Reference Guide

DLT-S4 Interface Reference Guide 345
Appendix A
ADLTSage WORM
DLTSage WORM is the name of the DLT-S4 feature that allows the
DLTtape S4 cartridges to be used in Write Once Read Many (WORM)
mode. This feature is enabled by the presence of a standard DLTtape S4
cartridge that has been initialized as a WORM medium cartridge. After
the cartridge has been initialized to work in WORM mode, write
operations are only allowed at the End of Data position.
The Initialization Process 1
During the DLTSage WORM initialization process, the drive will execute
a series of commands and validate the result of each command. If any
command fails, the cartridge is not initialized as a DLTSage WORM
cartridge.
First, the firmware will make sure that the initial criteria for the
initialization as a DLTSage WORM cartridge are met. These are that the
loaded cartridge is a DLTtape S4 cartridge and it is either:
• An unformatted native cartridge;
• A blank native cartridge;
• Or a native cartridge with only one filemark and an EOD on it.