Messages in this thread | | | Date | Tue, 19 Nov 1996 20:08:34 -0600 (CST) | From | Jay Nelson <> | Subject | Re: EIDE more reliable than SCSI? |
| |
Interesting question. I learned a long time ago -- about 1.2.28 (a.out) that IDE and SCSI didn't mix well -- particularly with a tape drive on the SCSI bus. Is that because tapes can't disconnect/reconnect? Can your CD writer? Or is it an INT 13 problem?
My problem was always on _reads_ from the tape and a hard reset was generally the solution. I would _really_ appreciate someone explaining how IDE, EIDE and SCSI can or can't work together.
Is tagged queueing part of the problem? (Free BSD, doesn't support it, I think, and I had the same problem with it -- except it trashed the disk.)
-- Jay
On Mon, 18 Nov 1996, Hubert Mantel wrote:
-> ->Hello, -> ->we used the following system for writing CDs: -> ->P100 with 32MB RAM, an EIDE hard drive and a 4x speed Yamaha CD-ROM writer ->with 8MB connected to a NCR53C810 SCSI adaptor. The system was very ->stable. We could compile a kernel, transfer another iso9660-image over the ->100MB net and write a CD at 4x speed without any problems. All ->simultanously. -> ->Then the harddisk died and we modified the system. Now it's a P133 with ->32MB, and we replaced the disk with a SCSI disk connected to the same NCR ->controller to which the writer is connected. Lots of problems when writing ->CDs. So we inserted a second SCSI Adapter (DPT) and attached the hard disk ->to it. But still we may not "touch" the machine whilst writing a CD. There ->is only one device attached to every of the both SCSI adaptors! Besides of ->that, the system is absolutely reliable and rock solid even under highest ->loads. -> ->Why is writing from an EIDE disk to the SCSI writer so much more reliable ->than writing from a SCSI disk to the writer? Any hints? -> -> Hubert mantel@suse.de -> ->Oh, almost forgot: Kernel is 2.0.25 of course ;-) Same software on both ->systems. ->
------------------------------------------------------ We are condemned to repeat history when we don't learn because those who learn from history repeat it.
| |