Techniques for managing data center electronic devices in a data center include operating data center server devices that define a particular amount of computing power of a data center, the devices supported in server racks positioned in a frame assembly that includes bays defined along a lengthwise dimension of the frame assembly, the bays arranged in stacked layers that include at least a first layer of bays and a second layer of bays positioned vertically above the first layer of bays, the server racks positioned in at least one of the bays of the first or second layers of bays; determining that at least one of the server devices requires a maintenance operation; based on the determination, operating an automated service machine to move to a location in the data center that is adjacent to the data center server device; and performing the maintenance operation on the at least one data center server device with the automated service machine.