[I hope it's alright to post this in here, seemed to be the most appropriate forum type]
I just added an internal Sony CDU-561-25 SCSI drive to a Quadra 950. I have it jumpered to be on ID 2 as per the attached configuration (or so I thought, keep on reading). It's in the middle of a 4-connector SCSI cable on the same bus as a SCSI2SD. The latter has 4 devices with IDs 0 (boot "drive"), 3, 4 and 5 (they used to be 0, 1, 2, 3 but that collided with the CD drive and caused the ? to flash on startup), so I was hoping for the CD drive to show up as 2 and I'll still have access to the 3 other additional SCSI2SD devices for more storage.
Now when I list the devices on the SCSI bus, I see the startup disk as ID 0, nothing on 1 & 2, 4 is the CD-Rom drive and 3 & 5 are two more of the SCSI2SD storage devices. NR 4 vanished, or rather seems to have been replaced with the CD-drive as a device.
I've seen in jumper diagrams for a slightly newer model (625) that apparently these support setting all 7 IDs using none, one or two jumpers, and that table suggests that setting one jumper to 2 actually translates to ID 4. And indeed when I set the jumper to ID 1, it shows up as ID 2 and my previously missing SCSI2SD device 4 shows up again.
Can anyone familiar with this model confirm that this is the intended behaviour? What an odd and non intuitive way (if you don't have the documentation at hand
or never really worked with SCSI devices much before) to configure the IDs. I sometimes don't even know how I put up with the simple IDE jumper configs of yesteryear when they were still a thing ...
Thank you!
I just added an internal Sony CDU-561-25 SCSI drive to a Quadra 950. I have it jumpered to be on ID 2 as per the attached configuration (or so I thought, keep on reading). It's in the middle of a 4-connector SCSI cable on the same bus as a SCSI2SD. The latter has 4 devices with IDs 0 (boot "drive"), 3, 4 and 5 (they used to be 0, 1, 2, 3 but that collided with the CD drive and caused the ? to flash on startup), so I was hoping for the CD drive to show up as 2 and I'll still have access to the 3 other additional SCSI2SD devices for more storage.
Now when I list the devices on the SCSI bus, I see the startup disk as ID 0, nothing on 1 & 2, 4 is the CD-Rom drive and 3 & 5 are two more of the SCSI2SD storage devices. NR 4 vanished, or rather seems to have been replaced with the CD-drive as a device.
I've seen in jumper diagrams for a slightly newer model (625) that apparently these support setting all 7 IDs using none, one or two jumpers, and that table suggests that setting one jumper to 2 actually translates to ID 4. And indeed when I set the jumper to ID 1, it shows up as ID 2 and my previously missing SCSI2SD device 4 shows up again.
Can anyone familiar with this model confirm that this is the intended behaviour? What an odd and non intuitive way (if you don't have the documentation at hand
or never really worked with SCSI devices much before) to configure the IDs. I sometimes don't even know how I put up with the simple IDE jumper configs of yesteryear when they were still a thing ...Thank you!
