scope:

This International Standard specifies a test method for estimating the life expectancy (LE) of information stored on rewritable and write-once magneto-optical media. Only the effects of temperature and relative humidity on the media are considered.

Purpose and assumptions

Purpose

The purpose of this International Standard is to establish a methodology for estimating the life expectancy of information stored on magneto-optical discs. This methodology provides a technically and statistically sound procedure for obtaining and evaluating accelerated test data.

Assumptions

The validity of the procedure defined by this International Standard relies on five assumptions:

- the failure mechanisms acting at the usage conditions are the same as those at the accelerated conditions;

- the linearity of the byte error rate (BER) estimated over the accelerated and design conditions is valid;

- all failure mechanisms have been accounted for and appropriately modelled;

- failure caused by reversible effects such as surface dust is not included;

- failure from repairable parts such as external cartridge components is not included.