I recall seeing presentations at various FreeBSD events from Netflix folks talking about them, so a search for something like that might find what you're lookin

I recall seeing presentations at various FreeBSD events from Netflix folks talking about them, so a search for something like that might find what you're looking for. If memory serves... SuperMicro motherboards, multiple Mellanox/Chelsio 10 Gbps NICs (probably upgraded to 40 Gbps by now, or getting close to that point), a bunch (up to 28, perhaps?) of hard drives (with no/little redundancy for thecontent), and a ton of RAM (for ZFS ARC). They run on (heavily tuned) FreeBSD operating system.