I've got an ancient Dell server with 4 disks in RAID 5. One has become faulty and needs to be replaced. I ordered an identical model drive but when it arrived it is slightly smaller. The RAID controller of course doesn't like that and is refusing to rebuild because it is a smaller drive. They're both Seagate ST3600057SS drives, with the 3 old ones clocking in at 572325 MB and the new one at 560208 MB.
Do I have any options here aside from getting yet another drive?