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[-] QuantumEraser@fedia.io 7 points 4 days ago

Some modern hard drives transparently encrypt all data with an internal key, which can be erased with a special secure erase command. Comes in handy for wiping drives without spending hours overwriting the enire disk.

[-] OwOarchist@pawb.social 2 points 4 days ago

How does a hard drive include enough processing power to encrypt/decrypt things without having any impact on read/write times?

[-] RedGreenBlue@lemmy.zip 4 points 3 days ago

Dedicated chips are really fast! They do one thing fast.

[-] grue@lemmy.world 4 points 4 days ago

What do you mean? Even a $1 microcontroller can do stuff like that nowadays.

[-] Eheran@lemmy.world 3 points 4 days ago

The hardware variants have a chip onboard that can do that when the user enables it. Hence essentially no impact on performance.

this post was submitted on 13 Oct 2026
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