sorry - I was out at the physio and then to dinner, so I didnt get a chance to follow up - iirc, Perc 3/DI is 'Integrated/Internal', 3/DE is 'External' (To The Motherboard) So, the 3/DI Could be disabled (reboot the system, watch the prompts and it should tell you which keys to get into the controller), and a replacment put in - Dell used to use some other brand or make American Megatrends Cards avail on request - these were slightly better becuase they had a Recover Config option. As Jörgen Andersson points out, I think your best bet is still with Dell to start with - Dell have been pretty good to us in the past, (ok, the scale is different, we are a large corporate), but even if you get a replacement motherboard, it would be interesting to copy the raid config without their help (I cant remember how it works/where its stored) If you could lay your hands on another P/E 4600 with motherboard, memory, but no DASD/Disk, you might be able to set it up as per your current system, then move your DASD/Disks across to it At least you have backups, it really depends on what hardware you can lay your hands on - I dont think its a total loss yet. Last of all, I hate to be a p.i.t.a. - keep your maintenance up to date - it might be $$ xyz per year, but how much is this exercise going to cost you in lost productivity, or worse (hopefully not) lost data 'g'