I'm having a serious issue with ESXi 4. I have had ESXi 4 running successfully for a couple of months now, with x2 Server 2003 VM's (Currently installed on an HP ML150G6 server - Intel E5520 CPU, 4GB RAM, x4 250GB HDD's in a RAID-5 configuration, setup using the default Smart Array P410 RAID controller that came with the server bundle).
The issue is that the Server has been running fine up until this morning - After noticing that our mail/file/print server was not working, I had attempted to logon to the server via the vsphere client - no go. Attempted a ping - no go (Tried pinging both the Server IP and the VM IP's). So I thought that I'd give the server a restart (the restart took quite a long time to accomplish approx 15 - 20 minutes). After restarting the server went through POST fine, but when it came time to load the ESXi hypervisor an error showed up saying "boot failed! please enter proper boot device - then restart!).
Could this be that the boot configuration file for the ESXi hypervisor is somewhat corrupt? Has anyone been through a similar situation before? If so how did you manage to fix this annoying issue. Any help will be greatly appreciated.