What are the various disk sizes that the simulator supports?

          

Size in ONTAP is reported by df when added to an empty volume and with snap reserve reduced to 0.

setup -u

Size in Linux

Size in ONTAP

Overhead

a 43.3MB 14.4MB 29.9MB (200%)
b 61.7MB 30.8MB 30.9MB (100%)
c 77.8MB 45MB 32.8MB (72%)
d 129MB 90MB 39MB (43%)
e 535MB 450MB 85MB (19%)
f 1042MB 900MB 142MB (15%)

The overhead consists of data checksums (15%) and roughly 20MB for reserved internal space.

The maximum simulator size, assuming you replace the root volume with large disks, is approximately 24GB. This will consume 28.5GB of space in Linux. The difference is mostly taken up by data checksums (15%).