|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.
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York and Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound cha...
Nov. 25, 2015 02:45 PM EST Reads: 486
Internet of @ThingsExpo, taking place June 7-9, 2016 at Javits Center, New York City and Nov 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with the 18th International @CloudExpo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world and ThingsExpo New York Call for Papers is now open.
Nov. 25, 2015 02:30 PM EST Reads: 495
The cloud. Like a comic book superhero, there seems to be no problem it can’t fix or cost it can’t slash. Yet making the transition is not always easy and production environments are still largely on premise. Taking some practical and sensible steps to reduce risk can also help provide a basis for a successful cloud transition. A plethora of surveys from the likes of IDG and Gartner show that more than 70 percent of enterprises have deployed at least one or more cloud application or workload. Yet a closer inspection at the data reveals less than half of these cloud projects involve production...
Nov. 25, 2015 02:15 PM EST Reads: 418
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Day 2 Keynote at 17th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, wil...
Nov. 25, 2015 02:00 PM EST Reads: 501
Cloud computing delivers on-demand resources that provide businesses with flexibility and cost-savings. The challenge in moving workloads to the cloud has been the cost and complexity of ensuring the initial and ongoing security and regulatory (PCI, HIPAA, FFIEC) compliance across private and public clouds. Manual security compliance is slow, prone to human error, and represents over 50% of the cost of managing cloud applications. Determining how to automate cloud security compliance is critical to maintaining positive ROI. Raxak Protect is an automated security compliance SaaS platform and ma...
Nov. 25, 2015 02:00 PM EST Reads: 344
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu’s platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
Nov. 25, 2015 01:30 PM EST Reads: 456
There are over 120 breakout sessions in all, with Keynotes, General Sessions, and Power Panels adding to three days of incredibly rich presentations and content. Join @ThingsExpo conference chair Roger Strukhoff (@IoT2040), June 7-9, 2016 in New York City, for three days of intense 'Internet of Things' discussion and focus, including Big Data's indespensable role in IoT, Smart Grids and Industrial Internet of Things, Wearables and Consumer IoT, as well as (new) IoT's use in Vertical Markets.
Nov. 25, 2015 12:00 PM EST Reads: 515
Today air travel is a minefield of delays, hassles and customer disappointment. Airlines struggle to revitalize the experience. GE and M2Mi will demonstrate practical examples of how IoT solutions are helping airlines bring back personalization, reduce trip time and improve reliability. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Dr. Sarah Cooper, M2Mi’s VP Business Development and Engineering, explored the IoT cloud-based platform technologies driving this change including privacy controls, data transparency and integration of real time context with p...
Nov. 25, 2015 12:00 PM EST Reads: 360
The Internet of Things (IoT) is growing rapidly by extending current technologies, products and networks. By 2020, Cisco estimates there will be 50 billion connected devices. Gartner has forecast revenues of over $300 billion, just to IoT suppliers. Now is the time to figure out how you’ll make money – not just create innovative products. With hundreds of new products and companies jumping into the IoT fray every month, there’s no shortage of innovation. Despite this, McKinsey/VisionMobile data shows "less than 10 percent of IoT developers are making enough to support a reasonably sized team....
Nov. 25, 2015 10:00 AM EST Reads: 425
We all know that data growth is exploding and storage budgets are shrinking. Instead of showing you charts on about how much data there is, in his General Session at 17th Cloud Expo, Scott Cleland, Senior Director of Product Marketing at HGST, showed how to capture all of your data in one place. After you have your data under control, you can then analyze it in one place, saving time and resources.
Nov. 25, 2015 09:45 AM EST Reads: 108
Just over a week ago I received a long and loud sustained applause for a presentation I delivered at this year’s Cloud Expo in Santa Clara. I was extremely pleased with the turnout and had some very good conversations with many of the attendees. Over the next few days I had many more meaningful conversations and was not only happy with the results but also learned a few new things. Here is everything I learned in those three days distilled into three short points.
Nov. 25, 2015 09:00 AM EST Reads: 264
As organizations realize the scope of the Internet of Things, gaining key insights from Big Data, through the use of advanced analytics, becomes crucial. However, IoT also creates the need for petabyte scale storage of data from millions of devices. A new type of Storage is required which seamlessly integrates robust data analytics with massive scale. These storage systems will act as “smart systems” provide in-place analytics that speed discovery and enable businesses to quickly derive meaningful and actionable insights. In his session at @ThingsExpo, Paul Turner, Chief Marketing Officer at...
Nov. 25, 2015 08:15 AM EST Reads: 345
DevOps is about increasing efficiency, but nothing is more inefficient than building the same application twice. However, this is a routine occurrence with enterprise applications that need both a rich desktop web interface and strong mobile support. With recent technological advances from Isomorphic Software and others, rich desktop and tuned mobile experiences can now be created with a single codebase – without compromising functionality, performance or usability. In his session at DevOps Summit, Charles Kendrick, CTO and Chief Architect at Isomorphic Software, demonstrated examples of com...
Nov. 25, 2015 07:45 AM EST Reads: 341
In his General Session at 17th Cloud Expo, Bruce Swann, Senior Product Marketing Manager for Adobe Campaign, explored the key ingredients of cross-channel marketing in a digital world. Learn how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects).
Nov. 25, 2015 07:30 AM EST Reads: 247
The Internet of Everything is re-shaping technology trends–moving away from “request/response” architecture to an “always-on” Streaming Web where data is in constant motion and secure, reliable communication is an absolute necessity. As more and more THINGS go online, the challenges that developers will need to address will only increase exponentially. In his session at @ThingsExpo, Todd Greene, Founder & CEO of PubNub, exploreed the current state of IoT connectivity and review key trends and technology requirements that will drive the Internet of Things from hype to reality.
Nov. 25, 2015 05:45 AM EST Reads: 376
Two weeks ago (November 3-5), I attended the Cloud Expo Silicon Valley as a speaker, where I presented on the security and privacy due diligence requirements for cloud solutions. Cloud security is a topical issue for every CIO, CISO, and technology buyer. Decision-makers are always looking for insights on how to mitigate the security risks of implementing and using cloud solutions. Based on the presentation topics covered at the conference, as well as the general discussions heard between sessions, I wanted to share some of my observations on emerging trends. As cyber security serves as a fou...
Nov. 25, 2015 05:45 AM EST Reads: 287
Continuous processes around the development and deployment of applications are both impacted by -- and a benefit to -- the Internet of Things trend. To help better understand the relationship between DevOps and a plethora of new end-devices and data please welcome Gary Gruver, consultant, author and a former IT executive who has led many large-scale IT transformation projects, and John Jeremiah, Technology Evangelist at Hewlett Packard Enterprise (HPE), on Twitter at @j_jeremiah. The discussion is moderated by me, Dana Gardner, Principal Analyst at Interarbor Solutions.
Nov. 25, 2015 02:30 AM EST Reads: 681
Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
Nov. 25, 2015 02:00 AM EST Reads: 290
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound effect on the world, and what should we expect to see over the next couple of years.
Nov. 25, 2015 12:30 AM EST Reads: 411
With all the incredible momentum behind the Internet of Things (IoT) industry, it is easy to forget that not a single CEO wakes up and wonders if “my IoT is broken.” What they wonder is if they are making the right decisions to do all they can to increase revenue, decrease costs, and improve customer experience – effectively the same challenges they have always had in growing their business. The exciting thing about the IoT industry is now these decisions can be better, faster, and smarter. Now all corporate assets – people, objects, and spaces – can share information about themselves and thei...
Nov. 25, 2015 12:00 AM EST Reads: 168