
Chapter 5 Specifications
LTO Cartridge Specifications
52 LTO-4 (Model B) Half-Height Tape Drive User’s Guide
Cartridge Memory Each Ultrium 1, 2, and 3 cartridge has 4 Kbytes of nonvolatile memory:
• 3 Kbytes are used to store tape-directory and hardware specific
information.
• 1 Kbyte is available for application and OEM use.
Each Ultrium 4 cartridge has 8 Kbytes of nonvolatile memory:
• 4 Kbytes are used to store tape-directory and hardware-specific
information.
• 128 bytes are used for error information.
• Approximately 4K bytes are not used.
The cartridge memory is powered, read, and written to via a radio-
frequency link.
Cartridge Reliability After 5,000 load/eject cycles, replace the cartridge to insure data
integrity.
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