Hardware failure, software bugs, human error, a natural disaster, or any of countless other events could suddenly render your business-critical services, or even an entire datacenter, unavailable.
The Hyper-V replication feature can create and maintain exact copies (replicas) of source Hyper-V VMs on a target host. The replicas are regular powered-off VMs, which don’t require any resources. In a disaster scenario, you can simply power on the replicas for near-instant recovery.
Hyper-V Replication Features
Application and Database Support
Since applications and databases constantly process data in memory, simply copying the data stored on disk is not enough. NAKIVO Backup & Replication features an Application-Aware mode, which ensures that applications such as Microsoft Exchange, Microsoft Active Directory, and Microsoft SQL flush data from memory to disk before a replica is made. This guarantees that replicas are application-consistent.
By default, all Hyper-V replication jobs are forever-incremental, which means that only the initial replication creates a complete copy of a source Hyper-V VM.
For every job thereafter, the product detects changed blocks of data (increments) and merges them with the VM replica, leaving the previous state of the Hyper-V VM as a new recovery point.
Flexible Recovery Point Retention Policy
NAKIVO Backup & Replication can save up to 30 recovery points for each Hyper-V VM replica. You can use the Grandfather-Father-Son (GFS) retention scheme to rotate recovery points on a daily, weekly, monthly, and yearly basis. Recovery points are regular Hyper-V VM snapshots, so you can roll back to any recovery point even without NAKIVO Backup & Replication.
Staged VM Replication (Seeding)
The first Hyper-V replication may consume a lot of time or bandwidth, because the VMs, which might hold large amounts of data, need to be fully copied. To speed up this process and offload your network, you can perform a staged replication. This means that you perform the initial VM replication onto a removable media device, and then move those replicas to your target location.