ADSM-L

Re: The "incremental forever" paradigm, Was: How would you do this?

1998-03-06 13:28:54
Subject: Re: The "incremental forever" paradigm, Was: How would you do this?
From: Michael R Vogt <vogt AT AUK.NIST DOT GOV>
Date: Fri, 6 Mar 1998 13:28:54 -0500
At 11:05 AM 03/06/98 -0600, John Schneider wrote:

>         It just seems too optimistic to presume that one copy of all your
> critical files would be enough, no matter what.

You actually have *TWO* copies of your files. The one on the client's
disk and the one that serves as a backup. And counting an offsite copy,
that's *THREE*. Periodic full backups buy you absolutely nothing, unless
you do not use colocation.

We've been running backups for years and have never had a single case of
a failed recovery due to a bad backup tape. (Anyone else?)

My theory is that it's far less likely that you will lose all *THREE* copies
of your files than it is that some disaster will wipe out your entire site.
And in that case, one could make the argument that the people who want to
recover the data and the systems to which they would recover it would
probably also be history...
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