ADSM-L

Re: Mixed tapes in a 3494 library

2001-08-21 16:03:16
Subject: Re: Mixed tapes in a 3494 library
From: Joe Faracchio <brother AT SOCRATES.BERKELEY DOT EDU>
Date: Tue, 21 Aug 2001 13:04:37 -0700
What if your onsite-TAPEPOOL is one DEVCLass and your offsite-COPYPOOL
is a different DEVClass?  Combined with defining the library as two
LiBR's with different private/scratch cataegories?

   .. joe.f.


Joseph A Faracchio,  Systems Programmer, UC Berkeley
Private mail on any topic should be directed to :
   joef AT socrates.berkeley DOT edu

On Tue, 21 Aug 2001, Richard Sims wrote:

> >We are planning to use a mix of short and long length 3590 tapes in a single
> >3494 library.  Some storage pools will use the short tapes for a 20gb 
> >capacity,
> >others will use the long 40gb capacity.
> >
> >Is it possible to have two types of scratch tapes existing in the same 
> >library,
> >or must we choose one length of tape for the scratch pool and staticly assign
> >tapes to the other stgpools?
> >
> >Has anyone done this sort of thing, or have any thoughts on the subject?
>
> Mike - I went through the same thing, and found it impossible.
>        The problem is that the ADSM definitions boil down to having to
> dedicate drives to each scratch Category, which is not a viable option
> for most of us with finite budgets.  I'm not aware of any recent TSM
> changes which would allow for problemless dynamic sharing of 3590 drives
> in a 3494 library.  (I tried it as an experiment, and the resulting
> collisions made for a very ugly mess.)  I ended up back with a single
> scratch category for 3590 J and K tapes, and used Define Volume to
> assign Js to offsite and other, lesser tasks.
>
>   Richard Sims, BU
>
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