Migrate the workload and power cycle the host. After power cycle of the host, collect the vm-support along with driver/firmware logs. These issues are seen due to faulty hardware or firmware bugs. The customer needs to open a case with the hardware vendor by collecting the hardware ( storcli and/or sascli logs) logs.
As of ESXi versions - 7.0U3, the disk/diskgroup is set to offline state in case of stuck IO. In previous ESX versions before 70U3 and in 6.7 version (67U3 onwards), the host is PSODed to ensure that it doesn't affect other hosts on the cluster.