The encryption policies, methods, and software capabilities for the IBM TS4500 tape library are described in this chapter.
3.1 Tape encryption overview
The tape drives that are supported by the TS4500 tape library can encrypt data as it is written to a tape cartridge.
Encryption is performed at full line speed in the tape drive after compression. (Data is compressed more efficiently before it is encrypted.) This capability adds a strong measure of security to stored data without any processing usage and performance degradation.
3.1.1 ...

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