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IT Disaster recovery

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With today’s Covid-19 situation, many customers are in business continuity mode and yet need a highly reliable way to continue working. So you have Hyper-V Replica. It is an asynchronous, virtual machines replication technology that is designed for business continuity and disaster recovery.

DR with Hyper-V Replica

Are you Using Hyper-V as your Hypervisor? blessed are you because Hyper-V since 2012 R2 have had possibly the best disaster recovery capability built-in at no additional cost. It is called Hyper-V Replica.

It allows you to replicate as many VMs from production site to DR site and even thereon to a 2nd DR site. In addition, you have 3 RPOs to choose from which are 30 seconds, 5 mins and 15 mins.

To mitigate a rack failure:

Replicate the VMs from one rack to another using the 30 seconds RPO.

To mitigate a site failure:

Replicate from this to another physical location using either the 5 minute or 15 minutes RPO.

The choice of 5 or 15 minutes RPO is entirely up to you. However, you cannot use 30 seconds because the 1st replication is already using it.

Hyper-V Replica works with

  •   Any Server Vendor
  •   Any Network Vendor
  •   Any Storage Vendor
  •   Also unlimited replication is available out of the box

Some people are initially confused about when to use Hyper-V Replica and when to use Hyper-
V live migration. Hyper-V Replica keeps up-to-date copies of your virtual machines in case of a
disaster, and allows you to switch to those copies when required. This is usually an unplanned
event.However, Hyper-V live migration is about planned events—
moving your virtual machines and their associated storage across different locations when
required.

Hyper-V Replica provides virtual machine replication for any of your servers, networks, or storage vendors. It does not require a failover cluster or any shared storage. You can replicate individual or multiple virtual machines.
You can replicate your virtual machines from one computer running Hyper-V at a primary site (the primary server) to another computer running Hyper-V at a Replica site (the Replica server). Keep in mind that your Replica server can accept incoming replication traffic from one or more primary servers.

Hyper-V Replica Benefits

 

1. Hyper-V Replica allows you, in the event of a failure at a primary site (for example, fire, power outage, or server failure), to fail over your production workloads to Replica servers at a secondary location with minimal downtime.

 

2. Configurations for the Hyper-V Replica server and storage hardware at each site do not have to be identical. Domain membership is also not required.

 

3. Hyper-V Replica provides the option to restore virtualized workloads to a point in time, depending on the recovery history selections for the virtual machine.

 

4. Hyper-V Replica provides the necessary management APIs that enable IT management vendors to build an enterprise disaster recovery solution for their customers.

 

5. Hyper-V Replica enables Infrastructure as a Service (IaaS) for hosting providers that host dedicated virtual servers for their customers.