Tape Troubles
Ken Terrell
I have a SCSI tape Backup (a Tandberg TDC4200) connected to a DTC3280
controller. I want to backup my whole network using this drive. My
problems are:
1. This thing is a lot slower than I think it should be. using dump or
tar, I only get about 75Kbps. Should I get faster writes than this?
2. The system slows WAY down. It only runs about 50-75%% cpu usage, but is
very unresponsive. I don't think it should be like this. I have tried
Dump, tar, cat etc. to write data to the tape, and they all load the
system down.
3. I can't get a reliable backup. I think I need to get the correct
command line params for Dump, but haven't been able to find the specs for a
DT4000 tape. If anyone has them, PLEASE send them, I'm begging.
I want to blame #1 and #2 on some sort of interrupt or DMA problem, but I
am at a loss to figure it out.
If anyone can help, please do so.
System info.
Cyrix 6x86, 48Meg Ram
on-board IDE bus
on-board floppy
dtc3280 SCSI controller with floppy disabled. all default jumpers. IRQ=11,
address = D800 etc.
TDC4220 Tape with terminators installed - double checked.
8.4 Gig IDE HD
SoundBlaster 16 - yep, an original.
Diamond Stealth 3D 2000
RedHat 6.1 installed
Ken
Sorry, I don't think that this is the right group to post in, but I
couldn't find anything better.
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The world is moving so fast these days that the man who says it can't be
done is generally interrupted by someone doing it.
-- E. Hubbard
Visit http://Ken.Terrell.net
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