HPE 3PAR OS updates that fix VMware VAAI ATS Heartbeat issue
Customers that use HPE 3PAR StoreServs with 3PAR OS 3.2.1 or 3.2.2 and VMware ESXi 5.5 U2 or later, might notice one or more of the following symptoms:
hosts lose connectivity to a VMFS5 datastore hosts disconnect from the vCenter VMs hang during I/O operations you see the messages like these in the vobd.log or vCenter Events tab Lost access to volume due to connectivity issues. Recovery attempt is in progress and the outcome will be reported shortly