Editing Linear Tape-Open (section)

=== WORM ===
New for LTO-3 was [[write once read many]] (WORM) capability. This is useful for legal record keeping, and for protection from accidental or intentional erasure, for example from [[ransomware]], or simply human error. Standard LTO cartridges do include a write-protect switch in the bottom-left corner, although it is easily overridden by the user and doesn't provide any protection from accidental deletion by, for example, misidentification of a cartridge. An LTO-3 or later drive will not erase or overwrite data on a WORM cartridge, but will read it. A WORM cartridge is identical to a normal tape cartridge of the same generation with the following exceptions: the cartridge memory identifies it to the drive as WORM, the servo tracks are slightly different to allow verification that data has not been modified, the bottom half of the cartridge shell is gray,<ref name="PVMatrix"/> and it may come with tamper-proof screws.<ref name="LTO 3 WORM"/> WORM-capable drives immediately recognize WORM cartridges and include a unique WORM ID with every dataset written to the tape. There is nothing different about the tape medium in a WORM cartridge.