If you are careful about how you balance things, there's probably no
reason why SSDs and Spinners in the same server wouldn't work so long as
they are not in the same pool. I imagine that recommendation is
probably to keep things simple and have folks avoid designing unbalanced
systems.
Mark
On 06/12/2015 10:06 AM, Quentin Hartman wrote:
I don't know the official reason, but I would imagine the disparity in
performance would lead to weird behaviors and very spiky overall
performance. I would think that running a mix of SSD and HDD OSDs in the
same pool would be frowned upon, not just the same server.
On Fri, Jun 12, 2015 at 9:00 AM, Dominik Zalewski
<dzalewski@xxxxxxxxxxxxx <mailto:dzalewski@xxxxxxxxxxxxx>> wrote:
Be warned that running SSD and HD based OSDs in the same server
is not
recommended. If you need the storage capacity, I'd stick to the
journals
on SSDs plan.
Can you please elaborate more why running SSD and HD based OSDs in
the same server is not
recommended ?
Thanks
Dominik
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