I counted around 720 modules just in that aisle = 120TH/s and just the ones you see. There might be more modules behind the 1st row.
Who knows how many more aisles are there.
That reminds of the Guns, lots of guns scene in the Matrix:
https://www.youtube.com/watch?v=Y70vcs3oV14There appears to only be one row per rack at the moment, but those racks are way longer than that screenshot shows.