Click here to close now.




















Welcome!

Silverlight Authors: Srinivasan Sundara Rajan, Yeshim Deniz, Greg O'Connor, Trevor Parsons, AppDynamics Blog

Blog Feed Post

31 Days of our Favorite Things: Windows Server 2012 and Hyper-V Replica (Part 5 of 31)

Hyper-V POWER!

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?”

Absolutely nothing, other than what you’ve already paid for (the OS).  Hyper-V Replica is just a capability that is included with Windows Server 2012 Hyper-V and Hyper-V Server

“How do I set it up?”

I’m glad you asked.  There are really two simple requirements to make it happen:

  1. 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
  2. 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.

image

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…

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.

Specify Replica Server

Click Next.

The Specify Connection Parameters page is, um, where you specify your connection parameters.

Specify Connection Parameters

Click Next.

Choose the hard disks you want to replicate on the Choose Replication VHDs page.

Choose Replication VHDs

Click Next.

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.

Configure Recovery History

Click Next.

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.

Choose Initial Replication Method

Then click Finish on the summary page, and you’re all set.

image

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.

View Replication Health

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…

Test Failover

Pick the point in time that you want to test, and click Test Failover.

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.

Failover!

Select the recovery point, and click Fail Over.

image

And your replica will start up configured, networked, and ready to take on Dr. Proton.

Recovered VM

6. Removing the Replica

Easy.  On both the source and replica VMs, right click.  Under Replication, select Remove Replication

image

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.

“I’ve heard good things about using Windows Azure for hosting my virtual machines and extending my datacenter into the cloud.  Can I create my replica up in my Windows Azure account?” 

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):

  1. Enable-Netfirewallrule -displayname "Hyper-V Replica HTTP Listener (TCP-In)”
  2. Import-Module Hyper-V
  3. $RecoveryPort = 8080
  4. $ReplicaStorageLocation = “D:\Example”
  5. 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):

  1. Import-Module Hyper-V
  2. $ReplicaServer = “Recovery1.contoso.com”
  3. $RecoveryPort = 8080
  4. $PrimaryVM1 = “CRMVM”
  5. $PrimaryServer = “Primary1.contoso.com”
  6. Enable-VMReplication -VMName $PrimaryVM1 -ReplicaServerName $ReplicaServer -ReplicaServerPort $RecoveryPort -AuthenticationType Kerberos -CompressionEnabled $true -RecoveryHistory 0
  7. 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,

---

So what do you think?  Good stuff?  Let’s discuss in the comments.

Read the original blog entry...

More Stories By Kevin Remde

Kevin is an engaging and highly sought-after speaker and webcaster who has landed several times on Microsoft's top 10 webcast list, and has delivered many top-scoring TechNet events and webcasts. In his past outside of Microsoft, Kevin has held positions such as software engineer, information systems professional, and information systems manager. He loves sharing helpful new solutions and technologies with his IT professional peers.

A prolific blogger, Kevin shares his thoughts, ideas and tips on his “Full of I.T.” blog (http://aka.ms/FullOfIT). He also contributes to and moderates the TechNet Forum IT Manager discussion (http://aka.ms/ITManager), and presents live TechNet Events throughout the central U.S. (http://www.technetevents.com). When he's not busy learning or blogging about new technologies, Kevin enjoys digital photography and videography, and sings in a band. (Q: Midlife crisis? A: More cowbell!) He continues to challenge his TechNet Event audiences to sing Karaoke with him.

@ThingsExpo Stories
The Internet of Things (IoT) is about the digitization of physical assets including sensors, devices, machines, gateways, and the network. It creates possibilities for significant value creation and new revenue generating business models via data democratization and ubiquitous analytics across IoT networks. The explosion of data in all forms in IoT requires a more robust and broader lens in order to enable smarter timely actions and better outcomes. Business operations become the key driver of IoT applications and projects. Business operations, IT, and data scientists need advanced analytics t...
SYS-CON Events announced today that IceWarp will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IceWarp, the leader of cloud and on-premise messaging, delivers secured email, chat, documents, conferencing and collaboration to today's mobile workforce, all in one unified interface
A producer of the first smartphones and tablets, presenter Lee M. Williams will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater. In his session at @ThingsExpo, Lee Williams, COO of ETwater, will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater.
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.
Consumer IoT applications provide data about the user that just doesn’t exist in traditional PC or mobile web applications. This rich data, or “context,” enables the highly personalized consumer experiences that characterize many consumer IoT apps. This same data is also providing brands with unprecedented insight into how their connected products are being used, while, at the same time, powering highly targeted engagement and marketing opportunities. In his session at @ThingsExpo, Nathan Treloar, President and COO of Bebaio, will explore examples of brands transforming their businesses by t...
SYS-CON Events announced today that Pythian, a global IT services company specializing in helping companies leverage disruptive technologies to optimize revenue-generating systems, has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Founded in 1997, Pythian is a global IT services company that helps companies compete by adopting disruptive technologies such as cloud, Big Data, advanced analytics, and DevOps to advance innovation and increase agility. Specializing in designing, imple...
While many app developers are comfortable building apps for the smartphone, there is a whole new world out there. In his session at @ThingsExpo, Narayan Sainaney, Co-founder and CTO of Mojio, will discuss how the business case for connected car apps is growing and, with open platform companies having already done the heavy lifting, there really is no barrier to entry.
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Through WebRTC, audio and video communications are being embedded more easily than ever into applications, helping carriers, enterprises and independent software vendors deliver greater functionality to their end users. With today’s business world increasingly focused on outcomes, users’ growing calls for ease of use, and businesses craving smarter, tighter integration, what’s the next step in delivering a richer, more immersive experience? That richer, more fully integrated experience comes about through a Communications Platform as a Service which allows for messaging, screen sharing, video...
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of technology leadership, Micron's memory solutions enable the world's most innovative computing, consumer,...
As more intelligent IoT applications shift into gear, they’re merging into the ever-increasing traffic flow of the Internet. It won’t be long before we experience bottlenecks, as IoT traffic peaks during rush hours. Organizations that are unprepared will find themselves by the side of the road unable to cross back into the fast lane. As billions of new devices begin to communicate and exchange data – will your infrastructure be scalable enough to handle this new interconnected world?
As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of streaming data in the cloud with an enterprise grade SLA. It features built-in integration with Azur...
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.
With the proliferation of connected devices underpinning new Internet of Things systems, Brandon Schulz, Director of Luxoft IoT – Retail, will be looking at the transformation of the retail customer experience in brick and mortar stores in his session at @ThingsExpo. Questions he will address include: Will beacons drop to the wayside like QR codes, or be a proximity-based profit driver? How will the customer experience change in stores of all types when everything can be instrumented and analyzed? As an area of investment, how might a retail company move towards an innovation methodolo...
Akana has announced the availability of the new Akana Healthcare Solution. The API-driven solution helps healthcare organizations accelerate their transition to being secure, digitally interoperable businesses. It leverages the Health Level Seven International Fast Healthcare Interoperability Resources (HL7 FHIR) standard to enable broader business use of medical data. Akana developed the Healthcare Solution in response to healthcare businesses that want to increase electronic, multi-device access to health records while reducing operating costs and complying with government regulations.
For IoT to grow as quickly as analyst firms’ project, a lot is going to fall on developers to quickly bring applications to market. But the lack of a standard development platform threatens to slow growth and make application development more time consuming and costly, much like we’ve seen in the mobile space. In his session at @ThingsExpo, Mike Weiner, Product Manager of the Omega DevCloud with KORE Telematics Inc., discussed the evolving requirements for developers as IoT matures and conducted a live demonstration of how quickly application development can happen when the need to comply wit...
The Internet of Everything (IoE) brings together people, process, data and things to make networked connections more relevant and valuable than ever before – transforming information into knowledge and knowledge into wisdom. IoE creates new capabilities, richer experiences, and unprecedented opportunities to improve business and government operations, decision making and mission support capabilities.
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at @ThingsExpo, James Kirkland, Red Hat's Chief Architect for the Internet of Things and Intelligent Systems, described how to revolutionize your archit...
MuleSoft has announced the findings of its 2015 Connectivity Benchmark Report on the adoption and business impact of APIs. The findings suggest traditional businesses are quickly evolving into "composable enterprises" built out of hundreds of connected software services, applications and devices. Most are embracing the Internet of Things (IoT) and microservices technologies like Docker. A majority are integrating wearables, like smart watches, and more than half plan to generate revenue with APIs within the next year.
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 Opening Keynote at 16th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, d...