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Reliability Specifications
Quantum A-Series Tape Drives User’s Guide 50
Reliability Specifications
The LTO-3 Half-Height Tape Drive is designed for maximum reliability
and data integrity. Table 22
lists the reliability specifications.
Table 22 Reliability
Specifications
Mean Time Between
Failures 1
The mean time between failures (MTBF) for the internal drive is specified
at 250,000 hours minimum. This specification includes all power-on and
operational time but excludes maintenance periods. Operational time is
assumed to be 100% of the power-on time. Operational time is the time
the tape is loaded.
Specification Description
Cartridge load/
unload
100,000 cartridge load/unload cycles (no
thread)
Error recovery and
control
• Error correction code techniques
(C1 and C2 ECC)
• Read-after-write (RAW)
• Error monitoring and reporting (error log)
•Retry on
Mean time between
failures (MTBF)
250,000 hours MTBF at 100% duty cycle:
power applied and tape moving continuously
(tabletop drive; 50,000 hours at full load and
25°C)
Mean time to replace
(MTTR)
Less than 30 minutes
Nonrecoverable error
rate
Less than 1 in 10
17
bits