Hi I am currently using Nop 1.9 and I am worried about the size of the thumbs folder. (currently 12000 files)

Since I am keen to add another 3000-5000 products to our store I am worried about file system performance with so many files in one folder. I would like to know others thoughts on that.

Also I havent had a chance to look at 2.0/2.1 yet so im not sure if this problem has been fixed. But if it hasn't how would be the best way to go about separating images?

1. By Size in separate directory - (directory's growing proportionally)
2. By productID (1-1000) (1001-2000) etc
3. By last number of productID ie (0 directory, 1 directory, 2 directory etc) limits products to 10x current limit.

Thanks