Virtual machine lost datastore access.
There is an issue with storage connectivity. Review the event description for detail on the cause.
Check for network and storage issues. Review VMware online documents such as Troubleshooting VMware High Availability, vSphere Troubleshooting Guide and vSphere HA and FT Error Messages (1033634) KB article to resolve FT issues.
Refer to the online vSphere Availability Guide for further guidance.