On Tue, Dec 03, 2019 at 15:43:10 +0100, Stefan G. Weichinger wrote:
> I consider recreating that holding disk array (currently RAID1 of 2
> disks) as RAID0 ..
Just focusing on this one aspect of your question: assuming the
filesystem in question doesn't have anything other than the Amanda
holding-disk area on it, I suspect you would be better off creating two
separate filesystems, one on each underlying disk, rather than making
them into a RAID0 array.
Amanda can make use of two separate holding-disk directories in
parallel, so you can still get twice the total holding disk size
avilable in a run (compared to the current RAID1 setup), but Ananda's
parallel accesses will probably cause less contention on the physical
device since each filesystem is stored independently on one drive.
(Also, if one of the drives fails the other holding disk filesystem will
still be available, while if you are using RAID0 one drive failing will
take out the whole array....)
Nathan
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