It depends on what specifically Iron Mountain is selling you. A place to store your physical data device or are they promising to keep your data available? The

It depends on what specifically Iron Mountain is selling you. A place to store your physical data device or are they promising to keep your data available? The former sounds cheaper and easier for Iron Mountain. Given Iron Mountain started in the 1950s, redundantly backing up customer data was infeasibly expensive for most of the company’s lifetime.