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Appendix C — Specifications
WORM Media
Certain records retention and data security applications require a Write
Once, Read Many (WORM) method for storing data on tape. Drives enable
WORM support when a WORM tape cartridge is loaded into the drive.
WORM Media Requirements Because standard read/write media are
incompatible with the WORM feature, a specially formatted WORM tape
cartridge is required. Each WORM cartridge has a unique, worldwide
cartridge identifier (WWCID), which comprises the unique CM chip serial
number and the unique tape media serial number.
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/
When the drive senses a WORM cartridge, the firmware prohibits the
Cleaning Cartridges
Cleaning cartridges are valid for 50 uses. Do not rewind and reuse the
material in a cleaning cartridge. Reusing the material may redistribute
contaminants previously removed from the tape path. If all of the cleaning
material is used, discard the cartridge and use a new cleaning cartridge.
Barcode Label Specifications
Symbology The barcode labeling scheme used on Spectra Logic certified
media uses the barcode symbology of USS‐39. You can obtain a complete
description and definition of this symbology from the Automatic
Identification Manufacturers (AIM) specification, the Uniform Symbol
Specification (USS‐39), and the ANSI MH10.8M‐1993 ANSI Barcode
specification.
Application and Orientation The barcode label must be applied to the
cartridge so that it fits within the label recess on the edge of the cartridge
without curling up on the sides or ends. The label must be oriented so that
the barcode characters are along the edge closest to the hub side of the
cartridge.
August 2019
write media. This unique format prevents a drive that lacks WORM‐
capable firmware from writing on a WORM tape cartridge.
changing or altering of user data already written on the tape. The
firmware keeps track of the last appendable point on the tape.
Tape Drive and Media Specifications
User Guide—Spectra T950V Library
495
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Troubleshooting
