[Pc_Support] Re: Backup methodology -- centralize for lower TCO

[Bryan J. Smith]

On Mon, 2006-06-26 at 21:35 -0500, William A. Mahaffey III wrote:
> Is there any *free* way to do that delta/incremental near-line backup ? 
> I am doing full near-lines, every night, A/B-style (so I have 2 full 
> copies, the older of which is overwritten with each new copy).

Huh?

First off, you're not using rsync?

Secondly, there are various "snapshot" options -- not only at the volume
manager level, but also using hard links.

And there are many other options too.

> How much time penalty is there in doing deltas vs. full ?

A hell of a lot!  If you're only changing 5% of your files/capacity,
then you're copying 20x more than you need to!


-- 
Bryan J. Smith           Professional, technical annoyance
mailto:b.j.smith at ieee.org     http://thebs413.blogspot.com
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