3 of these https://www.lenovo.com/us/en/p/servers-storage/servers/racks/thinksystem-sr645-v3/len21ts0008 https://www.lenovo.com/us/en/p/servers-storage/servers/

3 of these https://www.lenovo.com/us/en/p/servers-storage/servers/racks/thinksystem-sr645-v3/len21ts0008 https://www.lenovo.com/us/en/p/servers-storage/servers/racks... 4 units (its 4 machines in a single chassis) of this: https://www.gigabyte.com/Enterprise/High-Density-Server/H262-P60-rev-100 https://www.gigabyte.com/Enterprise/High-Density-Server/H262... all linked with a 10G switch: https://mikrotik.com/product/crs312_4c_8xg_rm https://mikrotik.com/product/crs312_4c_8xg_rm