Hi, all. I have one question regarding using old 73 GB disks.

We have CX4-480 with 7 300GB/15k/FC disks and old CX300 with 15 73GB/15k/ FC disks which we would like to used under CX4 for backups or so. How would it be possible to use those disks ? We tried to install them (same DAE) but the 73 GB disk ended in "requested bypass" state and CX4 never recognized it. I understand that CX4 should automatically downgrade its BE speed from 4 Gb to 2Gb. Is it any other possibility to use old disks ? Aprreciate your answers and opinions.