Spectra Stack starts as a 6U library with 1 to 6 LTO tape drives and 10 to 80 LTO tape slots. Each module of the Spectra Stack holds an additional 10 to 80 tape slots and 1 to 6 tape drives. Scalable from 10 to 560 tape slots and 1 to 42 tape drives, users can store more than 6.7PB (16.7PB compressed*) of data in a fully expanded Spectra Stack library.

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