EXTRASPHERE

Extrasphere is a set of tools for managing VM data in vSphere environments, including VM migration, proxy VMFS and hot mirroring. VM migration. Extrasphere provides unique technology of VM disks and configuration migration without downtime in any vSphere 5.5-6.5 environment. Proxy VMFS Allows mounting a local datastore from remote ESXi host over NFS. Hot mirroring. Hot mirroring - keep a fully in-sync stand-by copy of your production VM for testing/DR purposes. It's better than VM replication - it's a mirror!