ADSM-L

Compressing data

2015-10-04 17:39:22
Subject: Compressing data
From: Alan Cheski [mailto:Alan_Cheski AT GULF DOT CA]
To: ADSM-L AT VM.MARIST DOT EDU
Howdy, we have Novell and Unix ADSM clients. The unix clients backup data to
ADSM using compression. The Novell clients do not use compression but I
think
Netware uses a compressed file system format anyway. On our ADSM server,
someone
setup the DLT deviceclass with a format of DLT35C, meaning to do hardware
compression. I am thinking that we should not be doing hardware compression
since we already backup compressed files. I believe it is possible to
increase
file sizes in some cases by doing double compression. Should we turn off
hardware compression?

Alan Cheski
Gulf Canada Resources
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