Hi,
Yes, but IB costs 1/4 than 10GbE and will be much expandible in future.
I'm testing Ceph currently with bonded 1 GbE links and contemplating
moving to 10 GbE or IB. I have to pay for the costs out of my own
pocket, so price is a major factor.
I have noted that just recently it has become possible to buy 10 GbE
switches for a lot less than before. I don't know what IB equipment
costs, mainly because I don't know much about IB and hence don't know
which equipment to buy.
My costs for a cobber-based 10 GbE setup per server would be approximate:
Switch: 115$
NIC: 345$
Cable: 2$
Total: 462$ (per server)
If anyone could comment on how that compares to IB pricing, I would
appreciate it.
Is it possible to quantify how much Ceph would benefit of the improved
latency between 1 GbE and 10 GbE? (i.e. assuming that 1 GbE gives me
enough bandwidth, would I see any gains from lower latency?)
And similarly, would there be a significant gain from lower latency when
comparing 10 GbE to IB? (I assume that IB has lower latency than 10 GbE)
--
Jens Kristian Søgaard, Mermaid Consulting ApS,
jens@xxxxxxxxxxxxxxxxxxxx,
http://wwww.mermaidconsulting.com/
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