I'm looking to format a 3.5" 640gb drive after a 2.5" drive failed on me. I've never formatted, so "allocation unit size" was a bit foreign. After researching, it seemed the higher the number the more speed, but less space available.
Space isn't that much of an issue, since I have a separate drive with 1tb of space and an external drive with 2tb to fall back on if needed.
Would I notice a difference between 4096 bytes and 64 kilobytes?
And, if you know--
How much space would 4096 bytes take up, and how much space would 64 kilobytes take up?