Permanent Device Loss (PDL) and All-Paths-Down (APD) in vSphere 5.x

Symptoms Permanent Device Loss (PDL) A datastore is shown as unavailable in the Storage view. A storage adapter indicates the Operational State of the device as Lost Communication. All paths to the device are marked as Dead. TheĀ /var/log/vmkernel.logĀ file shows messages similar to: cpu2:853571)VMW_SATP_ALUA: satp_alua_issueCommandOnPath:661: Path “vmhba3:C0:T0:L0” (PERM LOSS) command 0xa3 failed with status Device is […]