Managing a data center

A method of managing data center electronic devices in a data center, comprising:

• operating a plurality of data center server devices that define a particular amount of computing power of a data center, the plurality of data center server devices supported in a plurality of server racks positioned in a frame assembly that comprises a plurality of bays defined along a lengthwise dimension of the frame assembly, the plurality of bays arranged in a plurality of stacked layers of bays, the plurality of stacked layers comprising at least a first layer of bays and a second layer of bays positioned vertically above the first layer of bays, the plurality of 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 plurality of operating data center 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 at least one data center server device;
• and
• performing the maintenance operation on the at least one data center server device with the automated service machine.