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Damn, what are they and what do you use them for?
Handling geophysical data. Very demanding in terms of processing, network and storage, so they're built accordingly.
Mind sharing the specs?
I only remember the rough outline:
Dual Xeon gold of some sort. The CPUs were upgraded in 2021, so whatever was reasonably top shelf around that time would be a good bet.
256GB RAM
Intel X710 Dual SFP+ 10gig net
Mellanox ConnectX (5, I think, not sure) 100gig net
Some high end NVIDIA card. I don't remember which, but it replaced a Quadro P5000.
Broadcom 3108 with cache battery
36x Exos 10TB 3.5" SAS drives
2x SSD of some type I do not remember
2x NVMe, don't remember those either.
Supermicro X11 mainboard.
Supermicro 5U chassis with drive bays in both back and front
Some bits were upgraded, such as network, cpu, ram, and GPU. It'd be substantially less today, but the original setup is from 2017, and I remember seeing an invoice of ~180.000 USD equivalent each. My house is 150.000 USD equivalent.
Each cluster involves four or six of these machines in a modified shipping container along with some other hardware, working as a mobile data cruncher.