Can I Cluster SSAS? (How to minimize downtime during deployment)

Some people asked me if we can cluster SSAS. Yes we can cluster SSAS. SSAS supports clustering natively. This is since 2008 R2. Meaning that, if Server1 dies, clients will automatically access Server2. Just need to Refresh from Excel, SCA, Tableau etc and results will be returned. How does it work in the background? Same as Database Engine: 1 set of disks, 2 servers.