SuperMicro dual expander backplanes.
- Thread starter frogtech
- Start date
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Yes, though you don't need to even remove it. If you don't connect any cables, it won't do anything.
See no issues with that, assuming you have one of the versions that has the socketed modules (e.g. 216).
Some have the SAS expanders as modules that sit on top of the main PCB. Actual module looks like this: Supermicro BPN-SAS3-216EL Rev: 1.01 Card | eBay
Correct, as bluefox said there are sas2 and 3 expander backplanes where the actual expander is a daughter board.
Any idea if dual expander backplanes actually increase total bandwidth?
I think on the sas3 expanders for the 24 port backplane only 2 of the 4 ports are for connectivity, the other 2 only support cascading, I might be wrong but that's my understanding of the manual for them from SMC.
So 1 dual port sas3 hba ((4 x 2) x 12 gbps) = 96 gbps or 192 gbps in a dual expander, dual HBA setup?
96 gbps for sata 3?
Any idea if dual expander backplanes actually increase total bandwidth?
I think on the sas3 expanders for the 24 port backplane only 2 of the 4 ports are for connectivity, the other 2 only support cascading, I might be wrong but that's my understanding of the manual for them from SMC.
So 1 dual port sas3 hba ((4 x 2) x 12 gbps) = 96 gbps or 192 gbps in a dual expander, dual HBA setup?
96 gbps for sata 3?
They do increase bandwidth, assuming you're using SAS SSDs. As for which ports are for what, there's not really such a concept. SAS expanders have no designated input/output ports. It's really functionally the same as ethernet in that regard. You could have all 4 going back to your HBA or 3 downstream to another SAS expander.