Hacking Questions about Wii U NAND dumping

[Devrim]

I'm going to dump my Wii U NAND with the Wii U NAND Dumper tomorrow and I have 2 questions

1. Does the dumper create a hash so we can check the integrity of the dump?

2. If I remove apps installed on my NAND will the NAND dump easier to compress? Does empty NAND space get output as 0's in the dump?

 

[piratesephiroth]

No, I think you have to make a hash yourself if you want that.
The NAND is encrypted so compression won't help.