We can close this.. I'm taking it up a bit more closely directly with the techs.

Thank you again Oleg So, let's start over with the math then. 1. the raid/disk/volume that Starwinds is using for the san is 10TB. We can present 100% of that to VMware with no issues? 2. So VMware get 10TB, and we use the 20% rule for them.. so our max space to use = 8TB (for Virtual Hard drives). ...

Thanks Oleg We are running a 2 node Starwind HyperConvered system. Running on Dell R740s with Vmware sitting on top. Since the VSAN is running on a WINDOWS 2016 Datacenter OS... would we not have to meeting the windows Requirements? Open space for repairs and such? I'm thinking windows throws warnin...

Wondering recommendations and experience with open freespace on a LUN.
Most Best practice for any SAN i've used is to always have 20% open for snap shots, catching etc.

Can't find any printed material on this.

Wondering the options and implications. Want best practice of course.

Thanks Clark