ADSM-L

Re: Disaster-Recovery Again...

1999-07-26 12:42:38
Subject: Re: Disaster-Recovery Again...
From: "Prather, Wanda" <PrathW1 AT CENTRAL.SSD.JHUAPL DOT EDU>
Date: Mon, 26 Jul 1999 12:42:38 -0400
        [Prather, Wanda]
        I have no idea WHO you could have been talking to, but the entire
statement below is absolute, ridiculous, (and not even very believeable)
unmittigated crap.  I have installed ADSM on MVS, AIX, and WinNT:

        1) There is no separate DRM data base.

        2) There is NO structural difference in an onsite-copy pool and an
off-site copy pool.  Copy pools are part of the base product, not DRM.  You
can use copy pools whether or not you pay for the DRM component, and
manually mark the tapes offsite when you eject them instead of having DRM do
it for you.

        3) ADSM knows perfectly well what is on the off-site tapes, same as
the on-site tapes. They are created the same way, tracked the same way.  A
tape becomes "off-site" only when someone updates the properties of the tape
to say it's offsite.  It's still in the ADSM data base.

        4) As I said in my previous post, you can most certainly do file
restores or volume restores from COPY pool tapes.



>   " They told me
> that there was something set differently in a DRM storage pool and that it
> used
> a different database.  He said that
> because of this, ADSM did not know about the state or contents of off-site
> tapes
>  and could therefore not re-build a tape
> on-site from that media.  It was then that he told me the only way to do
> tape
> restores was to have a second copy pool that
> was not controlled by the DRM.   "

************************************************************************
Wanda Prather
The Johns Hopkins Applied Physics Lab
443-778-8769
wanda_prather AT jhuapl DOT edu

"Intelligence has much less practical application than you'd think" -
Scott Adams/Dilbert
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