What is the crunchy sound you are hearing when a hard drive is reading and writing data?
In: Technology
Take a look at this diagram of a hard drive. https://www.bhphotovideo.com/explora/computers/tips-and-solutions/anatomy-hard-drive
The hard drive consists of spinning metal platters, a read head that overs over those platters and an arm that moves the head into position.
The crunching sound you’re hearing is the arm moving the read head into various positions very quickly. That’s why you hear it more when doing lots of small reads or writes. If you’re reading or writing data sequentially then the arm doesn’t have to move so much and you don’t hear the sound.
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