Getting an ST-225 disk to work

Thank you for the information. It confirms what I expected. It certainly is much easier to have 2, 3 and even 4 hard drives. I just looked at my BA123 which I rarely use these days. It has an RQDX3 and an RQDX2 so that I can transfer files between drives which have the different formats. This saved making a copy to a tape first, then formatting the drive and making a copy back. I continued to use the RD53 drives for a while to perform benchmarks during the 1990s. The RD53 drive was about 25% slower than an EDSI drive like the Maxstor 8760E or the Hitachi DK515. SCSI drives were about the same speed as the ESDI drives when used with the CMD host adapters. At this point, RD53 drives should not be used except for scratch. Rarely, I hear of an RD53 that still works unless the sticky bumper has been removed. IN FACT, there are actually 5 switch panels on that BA123 with a blank space for an additional switch panel which only needs the hole cut and a place for the bolt used to anchor the switch panel. So assuming that I attached an RX50 dual drive to the RQDX2, that would be sufficient switch panels to support both the RQDX3 with 4 hard drives and the RQDX2 with 2 hard drives and the dual RX50 drive. It is probably not going to happen at this point, but back when I used that box quite a bit, it would have been useful. Jerome Fine