PSA vs DLR Comparison

Public Storage is the largest owner of self-storage facilities in the US, with more than 3,300 self-storage facilities in 40 states and approximately 245 million square feet of rentable space. Through equity interests, it also has exposure to the European self-storage market through Shurgard Self Storage. The company also has a merchandise business, a third-party property management business, and an insurance business that offers products to cover losses for the goods in self-storage facilities.

Digital Realty owns and operates over 300 data centers worldwide. It has nearly 40 million rentable square feet across five continents. Digital's offerings range from retail co-location, where an enterprise may rent a single cabinet and rely on Digital to provide all the accommodations, to "cold shells," where hyperscale cloud service providers can simply rent much, or all, of a barren, power-connected building. In recent years, Digital Realty has de-emphasized cold shells and now primarily provides higher-level service to tenants, which outsource their related IT needs to Digital. The company operates as a real estate investment trust.