I am seeing this events on the logs for one of our ESXI servers, its running ESXI 5.5.0 build 2068190.
The only way to restore access to the VM is to restart the server. (Server is a Cisco UCSC-C220-M3S) Server is currently only running 1 VM.
Running a LSI MegaRAID SAS Fusion Controller
Lost access to volume
52fa9798-2f07f05f-c1f7-b0faeb97d646
(datastore1) due to connectivity issues. Recovery
attempt is in progress and outcome will be
reported shortly.
info
5/20/2014 2:22:26 PM
datastore1
Logging to storage has failed. Logs are no longer
being stored locally on this host.
error
5/20/2014 2:17:40 PM
- localhost.localdomain
Device
- naa.600605b005dc2e401a8d4d151c7504c2
performance has deteriorated. I/O latency
increased from average value of 1133
microseconds to 34075 microseconds.
warning
5/15/2014 9:46:53 PM
- localhost.localdomain