this post was submitted on 12 Apr 2024
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Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ
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New SLC flash can store data for about 100 years when kept at room temperature. The data retention time will drop with write cycles though. Consumer SSDs use TLC or QLC flash, which is only guaranteed for 1 year of offline data retention, but it will probably be good for several years if it's not worn out.
Where is this SLC quaranteed for 100 years.
SLC NOR flash often has a typical rating of 100 years at 25°C, but only 20 years at maximum operating temperature is guaranteed. These flash chips are a few megabytes or less and are used for storing firmware in embedded devices. They are often written once and expected to retain their data for the lifetime of the device without having the ability to automatically rewrite blocks that are loosing their charge like an SSD.