Rows of humming servers are read as memory and information stored beyond your reach. A data center can stand for an overloaded mind, or for what is quietly recorded about you.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.