High Availability of RHEV-M

Do we have any solution for failover of RHEV Manager for the HA for the Management GUI interface. If yes, kindly share some document regarding the same.

And if the RHEV manager goes down, how the virtual machines will be failed over or load balanced in case of hypervisor failure, if it happens.  Because as per my understanding the manager has inbulit postgres database which contains the infomration of all the vms on the local database but in case manager is down, how the hypervisor will have the information about vm's status and load balancing policy.

Kindly explain or share some document regarding how to achieve the HA for RHEV-M.

Thanks,

Ashish