Best Allocation Unit Size on flash drive with exFAT having small files

Question

I have a lot of files that fluctuate between 1 and 50KB on a SCSI USB connected SSD. What would be the best allocation unit size to choose when formatting it to exFAT?

I am wondering what would be the fastest in reading / writing. I am considering 64K, although 32K seems better. I hope someone can help me figure out what is the smartest move to make!

Answer 1

After some testing (thanks to a friend) I got these results:

After formatting it to exFAT with the allocation size set to:

• Default: The size on disk is 5.8GB
• 8192: The size on disk is 4.26GB
• 16K: The size on disk is 4.47GB

So to conclude: 8192 (~ 8K) obviously wins when it comes to small files and Android project related files.