esx.problem.scsi.device.state.permanentloss.pluggedback
Summary
Device has been plugged back in after being marked permanently inaccessible. No data consistency guarantees.
Causes
Host has detected a storage device that has been marked inaccessible.
Resolutions
For more information, see this VMware KB article.
External
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.