I just got a PowerEdge 2850 off eBay. All appears to be in excellent condition, the machine has 6 drives in it, all drives have green lights lit with power on. The problem is that only the first two disks appear in the Perc setup utility at boot-time. Do I have to change any controller settings to get the other disks to appear, or do I most likely have a bad backplane? I have tried replacing the four disks that do not appear with other drives, to no avail. I only see Drives 0 and 1. Any input and help would be greatly appreciated! Thanks!