VM's stop responding after migrating to HPVSA Storage.

Hello Everyone,

Recently, we upgraded ESXi 6.5 and we migrated VM's to remote site HP VSA storage ( HP VSAN) but after migrating the VM's it works well for few hours then the VM's stop responding

and no RDP. Even storage disconnects.  Looking for help. Even we opened SR with VMware and they recommended to upgrade Phyical NIC driver but it didnt helped.

Initially, we were assuming that there were ISCSI configurations issues.

Thanks

vmk