Martin - Thank you for the detailed response.One last question before I take the plunge and install a new OS, am I correct in that the C100 has the following expansion slots:  - 1ea. PCI Express x8 slot  - 1ea. PCI-X 64-bit/133MHz slotThe reason I as...

Is there a p/n for a CD/DVD of the AsyncOS operating system that can be used to restore the shipping functional image so that I can reinstall the OS and get this beast back up and running?

Thanks TzeTaiMak!Is it not possible to order a preloaded replacement 80gb HDD from IronPort/Cisco, install the replacement preloaded HDD as SATA-0, then have it rebuild one of the two freshly wiped drives installed in the SATA-1 slot as in Raid-1/Mir...