Re: SCSI Tape Drive Problems

2006-12-27 Thread Mark Kane
On Wed, Dec 20, 2006, at 11:14:57 -0600, Dan Nelson wrote: In the last episode (Dec 20), Mark Kane said: Thanks very much for the replies. Both drives are external, and they both have terminators on the back. The setup is like this: The DDS autoloader is connected to the back of the

Re: SCSI Tape Drive Problems

2006-12-20 Thread Mark Kane
On Tue, Dec 19, 2006, at 23:16:45 -0600, Dan Nelson wrote: Timeouts and unexpected busfree errors like these are indicative of cabling or termination problems. I don't think DLTs auto-terminate, for example, so try putting an external terminator on the 2nd plug on the back of the unit (or if

Re: SCSI Tape Drive Problems

2006-12-20 Thread Derek Ragona
You can get ringing on a SCSI device from bad or loose cabling which will generate a lot of SCSI errors. There are limits to cable lengths and you need to be sure you use proper cables for every device (and rated for the SCSI bus speed.) You will do best to pull out any un-necessary

Re: SCSI Tape Drive Problems

2006-12-20 Thread Dan Nelson
In the last episode (Dec 20), Mark Kane said: On Tue, Dec 19, 2006, at 23:16:45 -0600, Dan Nelson wrote: Timeouts and unexpected busfree errors like these are indicative of cabling or termination problems. I don't think DLTs auto-terminate, for example, so try putting an external

Re: SCSI Tape Drive Problems

2006-12-19 Thread Dan Nelson
In the last episode (Dec 19), Mark Kane said: Hi everyone. I'm experiencing some problems with two tape drives attached to this machine. Here is the situation: I then tried backing up the same 17GB directory to a Sun DLT 4000 single tape unit with a 20GB/40GB tape using cpio. It wrote about

Re: SCSI Tape Drive Problems

2006-12-19 Thread Ted Mittelstaedt
That's hardware, most likely scsi termination issues or cabling issues. I have seen these errors lots of times when using a high speed scsi controller on a tape drive. Sometimes you can play with the settings on the controller or flip switches on the drive to get things to work, sometimes you