On 2022-01-26 11:06 AM, Peter Milesson via Bacula-users wrote:
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Your way of explaining the reasoning of why to use smaller file volumes, is very appreciated.
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The only thing I haven't found out is how to preallocate the number of volumes needed. Maybe there is no need, if the volumes are created automagically. Most of the RAID array will be used by Bacula, just leaving a couple of percent as free space.
If you use actual disks as "magazines" with vchanger, you need to pre-label the volumes. If you use just one big filesystem, you can let bacula do it for you (last I looked that functionality didn't work w/ autochangers).
If you use disk "magazines" you also need to consider the whole-disk failure. If you use one big filesystem, use RAID (of course) to guard against those. But then you should look at the number of file volumes: some filesystems handle large numbers of directory entries better than others and you may want to balance the volume file size vs the number of directory entries.
For single filesystem, I suggest using ZFS instead of a traditional RAID if you can: you can later grow it on-line by replacing disks w/ bigger ones when (not if) you need to.
Dima _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
