Actual usable space

[UNIXGNURU]

If I assign 100 TB of vmdks to Ontap Select, what is the actual usable space due to aggregate, volume and disk overhead?

[SpindleNinja]

"It all depends" is the best answer I can give over the forum. 

Depends on what version of ONTAP select your running and your hardware under it (SSDs vs Spining)  

Have you reviewed the Select TR https://www.netapp.com/us/media/tr-4517.pdf