m.roth@xxxxxxxxx wrote:
hw wrote:
Mark Haney wrote:
<snip>
BTRFS isn't going to impact I/O any more significantly than, say, XFS.
But mdadm does, the impact is severe. I know there are ppl saying
otherwise, but I´ve seen the impact myself, and I definitely don´t want
it on that particular server because it would likely interfere with
other services.
<snip>
I haven't really been following this thread, but if your requirements are
that heavy, you're past the point that you need to spring some money and
buy hardware RAID cards, like LSI, er, Avago, I mean, who's bought them
more recently?
Heavy requirements are not required for the impact of md-RAID to be noticeable.
Hardware RAID is already in place, but the SSDs are "extra" and, as I said,
not suited to be used with hardware RAID.
It remains to be tested how the hardware RAID performs, which may be even
better than the SSDs.
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