Mean Time Between Failures; Mean Time To Replace - Certance LTO-2 Online User's Manual

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Specifications

Table 9. Reliability (Continued)

Specification

Mean time between failures (MTBF)

Cartridge load/unload

Mean time to replace (MTTR)

Mean Time Between Failures

The mean time between failures (MTBF) for the internal drive is specified at 250,000 hours mini-

mum. This specification includes all power-on and operational time but excludes maintenance peri-

ods. Operational time is assumed to be 100 percent of the power-on time. Operational time is the

time the tape is loaded.

The MTBF for the desktop drive power supply is 50,000 hours with the unit operated at full load and

25°C.

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.

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 Certance LTO drives are field-replaceable units. If a problem occurs with a subassembly or com-

ponent 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 Certance sales

representative to arrange the return.

Description

250,000 hours MTBF at 100% duty cycle: power applied

and tape moving continuously

(Desktop drive; 50,000 hours at full load and 25°C)

100,000 cartridge load/unload cycles (no thread)

Less than 30 minutes

Mean Time Between Failures

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