>From networker, you know how many tapes you have in total, and (if
memory serves me) you can get when each tape was first initialized.
Using this, you can get a good handle on annual growth rate.

On Jan 15, 2008 5:52 AM, Stan Horwitz <stan AT temple DOT edu> wrote:
> On Jan 14, 2008, at 6:40 PM, Werth, Dave wrote:
>
> > Stan,
> >
> > Can you use history to help you?  Go back a year and say this is
> > probably what I would have recommended at the start of 2007 but then
> > this happened and this happened so we ended up actually needing this
> > much.  If they're forcing you to forecast for a year out then are they
> > forcing the people who would be adding this storage or servers to do
> > the
> > same thing?  If so maybe it would help to look at their forecasts.
>
> I have never had enough disk space or time to track that information
> on my NetWorker server. Our backup retention period is three months.
> No one in any other department (or even my own) is required to provide
> projections on data growth. I just emailed my boss and asked him if we
> could at least buy one new tape cartridge per new server added this
> fiscal year. We do charge each department a fee each time they add a
> new server onto our nightly backup schedule and that fee is supposed
> to include the cost of new tape media, so I figured it couldn't hurt
> to actually use that money.
>
>
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