After I published the vSphere Flash Read Cache FAQ many asked if I would also do a blog post for frequently asked questions about Virtual SAN / VSAN. I guess it makes sense considering Virtual SAN / VSAN being such a hot topic. So here are the questions I have received so far, followed by the answers of course. If you have a question do not hesitate to leave a comment.

Make sure to visit the VSAN community forum and sign up for the beta!

  • VSAN requires an SSD, what is it used for?
    • The SSD is used for read caching (70%) and write buffering (30%). Every write will go to SSD first and will be destaged to HDD later.

--> Please see the rest on Duncan's post on Yellow Bricks: http://www.yellow-bricks.com/2013/09/16/frequently-asked-questions-virtual-san-vsan/