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* Ed Wilts <ewilts AT ewilts DOT org> [2005-12-15 13:56]:
> On Thu, Dec 15, 2005 at 01:45:20PM -0500, Paul Keating wrote:
> > Aptare Storage Console has a Media Forecasting Dashboard...that does
> > this...sorta.
>=20
> The "sorta" is VERY dependent on your backup patterns.  StorageConsole
> bases it on days of the week so if you have nice clean weekend fulls and
> daily incrementals, it might give you an accurate picture.  If you tend
> to a bunch of ad hoc 1TB backups scattered on different weekdays, you're
> not going to find it very useful.  Unfortunately for us, we're in the
> latter category and frankly, even knowing how much I personally know
> about our backup patterns, I can't think of any possible formula
> StorageConsole can use to do its prediction unless it goes through all
> the schedules, does a guess on those, and then does a historical search
> to see how much that schedule and mount point combination took in the
> past.  Those would be a bit ugly and could be very, very wrong.

One thing they ARE good at is telling you how much data is on the tapes
on average, as they calculate based on actual usage. You could probably
use that to get your own rough idea based on the averages.

--=20
David Rock
david AT graniteweb DOT com

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