On 09/04/18 19:02, Vincent Royer wrote:
I suppose what I'm trying to gain is some clarity on what choice is
best for a given application. How do I know if it's better for me to
use a raid card or not, to include flash-cache on it or not, to use
ZFS or not, when combined with a small number of SSDs in Replica 3.
How few is "small number" - most importantly number per server? Replica
3 is a start, as it already tells us you can lose at one entire server
and carry on as normal. If you lose two, your GlusterFS is down.
What is your resilience goal? You should really be starting with
requirements, not speccing out and buying servers and drives and then
trying to force them to fit your expectations.
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