Generally here I will share blogs about vSAN.
Version 9
vSphere deployment – Cleaning up vSAN after failed vCenter deployment
Older topics (version 7 and below):
2-Node stretched clusters
Stretched vSAN 6.6 upgrade to vSAN 7 – Part 1
Stretched vSAN 7, replacing the witness node – Part 2
Stretched vSAN 7, completing the upgrade – Part 3