We’re talking about raid 0 on M.2s on a carrier card that’s x16 into mobo for really fast I/O, I’ll use qtyN for quantity and Nx for PCIe lanes since it’ll get confusing. I’m curious about jamming qty2 3.0 drives (M.2 NVME) down a 4.0 lane and get as good or better than a 4.0 single drive via qty8 PCIe 4x cards on a 16x PCIe card. Does anyone have any insight if this would work? Does anyone know of a qty8 M.2 PCIe 16x 4.0 card OTHER than the Honey Badger (LQD4500)? My ASUS Hyper VROC qty4 970 evo 3.0 → 16x 3.0 does 12gbps, I understand the LQD only does 15gbps w/ the 8x → 4.0? My goal might be to buy qty4 cards w/ qty16 M.2s at slower speeds for just as fast as I need, saving money and generating the capacity I need.
Well you would need either a platform that can polyfurcate an x16 slot to 8*x2 or an active PCI-E 4.0 splitter, which are generally very expensive devices for what they do (aka. PLX chips). They are also surprisingly power hungry beasts, requiring active cooling.
The mainboard would have to accommodate, for such a heavy PCIe divvying
… Then again, I wouldn’t know, if them PCIe cards [ex. ASUS Hyper] can play nice to such a move
Even if the liquid card is not much faster in throughput, having more drives should speed up access times, depending on the raid software, as it should be able to server more parallel requests?
And if you are going raid0, I presume it is scratch data, because you don’t mind the whole array crashing at any time.
So, more drives, even connected to gen3 PCIE might be better.
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