|By Kevin Remde||
|October 5, 2012 08:00 AM EDT||
Hyper-V in Windows Server 2012 (and in the free Microsoft Hyper-V Server include an easy start to a good disaster recovery solution: Hyper-V Replica. With Hyper-V Replica you can easily create and maintain an off-line copy – a replica – of a virtual machine on a separate virtualization host. This means, for example, that if your main location or host for an important virtual machine goes down becomes unavailable, you can easily fail-over to the replica. The copy will start up and be available in short-order.
“That sounds really great, Kevin! But what does it cost to set this up?”
“How do I set it up?”
I’m glad you asked. There are really two simple requirements to make it happen:
- You need to be running Windows Server 2012 with the Hyper-V Role installed (or Microsoft Hyper-V Server 2012) on both the source and destination virtualization hosts, and
- You need network connectivity between them. (and don’t forget the firewall)
Here are my 6 steps to working with Hyper-V Replica:
1. Configuring the Hosts to Allow Replication
In Hyper-V Manager, right-click on, or select the host, and choose Hyper-V Settings…
On the left, select Replication Configuration, and then enable and configure your replication options.
2. Setting up a Replica
To configure the replica using Hyper-V Manager, right click on the VM you want to replicate and choose Enable Replication…
On the Before You Begin page, click Next
On the Specify Replica Server page, Enter the name of the server that is to be the replication host.
The Specify Connection Parameters page is, um, where you specify your connection parameters.
Choose the hard disks you want to replicate on the Choose Replication VHDs page.
On the Configure Recovery History page, choose whether you want to keep just the most recent recovery point, or perhaps maintain a number of points in the past that you could recover to. You also have the option to occasionally perform a VSS copy.
On the Choose Initial Replication Method page, notice that you have options on how you want that big initial replication to take place. Maybe you don’t want to use the network for that initial large transfer, but instead would prefer to use UPS or FedEx.
Then click Finish on the summary page, and you’re all set.
If all was configured properly, you’ll see a new VM appear on the replication host that will be turned off.
3. Verifying the Replica’s Status
You can easily verify the status of your replica by selecting either your original VM or your replica VM in Hyper-V Manager, right-click the VM, click Replication, and then View Replication Health.
4. Testing the Replica
You can test your replicated machine by right-clicking on the replica VM and under Replication select Test Failover…
Pick the point in time that you want to test, and click Test Failover.
This will create a linked copy VM with the text “ – Test” appended to the name. Simply start up that VM (go ahead. It isn’t connected to the network, so it won’t interfere with anything) and verify that it is a useable machine.
5. Disaster Strikes! Time to Fail Over
The unthinkable has happened. Time to act. Your original and important production VM is no longer available.
On the replica VM, right click. Under Replication, select Failover.
Select the recovery point, and click Fail Over.
And your replica will start up configured, networked, and ready to take on Dr. Proton.
6. Removing the Replica
Easy. On both the source and replica VMs, right click. Under Replication, select Remove Replication.
Now you can safely delete your replica from the replication host.
Simple, yes? Do you have any questions?
“Can I have the failover happen automatically?”
Not natively. In its most simple form, Hyper-V Replica is a manual failover. However, because you can use PowerShell to drive this entire process, there’s no reason why you (or some third party) couldn’t develop a solution that monitors the state of the source VM and launches a script (or some automation in System Center 2012 Orchestrator) to launch the failover.
“But do I need to have Active Directory? Or do both of my virtualization hosts need to be in the same domain?”
Actually, no. You have the option of using certificate authentication to make the trusted configuration. (CLICK HERE for details on how to use certificates for Hyper-V Replica.)
“Do my virtual machines need to be running particular operating systems for this to work?”
Nope. There is nothing required of the guest operating system. You could be running the original Duke Nukum on DOS 6.22 in your VM, and this will still work.
Currently the answer to that is no. But I’ve heard this question enough times, and really it does make sense.. so I have to imagine (and that’s all I personally have to go on) that Microsoft is considering doing that. Consider the ramifications, though… setting up a replica means configuring something beyond just standing up a virtual machine in Hyper-V.. so the process has to have the ability to manipulate the hypervisor. I could see it happening sometime, but I don’t know when.
“Can I replicate machines that are in clusters? And can I replicate into or out of another cluster?”
Yes and yes. You will think of the cluster as and treat it as a single machine. And to do that there is a special role that you need to add to the cluster called the Hyper-V Replica Broker. This defines a new named entity that becomes either the source or the destination for replicas coming into or out of a cluster. For more details on this, check out this Wiki article.
“What about PowerShell? Can I use PowerShell to set up a replica? Can I use it to do the failover or even get status on current replicas?”
Yes, yes, and yes.
For example, to configure the replica destination host, you could use these commands to configure the firewall to allow inbound replication on the destination, and set a server up as a new replication host (each numbered line is a separate complete PowerShell command or script line):
- Enable-Netfirewallrule -displayname "Hyper-V Replica HTTP Listener (TCP-In)”
- Import-Module Hyper-V
- $RecoveryPort = 8080
- $ReplicaStorageLocation = “D:\Example”
- Set-VMReplicationServer -ReplicationEnabled $true -AllowedAuthenticationType Kerberos -IntegratedAuthenticationPort $RecoveryPort -DefaultStorageLocation $ReplicaStorageLocation -ReplicationAllowedFromAnyServer $true
And then to create a replication (each numbered line is a separate complete PowerShell command or script line):
- Import-Module Hyper-V
- $ReplicaServer = “Recovery1.contoso.com”
- $RecoveryPort = 8080
- $PrimaryVM1 = “CRMVM”
- $PrimaryServer = “Primary1.contoso.com”
- Enable-VMReplication -VMName $PrimaryVM1 -ReplicaServerName $ReplicaServer -ReplicaServerPort $RecoveryPort -AuthenticationType Kerberos -CompressionEnabled $true -RecoveryHistory 0
- Start-VMInitialReplication –VMName $PrimaryVM1
For the full story, here is the Microsoft online documentation of Hyper-V Replica: Hyper-V Replica Overview - http://technet.microsoft.com/en-us/library/jj134172.aspx
(NOTE: as of today, the online documents are still based on the RC code. I’m sure it will be updated soon to work with RTM.)
And to give Windows Server 2012 a try,
- CLICK HERE for the evaluation,
- CLICK HERE for the Hyper-V Server 2012 download, or
- CLICK HERE to learn more at the Microsoft Virtual Academy.
So what do you think? Good stuff? Let’s discuss in the comments.
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
Feb. 7, 2016 03:30 PM EST Reads: 370
The cloud promises new levels of agility and cost-savings for Big Data, data warehousing and analytics. But it’s challenging to understand all the options – from IaaS and PaaS to newer services like HaaS (Hadoop as a Service) and BDaaS (Big Data as a Service). In her session at @BigDataExpo at @ThingsExpo, Hannah Smalltree, a director at Cazena, will provide an educational overview of emerging “as-a-service” options for Big Data in the cloud. This is critical background for IT and data profes...
Feb. 7, 2016 02:45 PM EST Reads: 140
SYS-CON Events announced today that VAI, a leading ERP software provider, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. VAI (Vormittag Associates, Inc.) is a leading independent mid-market ERP software developer renowned for its flexible solutions and ability to automate critical business functions for the distribution, manufacturing, specialty retail and service sectors. An IBM Premier Business Part...
Feb. 7, 2016 02:00 PM EST Reads: 557
SYS-CON Events announced today that Alert Logic, Inc., the leading provider of Security-as-a-Service solutions for the cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Alert Logic, Inc., provides Security-as-a-Service for on-premises, cloud, and hybrid infrastructures, delivering deep security insight and continuous protection for customers at a lower cost than traditional security solutions. Ful...
Feb. 7, 2016 01:45 PM EST Reads: 361
Fortunately, meaningful and tangible business cases for IoT are plentiful in a broad array of industries and vertical markets. These range from simple warranty cost reduction for capital intensive assets, to minimizing downtime for vital business tools, to creating feedback loops improving product design, to improving and enhancing enterprise customer experiences. All of these business cases, which will be briefly explored in this session, hinge on cost effectively extracting relevant data from ...
Feb. 7, 2016 01:30 PM EST
With the Apple Watch making its way onto wrists all over the world, it’s only a matter of time before it becomes a staple in the workplace. In fact, Forrester reported that 68 percent of technology and business decision-makers characterize wearables as a top priority for 2015. Recognizing their business value early on, FinancialForce.com was the first to bring ERP to wearables, helping streamline communication across front and back office functions. In his session at @ThingsExpo, Kevin Roberts...
Feb. 7, 2016 12:00 PM EST Reads: 344
SYS-CON Events announced today that Interoute, owner-operator of one of Europe's largest networks and a global cloud services platform, has been named “Bronze Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. Interoute is the owner-operator of one of Europe's largest networks and a global cloud services platform which encompasses 12 data centers, 14 virtual data centers and 31 colocation centers, with connections to 195 ad...
Feb. 7, 2016 11:30 AM EST Reads: 346
With an estimated 50 billion devices connected to the Internet by 2020, several industries will begin to expand their capabilities for retaining end point data at the edge to better utilize the range of data types and sheer volume of M2M data generated by the Internet of Things. In his session at @ThingsExpo, Don DeLoach, CEO and President of Infobright, will discuss the infrastructures businesses will need to implement to handle this explosion of data by providing specific use cases for filte...
Feb. 7, 2016 10:15 AM EST Reads: 108
As enterprises work to take advantage of Big Data technologies, they frequently become distracted by product-level decisions. In most new Big Data builds this approach is completely counter-productive: it presupposes tools that may not be a fit for development teams, forces IT to take on the burden of evaluating and maintaining unfamiliar technology, and represents a major up-front expense. In his session at @BigDataExpo at @ThingsExpo, Andrew Warfield, CTO and Co-Founder of Coho Data, will dis...
Feb. 7, 2016 07:00 AM EST Reads: 121
SYS-CON Events announced today that Fusion, a leading provider of cloud services, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Fusion, a leading provider of integrated cloud solutions to small, medium and large businesses, is the industry's single source for the cloud. Fusion's advanced, proprietary cloud service platform enables the integration of leading edge solutions in the cloud, including clou...
Feb. 6, 2016 03:30 PM EST Reads: 720
Most people haven’t heard the word, “gamification,” even though they probably, and perhaps unwittingly, participate in it every day. Gamification is “the process of adding games or game-like elements to something (as a task) so as to encourage participation.” Further, gamification is about bringing game mechanics – rules, constructs, processes, and methods – into the real world in an effort to engage people. In his session at @ThingsExpo, Robert Endo, owner and engagement manager of Intrepid D...
Feb. 5, 2016 09:00 PM EST Reads: 785
Eighty percent of a data scientist’s time is spent gathering and cleaning up data, and 80% of all data is unstructured and almost never analyzed. Cognitive computing, in combination with Big Data, is changing the equation by creating data reservoirs and using natural language processing to enable analysis of unstructured data sources. This is impacting every aspect of the analytics profession from how data is mined (and by whom) to how it is delivered. This is not some futuristic vision: it's ha...
Feb. 2, 2016 02:00 PM EST Reads: 411
WebRTC has had a real tough three or four years, and so have those working with it. Only a few short years ago, the development world were excited about WebRTC and proclaiming how awesome it was. You might have played with the technology a couple of years ago, only to find the extra infrastructure requirements were painful to implement and poorly documented. This probably left a bitter taste in your mouth, especially when things went wrong.
Feb. 2, 2016 04:30 AM EST Reads: 851
Learn how IoT, cloud, social networks and last but not least, humans, can be integrated into a seamless integration of cooperative organisms both cybernetic and biological. This has been enabled by recent advances in IoT device capabilities, messaging frameworks, presence and collaboration services, where devices can share information and make independent and human assisted decisions based upon social status from other entities. In his session at @ThingsExpo, Michael Heydt, founder of Seamless...
Feb. 1, 2016 05:00 AM EST Reads: 940
The IoT's basic concept of collecting data from as many sources possible to drive better decision making, create process innovation and realize additional revenue has been in use at large enterprises with deep pockets for decades. So what has changed? In his session at @ThingsExpo, Prasanna Sivaramakrishnan, Solutions Architect at Red Hat, discussed the impact commodity hardware, ubiquitous connectivity, and innovations in open source software are having on the connected universe of people, thi...
Jan. 31, 2016 09:00 PM EST Reads: 726
WebRTC: together these advances have created a perfect storm of technologies that are disrupting and transforming classic communications models and ecosystems. In his session at WebRTC Summit, Cary Bran, VP of Innovation and New Ventures at Plantronics and PLT Labs, provided an overview of this technological shift, including associated business and consumer communications impacts, and opportunities it may enable, complement or entirely transform.
Jan. 31, 2016 07:15 PM EST Reads: 1,146
For manufacturers, the Internet of Things (IoT) represents a jumping-off point for innovation, jobs, and revenue creation. But to adequately seize the opportunity, manufacturers must design devices that are interconnected, can continually sense their environment and process huge amounts of data. As a first step, manufacturers must embrace a new product development ecosystem in order to support these products.
Jan. 31, 2016 10:00 AM EST Reads: 812
There are so many tools and techniques for data analytics that even for a data scientist the choices, possible systems, and even the types of data can be daunting. In his session at @ThingsExpo, Chris Harrold, Global CTO for Big Data Solutions for EMC Corporation, showed how to perform a simple, but meaningful analysis of social sentiment data using freely available tools that take only minutes to download and install. Participants received the download information, scripts, and complete end-t...
Jan. 31, 2016 10:00 AM EST Reads: 1,217
Manufacturing connected IoT versions of traditional products requires more than multiple deep technology skills. It also requires a shift in mindset, to realize that connected, sensor-enabled “things” act more like services than what we usually think of as products. In his session at @ThingsExpo, David Friedman, CEO and co-founder of Ayla Networks, discussed how when sensors start generating detailed real-world data about products and how they’re being used, smart manufacturers can use the dat...
Jan. 30, 2016 07:45 PM EST Reads: 791
When it comes to IoT in the enterprise, namely the commercial building and hospitality markets, a benefit not getting the attention it deserves is energy efficiency, and IoT’s direct impact on a cleaner, greener environment when installed in smart buildings. Until now clean technology was offered piecemeal and led with point solutions that require significant systems integration to orchestrate and deploy. There didn't exist a 'top down' approach that can manage and monitor the way a Smart Buildi...
Jan. 30, 2016 03:45 PM EST Reads: 1,268