Ratio HD vs backup disk

External Since: Dec 12, 2007 Posts: 137

Has anyone figured out the ideal ratio for a Time Machine backup disk?
I mean, if you have say a 500GB HD what would be a good size TM backup
disk? 1TB? Of course, the drive should be in use for a good number of
years.

External Since: Sep 07, 2003 Posts: 305

In article ,
Heli wrote:

> Has anyone figured out the ideal ratio for a Time Machine backup disk?
> I mean, if you have say a 500GB HD what would be a good size TM backup
> disk? 1TB? Of course, the drive should be in use for a good number of
> years.

It depends on how quickly files change.

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