On Mon, Jul 5, 2010 at 1:23 AM, Marc Muehlfeld <[email protected]> wrote: > I'm using amanda 2.6.1p2 and I'm wondering, why my vtapes are allways filled > up to 100%, while LTO3 tapes are not:
vtapes size themselves to precisely LENGTH bytes, whereas tape capacity can vary based on tape stretch, error rate, compression rate, etc. Given that your numbers are all within half a factor of 2 of 50%, I would guess that compression is on on your drive, but you've put the uncompressed length in your tapetype. This is fine, but I would suggest setting the tapetype parameter to something around 180GB, so that Amanda doesn't expect to put much more than that on a tape. Or turn off compression. Dustin -- Open Source Storage Engineer http://www.zmanda.com
