when configuring vSan I see this guide:
But I'm not sure what it means. If I want to configure 3 failures tolerated, do I need to have 2*3+1=7 hosts in the vSan cluster? If so - can anyone explain why, exactly? I realize that I need to have 3 replicas, plus at least one (what is it called again - watchmen, or something like that??) so I could see requiring 4 hosts, but how do we get to 7?
Thanx for helping me get clear on this!