On 03/16/11 13:08, Mike Hobbs wrote:
> Hello, I'm currently testing bacula v5.0.3 and so far so good. One
> of my issues though, I have a 16 bay Promise Technologies VessJBOD. How
> do I get bacula to use all the disks for writing volumes to?
>
> I guess the way I envision it working would be, 50gb volumes would be
> used and when disk1 fills up, bacula switches over to disk2 and starts
> writing out volumes until that disk is filled, then on to disk3, etc..
> eventually coming back around and recycling the volumes on disk 1.
>
> I'm not sure the above scenario is the best way to go about this, I've
> read that some people create a "pool" for each drive. What is the most
> common practice when setting up a JBOD unit with bacula? Any
> suggestions or advice would be appropriated.
That scheme sounds like a bad and overly complex idea, honestly.
Depending on your data load, I'd use software RAID to make them into a
single RAID5 or RAID10 volume. RAID10 would be faster and, if set up
correctly[1], more redundant; RAID5 is more space-efficient, but slower.
[1] There's a right and a wrong way to set up RAID10. The wrong way is
to set up two five-disk stripes, then mirror them; lose one disk from
each stripe, and you're dead in the water. The right way is to set up
five mirrored pairs, then stripe the pairs; this will survive multiple
disk failures as long as you don't lose both disks of any single pair.
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