If you can identify the files that naturally grow, in 4.2 you can exclude
them from compression, e.g.:
exclude.compression /.../*.zip
_____________________________
William Mansfield
Senior Consultant
Solution Technology, Inc
"Ochs, Duane" <[EMAIL PROTECTED]>
Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]>
04/11/2002 08:18 AM
Please respond to "ADSM: Dist Stor Manager"
To: [EMAIL PROTECTED]
cc:
Subject: Re: NetWare, Compression & Slow Backups
Something to keep in mind for compression. In areas with limited
bandwidth
the compression of files can speed up your backups considerably. The
drawback, which I have encountered and just have to deal with, is that
when
compression increases the size of the file it is not sent.
That is good, but your client has just used the TIME and CPU to compress
it. This caught me off guard on a few servers, because the servers were
being used for zipped EDI traffic and the backup would run for 12 - 14
hours
every night. After reviewing the log file it would show that every file
was
compressed and grew and then was sent uncompressed.
So you may have to evaluate it on a server by server basis. We eventually
turned compression off and the backups finish in 6 hours.
Duane Ochs
Systems Administration
Quad/Graphics Inc.
414.566.2375
-----Original Message-----
From: John Underdown [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 11, 2002 8:05 AM
To: [EMAIL PROTECTED]
Subject: Re: NetWare, Compression & Slow Backups
Flemming,
If you try to recompress a file it will grow in size on you plus over work
your CPU, the TSM client is smart enough to know the difference between a
file that's already compressed and one that is not.
COMPRESSION YES
COMPRESSALWAYS NO (Always!)
Also, if compression is set to yes, turn off the compression on your tape
drives, you'll have the same issue!!!
john
Synovus
Columbus, GA
-----Original Message-----
Date: Wed, 10 Apr 2002 14:08:54 +0200
From: Flemming Hougaard <[EMAIL PROTECTED]>
Subject: NetWare, Compression & Slow Backups
Hi all
I have read most of the bulletins about NetWare and slow backups - and =
one of those issues there keeps coming up in most of these bulletins, is =
about compression.=20
I really need the Client compression, but my question is:
- Should you use the '"COMPRESSALWAYS YES"? If not why?
Best regards
Flemming Hougaard
------------------------------
