Friday, August 21, 2015

hard drive - Is data on harddisk periodically re-written for data consistency?

There is one question which is bothering me alot: It is said that data can only be held on magnetic disks for about 5 years. After that, it could get lost because the magnetic force on the disk gets "weak" (I do not really know how to describe it better ;))



Do disks counteract against this? For example: Do they rewrite all their bits from time to time when they are idling?



Regards
Christian

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