That's what I had figured, you can't compress compressed data, I wonder
does this have any performance affect though?

At 08:32 AM 4/1/2004, Steve Hindmarsh wrote:

Hi Rob,

The tape capacity figures are based on what is actually written to tape
- what the drive 'sees' if you like. As you are feeding the tape drive
pre-compressed data from the clients it can't compress it any further.
If you turned off client compression you would see around 320GB being
written to each tape (depending on the data). We have a SDLT320 system
and I have done exactly that.

Cheers,
Steve Hindmarsh

>>> robm AT LL.MIT DOT EDU 01/04/2004 13:58:14 >>>
Another random thought.. or stupid question, but I don't know the
answer so
it bugs me.  I have SDLT320 drives in my libraries.  I have the clients
set
to use compression and my tapes all say full at or around 160Gb.  I
was
under the impression that the drives should be 320Gb compressed.  Am I
missing something here?

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