What Allocation Unit Size Should I Use for an NTFS Flash Drive? For flash drives larger than 16 GB, an allocation unit size of 16 KB is recommended.

Based on the Allocation unit size, you will see different Size on disk for the same file. Usually, the “Size on disk” is greater than the actual size of a file.

everytime i add a brand new hd on my computer and on other people's computers i usually format them using "default" allocation unit size. what is that? is that the same as a cluster size?<P>if so ...

I'd like to know about allocation unit size though. I'll be using the disk exclusively for video (capturing DV and editing with Premiere).