Reliability Specifications; Mean Time Between Failures; Table 22 Reliability Specifications - Quantum Tape Drives A-Series User Manual

Reliability Specifications

Table 22 Reliability
Specifications
Mean Time Between
Failures
Quantum A-Series Tape Drives User's Guide
The LTO-3 Half-Height Tape Drive is designed for maximum reliability
and data integrity.
Specification
Cartridge load/
unload
Error recovery and
control
Mean time between
failures (MTBF)
Mean time to replace
(MTTR)
Nonrecoverable error
rate
The mean time between failures (MTBF) for the internal drive is specified
1
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.
Table 22 lists the reliability specifications.
Description
100,000 cartridge load/unload cycles (no
thread)
• Error correction code techniques
(C1 and C2 ECC)
• Read-after-write (RAW)
• Error monitoring and reporting (error log)
• Retry on
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)
Less than 30 minutes
Less than 1 in 10
Reliability Specifications
17
bits
50