I am wanting to add additional storage to a Dell PE 1600 SC. I believe I can add an additional RAID controller and be fine. However, I attempted this about a month ago and had a heck of a time. I had a failing HD (1 of 2) on the existing RAID 1, which I am pretty sure contributed to my woes in attempting the new RAID controller install. This server is a secondary DC running at a remote site. It is running Windows Server 2003. I was able to boot into the new RAID controller's BIOS and set the parameters on the first boot after physical installation of the card and HD's. However, when I booted into the OS, the server crashed and AD was corrupted. After working on the server for an hour or so, I replaced the failed HD in the existing RAID with one of the ones I was going to use for the new RAID. I removed the new RAID controller card and she booted, rebuilt the existing RAID and everything has been fine since. However, I am needing to attempt this install again as the server is in desperate need of storage space. Does anyone know of the exact procedure needed to keep from having problems with this install? I believe I have the right hardware for the install and am aware of the boot sequence that needs to be addressed in the BIOS settings after the hardware is installed and configured. Is there anything else that might make this task easy-peasy with no issues?