Erik McCormick writes: > We use Edge-Core 5712-54x running Cumulus Linux. Anything off their > compatibility list would be good though. The switch is 48 10G sfp+ > ports. We just use copper cables with attached sfp. It also had 6 40G > ports. The switch cost around $4800 and the cumulus license is about > 3k for a perpetual license. Similar here, except we use Quanta switches (T5032-LY6). SFP+ slots and DAC cables. Actually our switches are 32*40GE, and we use "fan-out" DAC cables (QSFP on one side, 4 SFP+ on the other). Compared to 10GBaseT (RJ45), DAC cables are thicker, which may complicate cable management a little. On the other hand I think DAC still needs less power than 10GBaseT. And with the 40G setup, we have good port density and a smooth migration path to 40GE. We already use 40GE for our leaf-spine uplinks. Another advantage for us is that we can use a single SKU for both leaf and spine switches. The Cumulus licenses are a bit more expensive for those 40GE switches (as are the switches themselves), but it's still a good deal for us. Maybe these days it makes sense to look at 100GE switches in preference to 40GE; 100GE ports can normally be used as 2*50GE, 4*25GE, 1*40GE or 4*10GE as well, so the upgrade paths seem even nicer. And the prices are getting competitive I think. -- Simon. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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