Hi Ray,
I think the most important is to do "refreshing" of the data.
If you think of it(maybe not people with recent Adsm/Tsm servers), we ran
Adsm V1 about 7 years ago - the physical media at that time was 3480 - it
has gone through quite a few incarnations of tape technology(3480 + idrc,
3590, 3590e), so yes the data was refreshed. As we moved to newer tape
technology the old archived data was copied by Adsm move data commands to
the new tapes, and thus is still restorable after 7 years since been
archived to Adsm, and I know it will still be retrievable after 10 years....
(Take into consideration that the data is readable even after changing to
TSM 3.7 and 4.1 from Adsm V3 and 2 and 1, I think we have a pretty robust
piece of software that gives you the ability to do this).
Just my 2cents.
Regards
Christo Heuer
Absa Bank
> Doesn't anybody have a pragmatic approach to using *SM for
> long term archive?
> Bypass compression? Bypass encryption?
>
> What are the realities of using optical media (WORM)?
>
> Who performs "refreshing" (i.e., media migration) on a
> regular schedule?
>
> Has anyone successfully migrated all their archives between
> platforms, or between media (tape to optical?)
>
> It seems to me that with the wealth of experience in the
> *SM community, somebody would have some experiences
> and best practices to share!
>
>
> Ray Dmochowski
> Schering-Plough Research Institute
> Kenilworth, NJ 07033, U.S.A.
> (908) 740-3261
> ray.dmochowski AT spcorp DOT com
>
>
>
> -----Original Message-----
> From: Richard Sims [mailto:rbs AT BU DOT EDU]
> Sent: Monday, April 09, 2001 9:10 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Long Term Archive for Databases
>
>
> Ray - I think that one has to approach the long-term archiving of
electronic
> records in stages of practicality, and considering the longevity of
> the data. Other postings on the issue suggested what amounts to
performing
> an "export" of data that is stored in highly structured (database)
vehicles,
> and in general making an image external to proprietary storage vehicles
> (e.g.,
> TSM). This is to say that the format of the data is rendered "neutral",
> toward the objective of either being able to later reintroduce it into a
> contemporary storage and retrieval vehicle, or to be able to use the data
> as-is in its "flat" form, though perhaps in a limited manner.
>
> In addition to making the data "neutral", one has to house it in media
> commensurate with the objective of long-term storage and retrieval. That
> calls for the qualities of media stability, and pervasive standardization
so
> as to maximize the availability of playback mechanisms. CD-R is a current
> technology which well fulfills both requirements. However, no media is
> forever. For very long term storage, I would refer to a statement in one
> paper on the issue: "Digital preservation depends upon copying." That is,
> as the media technology approaches its twilight, the data needs to be
> transferred to the comparable media of its day.
>
> Certainly we are not pathfinders in this issue. Here are some references
to
> just a few of the sites, postings, and papers on the long-term storage of
> electronic records:
>
> http://www.nara.gov/arch/
> http://www.zdnet.com/enterprise/stories/main/0,10228,913670,00.html
> http://esdis-it.gsfc.nasa.gov/MSST/conf1996/A6_14Nonon.html
> http://www.ukoln.ac.uk/services/papers/bl/rdr6238/paper.html
> http://www.nb.no/rapporter/preserv.html
> http://www.uky.edu/~kiernan/DL/hedstrom.html
> http://www.kb.nl/coop/nedlib/results/D4.2/D4.2.htm
>
>
> Richard Sims, BU
>
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