E2700 E2800 & EF280 E5400 & EF540 E5500 & EF550 E5600 & EF560 E5700 & EF570 VMware Cluster VMware vSphere VMware ESXi 6.0 (Update 3) Issue In large VMware clusters using E-Series controllers with firmware SANtricity OS 11.40R1 or 8.40.00.01 May experience performance degradation Virtual servers may randomly reboot VMware may report Timeouts with ATS operations Reservation conflicts messages