![]() Given it is solid state this is the only 'wear' that occurs, and it is predictable and the drives are built to manage it, for HDD's it's not very predictable and nothing can be done to manage it. Assuming this is solely a write problem i'd be happy taking it down to 10%, or as a storage drive 5%, with a HDD i'd be swapping it at 90% ish. Reading the same 79% on an SSD i'd not be at all worried as it's just telling me that you can use it for 5x longer than you already have before it runs out of the ability to write. Reading the HDD 79% i'd be worried, it'll mean lots of bad sectors and something that it deteriorating. This is what is likely to be the cause of your reduced percentage. And more likely some thing else will fail before. The controller takes account of how much spare capacity it has to replace worn out cells, how much writing has occurred, and it knows that it has used up n% of it's rated ability to write data. W1zzard said: Your drive has an endurance of 600 TBW lifetime writes, youve written 16.5 TB so far, so 100/60016.5 2.75, so 99 is actually better than the 97 suggested by that calculation, and its still A LOT of lifetime left. SSD's monitor some of these same things, but also they are known to have a limited number of write cycles per flash cell, depending on the architecture 1,500-10,000 (10,000 is impossible to buy now). They are just indicators that we know when they go bad the drive is likely to have a problem. If these are all normal then it's 100%, but it could fail tomorrow, with no further warning. Click the Search button from the Taskbar 2. It's like the Best Before date on food, they only promise you it's good till that threshold. ![]() A 5 life remaining SSD could still work fine for years and years. HDD's are 'just' monitoring various attributes like spin up time, temps, various counts, damaged sectors etc. While you can certainly download and install apps like CrystalDiskInfo and AIDA64, Windows 11 also has built-in analysis tools. Nope, the SSD manufacturer can choose the life of your SSD based on writes but in reality it doesn't mean anything.
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