com.vmware.vc.host.problem.vFlashResource.inaccessible
Summary
Hosts' vSphere Flash resource is inaccessible.
Causes
vCenter Server was unable to connect to the Virtual Flash resource on the host for a long period of time.
Resolution
Ensure that the Virtual Flash resource is set up in a proper way. See this VMware KB article on Virtual Flash to resolve issues.
External
Refer to this VMware KB article for more information about the virtual flash resource.