IMHO --
Archives and backups serve two different purposes.
Backups let you restore a damaged file or a damaged machine.
Archives let you get some data off the machine and put in on a shelf for a
long time.

Archives are useful for meeting legal requirements for retention, or for
getting rid of a machine/filespace/directory that you're ALMOST sure you
don't need.

> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
> John Pimentel
> Sent: Monday, June 18, 2001 4:30 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Archiving vs Backups
>
>
> My basic understanding of this is that a backup is intended to be
> more easy
> and quick to restore.  It also tends to be on more expensive media (due to
> speed and such).  Archives are kind of your third tier of storage.  If you
> have the nth copy of a something that is not likely to be used ever, but
> needs to be kept for months/years then an archive pool makes sense.  The
> archive pool would be made up of your slowest storage solution.
> You have to
> look at how much you have to back up, how long you will keep this
> data, and
> how likely it is to be restored.  The reason you even have to ask is that
> TSM has so many options.
>
> In my environment I don't have archive pools.  Most of my data (200+ megs)
> is backed up to disk.  At night I migrate to 3570 tape.  My 3570
> storage is
> part of a backup rather than archive pool.  I keep 7 versions of
> a file, and
> a last only for 9999 days (the max).  I move and keep so little
> data that it
> does not make sense for me to have a 3rd storage solution and
> create archive
> pool(s) that utilize it.
>
> So, it really depends on your resources, how much you have to
> keep, and for
> how long.  Either way, as they beat into our head in class, you backup and
> restore, and you archive and retrieve.
>
>
> -----Original Message-----
> From: Dearman, Richard [mailto:rdearm1 AT UIC DOT EDU]
> Sent: Monday, June 18, 2001 3:00 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Archiving vs Backups
>
>
> Is there any real difference between archiving and running a
> regular backup.
> I currently just run backups and do no archiving.  Although to do
> keep data
> for years in some cases.  What are your opinions?  Should I
> change my backup
> strategy and create archive storage pools.
>
> Thanks for your input :)
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