Quantum LTO-8 HH SAS, Technical Reference Manual

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Chapter 5: Media
WORM (Write Once, Read Many) Cartridge
QuantumLTO-8 HH SAS User’s Guide 73
Figure 9
Ultrium Data and
WORM Tape Cartridges
Data Security on WORM
Media
Certain built-in security measures help ensure that the data written on a
WORM cartridge does not become compromised, for example:
• The format of a WORM Tape Cartridge is unlike that of standard
read/write media. This unique format prevents a drive that lacks
WORM-capable firmware from writing on a WORM tape cartridge.
For LTO 8, native data capacity is 12000 GB and compressed data
capacity is 30000 GB.
• When the drive senses a WORM cartridge, the firmware prohibits
the changing or altering of user data already written on the tape.
The firmware notes the last point on the tape that can be
appended.
WORM Media Errors
The following conditions cause WORM media errors to occur:
• Information in the servo manufacturer's word (SMW) on the tape
must match information from the cartridge memory (CM) module in
the cartridge. If it does not match, a media
Error Code 7 will post
on the drive's single-character display (SCD).
Requirements for
WORM Capability
To add WORM capability to your Quantum LTO Ultrium 8 drive(s), you
need to use:
• Quantum Ultrium 8 12000 GB WORM tape cartridges