From the Microsoft Virtualisation Blog:
We are excited to announce the General Availability of Hyper-V Recovery Manager or HRM for short. HRM is an Azure hosted service which orchestrates the protection and recovery of virtual machines in your datacenter. Hyper-V Replica replicates your virtual machines from your primary datacenter to your secondary datacenter. To re-emphasize, your VMs are not replicated to Windows Azure. HRM is a service hosted in Azure which acts as the “control plane”.
The high level solution is as follows:
A step by step guide on setting up HRM is available @ http://www.windowsazure.com/en-us/documentation/articles/hyper-v-recovery-manager-configure-vault/
If you have questions on HRM, visit the TechNet forum @ http://social.msdn.microsoft.com/Forums/windowsazure/en-US/home?forum=hypervrecovmgr
Pricing, SLA details for the service is available @ http://www.windowsazure.com/en-us/pricing/details/recovery-manager/
Brad Anderson’s blog on HRM – http://blogs.technet.com/b/in_the_cloud/archive/2014/01/16/announcing-the-ga-of-windows-azure-hyper-v-recovery-manager.aspx – provides more details on the solution.