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Formatting SSD and allocation unit size

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What would be the optimal value of allocation unit size when formatting SSD for P3D v3? 4096 bytes or 64 kilobytes or something else?

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It depends on the average size of the files you're storing. Some people think that performance improves with larger cluster sizes (over the default 4k) but it's debatable whether or not you'd notice in real world use. The drawback is that 64k clusters waste space. If you save a 2k file, it uses up the whole of a 64k cluster so a lot of small files would waste a lot of storage space.

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