Products are commonly specified as meeting a particular British Standard, and in general, this can be done without any certification or independent testing.
I tried 4k, on up to 16M, after 8-10M no improvement.
It is the technical committees that, formally, approve a British Standard, which is then presented to the secretary of the supervisory sector board for endorsement of the fact that the technical committee has indeed completed a task for which it was constituted.
I agree with that the size should be a multiple of the block size, which is often 4K.
Yes, it's the most important point here.
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