Using ESX 4.0, with a Promise iSCSI external storage shelf. One VM uses this storage rather than local storage within the ESX server. After rebooting the ESX server last night, this one VM that uses the iSCSI storage now shows Unknown (inaccessible) in the VI client console. Looking in storage console, I can confirm that the iSCSI storage is no longer listed. I'm guessing that maybe this is just an issue with a service not starting on the ESX server, but I don't know how to troubleshoot this.
Thanks for any suggestions