Dan Langille wrote:
> On Feb 18, 2008, at 1:01 PM, Tom Allison wrote:
>> Way back when I had some tape drives. At that time Linux could not
>> provide compression on tape drives. Especially if you where trying to
>> write across multiple tapes.
>> Is this still true?
>> So if I'm looking at a tape drive that says it is an 80/204GB type, I
>> should use 80GB for my calculations?
> Compression is a hardware issue. It is not done by the OS.
> What calculations?
So I can expect that whatever is under the hood for Bacula to get me
some compression (I agree with the 1:1.5) for the tape drive.
I'm trying to see how much space I need to back up three macbooks and
three debian servers. Using my own macbook as the worse case situation
I have 20GB in $HOME, 21GB in /opt, and 66GB used in total.
Sorting out junk and stuff that I can reinstall via ports, I have
40-50GB of usable space that I'll eventually need to keep backed up.
As a guess I assumed 1.5 to 2.0 times more space in a backup of said
computer. So this means I should have ~80GB for one macbook. Something