We have a Solaris E250 amanda server backing up two T1000 servers,
also Solaris, hosting Lotus Notes.

Over time, we decided on HW compression, runs where long but they
completed pretty reliably at the same time every day.

We tried an experiment, since we hadn't really tried SW compression
since we upgraded the client systems, we used SW-client compression
and removed the HW compression. Runs jumped to 22+ hours, but we where
not seeing the work area filled (the data was smaller, and it was taking
longer to get to us).

So I increased the inparallel parameter, which of course ramped up
the load on the clients even further.

The question of which version of Gzip to run arose, we had a fairly
old version and there is a newer-Sun version available, just didn't
know how version sensitive we where. I know version of gzip (which
we use on some partitons on these clients) is very version specific.

Is there a list of tested/approved gzip versions ? I didn't see one
but may not have dug deep enough.

Current gzip
$ /usr/local/bin/gzip -V
gzip 1.2.4 (18 Aug 93)

Proposed gzip
$ /usr/bin/gzip -V
gzip 1.3.5
(2002-09-30)
Copyright 2002 Free Software Foundation 


                                                thanks,

                                                Brian
---
   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
   Computer Systems Support        (v) 518 486-1697
   Wadsworth Center                (f) 518 473-6384
   NYS Department of Health        Help Desk 518 473-0773



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