CF cluster size?
 

Dear Dan,

I noticed that SxS cards are by default formatted with 32Kb cluster size, while that of nanoFlash CF cards is just 16Kb. Just out of curiosity, why have Convergent Design chosen this, and not a greater, cluster size? Intuition would tell that for long files, storage media work more efficiently with long clusters...

I'm sure you do have your well-grounded reasons, just would like to learn which.

Thanks,

Piotr

Dear Piotr,

Choosing a cluster size involves trade-offs.

Any video recording uses a certain number of custers, part of the last cluster is almost always wasted. With a 32KB custer size we would lose up to 32 KB-1. With 16KB we could lose up to 16 KB-1.

From a practical standpoint, 16 KB works fine, as would 32 KB.

We have certain "secret sauce" techniques that make a 16 KB cluster size work as well as a 32 KB cluster size.