ADSM-L

Re: Using new tapes

1998-03-06 11:38:38
Subject: Re: Using new tapes
From: "Smith, Richard" <smithrr AT MARITZ DOT COM>
Date: Fri, 6 Mar 1998 10:38:38 -0600
Thanks!!

Rick Smith
Maritz, Inc.
Storage & Security Administration
smithrr AT maritz DOT com
(314) 827-1584

> ----------
> From:         Koen Leeten[SMTP:Koen_Leeten AT CEM DOT BE]
> Sent:         Friday, March 06, 1998 10:18 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: Using new tapes
>
> Hello rick,
> you should define your estimated capacity in the deviceclass as
> 2000MB.
> Your +_800MB for 3490E is also OK. To my knowledge this depends on
> client
> compression. If you have clientcompression on IDRC can't compress it
> any
> more when the data move to tape and ADSM thinks has put 800MB on a
> tape.
> When you don't use client compression IDRC compresses the data when it
> put's them on tape and ADSM thinks it has put 2000MB  on a tape. So
> what it
> comes down to is that it is the same amount of userdata only the
> compression is at a different place in the chain.
> As to the second question it depends on the number concurrent
> migration
> processes and if you are using collocation ore not.
> greetings. Koen.
>
>
>
> Koen Leeten
> Cem
> kleeten AT cem DOT be
>
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