Il 16/03/2011 18:38, Phil Stracchino ha scritto: > 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. > >
Hi Phil, that last sentence sounds a little scary to me: "this will survive multiple disk failures *as long as you don't lose both disks of any single pair*". Isn't RAID6 a safer bet ? Thanks. Marcello ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users