provided failure prediction by monitoring certain online hard drive activities.Ī subsequent version of the standard improved failure prediction by adding an automatic off-line read scan to monitor additional operations. (2003) comments that the technology has gone through three phases: These may include increased heat output, increased noise level, problems with reading and writing of data, or an increase in the number of damaged disk sectors. While the eventual failure may be catastrophic, most mechanical failures result from gradual wear and there are usually certain indications that failure is imminent. Mechanical failures account for about 60% of all drive failures. Unpredictable failures which occur without warning due to anything from electronic components becoming defective to a sudden mechanical failure, including failures related to improper handling.Monitoring can determine when such failures are becoming more likely.
Hard disk and other storage drives are subject to failures (see hard disk drive failure) which can be classified within two basic classes:
