Great work! Very informative. This photo may change some of your assumptions: https://www.facebook.com/AltoonaDataCenter/photos/pb.440301219393803.-2207520000.

Great work! Very informative. This photo may change some of your assumptions: https://www.facebook.com/AltoonaDataCenter/photos/pb.440301219393803.-2207520000.1417172391./731322860291636/?type=3&theater https://www.facebook.com/AltoonaDataCenter/photos/pb.4403012... In later photos, the ToRs appear to be Arista as well. It also appears they tend to have only 24 servers/rack, so a non-blocking ToR could be a 48x10G switch. Although I suppose 4x40 could be used as 16x10G here with the 48 port ToR. EDIT: Scratch that, I forgot about the OpenCompute design, it looks like they have 42-48 server per rack in some cases.