Re: Expected capacity of 3590 with adsm.

Peter,
We have only played with compression and never used it in production yet, but
in my experience, using 3590C and an estcap of 15G does the trick. I am not
sure whether estcap has a lot of importance, except for evaluating the ammount
of storage left in your storage pool. I certainly have tapes reporting usage of
20 GB, when the estcap that we used during tests was set at 15G.

Hope this helps.


On Dec 30, 12:11pm, Peter Zutenis wrote:
<=> Subject: Expected capacity of 3590 with adsm.
<=>
<=>[ text/plain
<=>  Encoded with "quoted-printable" ] :
Hi All,
<=>I am running ADSM on AIX 4.1.4 and have just installed two 3590's. I am
currently acheiving a capacity of around 11 G per cart. I was expecting to be
able to compress a lot more data per cart than what I am getting.
<=>
<=>I have compression on in AIX and also ADSM. The option I used for for
defining the device class was format=drive. I am not mixing devices - all are
3590. Perhaps I should use format=3590C ?
<=>
<=>Am I doing something wrong ?
<=>
<=>Thanks,
<=>
<=>Peter Zutenis
<=>Principal Systems Programmer
<=>Philip Morris Information Services Ltd
<=>Melbourne , Australia.
<=>
<=>Internet: pzuteni AT ibm DOT net
<=> End of excerpt from Peter Zutenis



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