* [EMAIL PROTECTED] <[EMAIL PROTECTED]> (Wed, Nov 20, 2002 at 02:13:08PM +0100)
> Hello,
>
> I have got here a DDS-3 tape drive which has per default hardware
> compression enabled and was wondering what is the best deal with AMANDA.
> Would you guys suggest hardware compression or should I disable hardware
> compression and have software compression done for example with gzip ?
It;'s a trade off:
Software compression gives better compression, but btakes CPU cycles .
If your machine can spare a lot of cpu cycles, use software compression, if
it is low on CPU cycles, do not.
Another big (and I mean big) benefit of software compression is that amanda
is much better capable of estimating how much data will fit on a tape.
And finally, while tape vendors usually claim a 2:1 compression, reality
shows it's more like 1:1.5 (unless you are working with large volumes of
seismic data, in which case the ratio drops to 1:0.95
(in other words, compressed data actually takes more tape then
uncompressed).
Currently listening to: Roger Waters - 5.01 AM (The Pros and Cons of Hitch Hiking)
Gerhard, <@jasongeo.com> == The Acoustic Motorbiker ==
--
__O "Wenn ist das Nunstuck git und Slotermeyer?
=`\<, Ja !
(=)/(=) Beiherhund das Oder die Flipperwaldt gersput!"
