Harddisks not correctly recognized at Serveraid 7k


I got an IBM eServer and a Serveraid 7K Raid-Controller. The Server has 6 Hot-Swap-U320-SCSI-Bays. ID 0-4 are harddisks with 146 Gig as a Raid 5, working fine.

Now I got 2 (used) additional harddisks, but they are not correctly recognized: The Administration Software reports no Model No etc. and a size of 0. So I cant do anything with these…

The bays work, when I swap drives and put a working drive in ID 5 or 6 its correctly recognized.

I searched for something to low-level-format the new drives but cant find such an option in the Bios or in the Administration Software.

Any ideas what I could do?