On Wed, Aug 30, 2017 at 11:54 AM, Paul Groves <paul.groves.787@gmail.com> wrote:
so the remaining puzzle is: why won't the LTO 4 drives work with my expensive Antec Server PSU but they do work with a £7.50 cheapo unbranded chinese supply? And also why do all my other tape drives work fine with the Antec PSU? Is it a problem with the model (HP 1760 SCSI)? But they work fine on another PSU so the LTO4 drives cannot be at fault can they?
Anyone have a clue how to proceed?
Paul, It was me suggesting ground/power issues, so I'm not shocked at your finding. Are you using SE signalling or differential on your SCSI cable? On setups with numerous SCSI tape drives I used differential. If you do that you can power the drives from a totally different PSU. I personally have never put more than 1 SE tape drive on a SCSI cable. Purely by chance, whenever I had numerous SCSI tape drives hooked up, I put the drives in external enclosures with their own PSU and used differential signaling. That doesn't tell you why your drives are incompatible with your PSU, but if you're simply tired of messing with it, it may give you a way forward. Good Luck, Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org