First; be extremely careful on how to proceed from here. If you know exactly which order this person removed the drives (which got pulled first and which got pulled second), you'd want to remove the one that got pulled first and then try to force the virtual disk online in the PERC bios. At this point you try to boot into the OS. If you can get in, use omsa to check the raid status and re-insert the other disk to see if it will start a rebuild. You may also want to open a support case with PowerEdge support to have them do a best-effort assistance to see what can be recovered.
I had a Raid-5 consisted w/ 5 HDDs (plus 1 HS) on a PE2900. Last night some smart guy went to the server to demonstrate "hot swap thingy" and removed & reinserted two HDDs of those 5. As a result this morning I'm staring at an unbootable system since of course in bios the Raid Status's OFFLINE, with two lovely "missing" PD in the VD and them being Foreign devices. I know the Raid-5's fine w/ ONE device went AWOL but that smart ass has to demonstrate on two of them....so,my question is,   is there any chance to save the VD? (I know you can add PD to an array w/ PERC4 but apparently its gone from PERC5...)
Need help on 2900/PERC 5 Raid-5 mistake