Abstract: Systems and methods are provided for optimizing allocation of storage resources for computing systems. For example, a method includes performing a storage allocation process to optimize storage of user data in data centers of a computing system. The storage allocation process includes determining a ranking of each data center in the computing system for a given user, and selecting a data center to store user data of the given user, based at least in part on the determined rankings of the data centers for the given user. The data centers are ranked using a ranking function which includes an access ratio that is determined as ratio of (i) a number of times that each of a total number of users in the given data center have accessed shared data of the given user to (ii) a number of data uploads that the given user has made to the computing system.