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 1The 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 1017 bits