It is an Adaptec 2120S controller. I found my way into the RAID BIOS, and it appears drive 04 is bad (physical number in the chassis is 5). It also appears to be a 6 disk RAID set, not 5, but I'm not 100% certain on this. I am guessing this drive went down though, so I'm running on 5 drives instead of 6. I ordered 2 new drives, which will be in today, but not certain how to rebuild the new drive set. The BIOS only has 4 options, so it's fairly simple to navigate. Three of the options do not appear to be useful in a rebuild. I'm guessing the option to "initialize a drive" is where the rebuilding will take place. I've never done this before though, so I'm not sure what to expect once I go into the option. I haven't been in there yet. The Adaptec Manager you gave me the link to was already installed, but it was renamed as the HP Manager. I need to uninstall both now and reinstall the ap, because it did create a slight conflict. The manager actually gives very little assistance in determining which drive is bad unfortunately. This is where the error is shown, but it only tells me the set is degraded without telling which drive in the set went down. It does however, list all the good drives, so only 5 show up in the utility with no errors, and the 6th is not present with or without error. The RAID set is shown as drive 0, 1, 2, 3, 5. If another drives goes, it will be a complete system crash as near as I can tell.
