Over the past 30 years, there have been numerous magnetic tape formats Nearly all have been retired, leaving three formats: Linear Tape Open (LTO), which is an open standard; and IBM 3592/ TS11xx and Oracle 9840, 9940, and T10000 proprietary formats, which are also marketed as “enterprise tape drives ” In the past, differences in performance, capacity, and reliability earned the proprietary formats the term “enterprise,” but today this is no longer true.