what is difference if hosts having cluster means if any issue with host or VM's it will move into clustered VM's or another host i guess it is similar to V motion. if we cluster for application e.g file server, dhcp server (roles related cluster, SQL) if any difference?

A host cluster will bring high availability to all VMs hosted on your private cloud, giving all VMs HA.

A Guest Cluster is clustering at the application layer inside of the VM.  It is for when you want to increase your SLA's and have app level health monitoring.

Usually normal VM HA is good enough for most Tier2... but for your Tier1 workloads, you may require even higher levels of availability.

Thanks!
Elden

• Marked as answer by Elden ChristensenMicrosoft employee, Owner 15 hours 19 minutes ago