>>>>> On Mon, 11 Apr 2005 14:23:04 +0100 (BST), Alan Brown <[EMAIL PROTECTED]> 
>>>>> said:

  Alan> On Mon, 11 Apr 2005 [EMAIL PROTECTED] wrote:

  >> I had the same issue on my old debian box. It was always just writing
  >> around 33GB on the tape, never more.The data I try to backup are alot of 
Word-Documents and all different kind
  >> of sourcecode. So there should be at least some compression.
  >> I might try the software compression from bacula and see if that helps.
  >> But if you have some idea what else I could test I would be very glad.

  Alan> If you have the space, make a .tar of your expected backup stuff and 
then 
  Alan> gzip it. this will give you an indication of the kind of compression 
  Alan> ratios you might expect.

I'm not sure what kind of compression DAT72 uses, but for DDS4 the compress
program will give a closer idea of the hardware compression than gzip (i.e. it
expands random/compressed data by 20%!).

__Martin


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