ADSM-L

3570 Magstar device and compression

2015-10-04 17:48:52
Subject: 3570 Magstar device and compression
From: Tom Haddad [SMTP:thaddad AT COLUMBIAENERGYGROUP DOT COM]
To: ADSM-L AT VM.MARIST DOT EDU
I have 3570 devices (models B and C) running ADSM v3.1.
They have been operational for a short time, but I have questions about =
client
compression.
The drives are defined as FORMAT=3DDRIVE and DEVTYPE=3D3570.

In regards to Netware (4.11) clients, how can I maximize my compression =
gain??
I attempted to leave COMP=3DNO at the server (for the node) and COMP OFF =
in the
OPT file and let the hardware take
over with compression. Looks Iike I average about 7 or 9G max on a tape
cartridge as they became full.
Next I want to put COMP ON in the OPT file and see if I get more =
compression..
Any help?

I think my NT clients gain an overall better compression rate than my =
Netware
clients..hmmm!!

Looks like compression gain is driven by  the type of client(data),
hardware...etc..
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