Hard Digital Disk. Protection against Failures. Part I

Hard Digital Disk (HDD) is the main peripheral device destined for storing large volumes of information.

Any hard digital disk has got a set of characteristics on which the conclusion of its productivity is based: rotation speed, cache-memory volume, searching time, a number of reading heads and other.

Protection against Refusals

The parameter that enables to test the hard digital disk is called “HDD S.M.A.R.T. Capability” (HDD Instant Recovery, SMART Monitoring). It enables or disables to check the opportunity of the hard disks to refuse while booting a system and monitor them during their operation.

S.M.A.R.T. technology (Self-Monitoring, Analysis and Reporting Technology) allows for self-testing and analysis of the hard disk b y providing monitoring of various parameters, early diagnostic and prevention of failures.

For example, using this technology, you may control each head’s fly height over the disk surface, the speed of data transmission, an amount of carry-over sectors and unsuccessful attempts to read or write.