Comment by justsomehnguy
4 hours ago
> Most of it second hand from eBay for half the usual retail price.
You were scammed. X520 is old enough to drive a car, the shop should pay you to get it off their hands.
4 hours ago
> Most of it second hand from eBay for half the usual retail price.
You were scammed. X520 is old enough to drive a car, the shop should pay you to get it off their hands.
Ha. I meant the rest of the equipment (USW-Aggregation, Unifi Pro Max 16, UNAS Pro, Unifi Express 7) was somewhere around half retail price.
I think I paid ~$15 for each X520-DA2 including postage.
I've started buying E810s even for 10G links. PCIe Gen4, lower power draw, RDMA support, generally backward-compatible with SFP+ DACs and transceivers, and relatively inexpensive. Not nearly as dirt-cheap as the X520s but not crazy expensive (last I looked, at least). As I gradually replace switches over the next few years I can start taking advantage of 25G.
This is the way. The 10G cards are ancient and hog all the PCIe lanes.
I’ve had the best luck with Mellanox ConnectX 4 or 5 cards. The 5 can happily run 25G on a modern lane constrained system.