On Wed, Jan 22, 2003 at 01:55:32PM -0500, Gene Heskett wrote: > On Wednesday 22 January 2003 09:05, hochenaw wrote: > >we have an HP Surestore dlt vs80e and use hp dlt IV tapes (capacity > >40/80GB) under linux. ...
> >How can i activate software or hardware compression (cant find an > >entry in amanda.conf, just Client or Servers best in dumptypes-file)? > > Hardware depends on the os in use. Some os's have a choice of > compressed or uncompressed drives in the device list and will turn the > drives compression on and off according to the devicename you used to > address it. Linux does not however, so one must find the switch > setting on the drive itself that turns this on/off. ... > Off is the generally recommended hardware setting for use with amanda > because if the machines have the horsepower to do their own > compressing, they can often beat the hardware compression by quite > useable amounts, thereby putting more on the tape than the hardware > compressor can. ... I use this in my /etc/modules.conf on Linux: post-install st mt datcomp off Which uses mt to switch off compression every time the module loader autoloads the scsi tape driver. -- Ah, young webmaster... Java leads to Shockwave. Shockwave leads to Realaudio. And Realaudio leads to suffering. -- Peter da Silva