Assuming FTT=1,RAID=1 Storage Policy and the VMware recommended ~25% slack space, 92TB usable = 230TB raw, thus I don't see what the issue with this is.
"Looking at another 45TB cluster i deployed last year i have 5 nodes with 8 x 1.2TB capacity disk per node giving me 43TB raw and basically the same useable. The overhead is only about 700GB."
43TB raw and "basically the same useable" implies everything here is FTT=0 and you are not caring for slack space recommendations (both of which choices are by all means your own choices).
"So whats the crack?"
Sorry, pedantic Irish person here - the phrase is "What's the Craic" assuming you meant 'what is up with this'
No yes i think penny has dropped. I was expecting useable to be the actual figure you see in vSphere but you actually see 230TB but taking into consideration what you actually need + overheads + FTT RAID etc.
Yes i meant craic haha