Data Center Tank Total Cost of Ownership: Beyond the Sticker Price The purchase price is the smallest number in a tank program. Over a 30-year life the operating costs - recoating, inspection, unscheduled downtime, water loss and the labor to babysit a failing lining - usually dwarf the capital. For a data center, where water loss can mean lost cooling or a failed fire test, TCO is the number that should drive the spec. Over a 30-year life, a Glass-Fused-to-Steel (GFS) tank