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WORM (Write Once Read Many)

WORM (write once read many) is a term used for special, write-once data storage devices.

These WORM cartridges can only be read with a corresponding WORM drive. Each WORM storage device has a unique, catalogued and unchangeable serial number, so that, when handled correctly, manipulation can be ruled out.

Up until recently WORM media were the only media, accepted as audit-proof by finance authorities (GDPdU (Principles on Data Access and Verifiability of Digital Documents), GoBS (Principles of DP-based Orderly Accounting / Bookkeeping Systems)). Nowadays other storage devices are accepted as well.

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