He said that he writes distributed software for datacenters.
Presumably he runs all that hardware so he can have a lot of VMs running his distributed software at once. It's generally cheaper to buy a lot of commodity boxes than one super-beefy box, hence the large collection.
Presumably he runs all that hardware so he can have a lot of VMs running his distributed software at once. It's generally cheaper to buy a lot of commodity boxes than one super-beefy box, hence the large collection.