Chapter 5 Specifications
LTO Cartridge Specifications
LTO-4 Half-Height Tape Drive User’s Guide
37
Mean Time Between
Failures
5
The mean time between failures (MTBF) for the internal drive is specified
at 300,000 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.
The MTBF for the tabletop drive power supply is 50,000 hours with the
unit operated at full load and 25°C.
Mean Time to Replace
5
The mean time to replace (MTTR) is the average time required by a
qualified service technician to diagnose a defective drive and to install a
replacement drive. The MTTR for LTO products is less than 0.5 hour (30
minutes).
The LTO drives are field-replaceable units. If a problem occurs with a
subassembly or component in the drive, you should replace the entire
unit. Return the drive to the factory in its original packaging. Contact
your distributor, dealer, your computer system company or your sales
representative to arrange the return.
LTO Cartridge Specifications
For questions concerning LTO cartridge specifications
see
http://www.fujitsu-siemens.com/support
.
Note:
The MTBF rating does not represent any particular drive, but
is derived from a large database of test samples. Actual rates
may vary from unit to unit.
