Hi Mark.
> The SL4500 series looks like it should be a good option for large > deployments, though you may want to consider going with the 2-node > configuration with 25 drives each. The drive density is a bit lower but > you'll have a better CPU/drive ratio and can get away with much cheaper > processors (dual E5-2620s should be sufficient for 25 drives). > > You mean that a 2-node configuration should be faster/have better ROI then 2xSL4500 boxes? > It's important to keep in mind that unless you are talking about deploying > multiple racks of OSDs, you are likely better off with smaller nodes with > fewer drives (say 2U 12 drive boxes). That helps keep the penalty for > losing a node from being too dramatic. > > Interesting, any vendors/models you can advise? I do like high-density machines as they are more space efficient (per U) and should be more power efficient as the result, but you have a point there about the penalty. Btw, how drastic would be loosing a single node / machine, with 3x replication? > Both the SL4500 and the Dell C8000 allow you to have configurations with > multiple nodes in 1 chassis with fewer drives, so they are kind of an > interesting compromise between high density and keeping the drives-per-node > count lower. Granted, they both tend to be more expensive than supermicro > gear, so like always it's a giant balancing act. :) > Actually the SL4500 should be only ~30% more expensive (according to postings) then SuperMicro SC847, while having ~2x drive density. Regards, Stas.
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