|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 Outlyer, a monitoring service for DevOps and operations teams, has been named “Bronze Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Outlyer is a monitoring service for DevOps and Operations teams running Cloud, SaaS, Microservices and IoT deployments. Designed for today's dynamic environments that need beyond cloud-scale monitoring, we make monitoring effortless so you ...
Mar. 27, 2017 02:15 AM EDT Reads: 4,133
My team embarked on building a data lake for our sales and marketing data to better understand customer journeys. This required building a hybrid data pipeline to connect our cloud CRM with the new Hadoop Data Lake. One challenge is that IT was not in a position to provide support until we proved value and marketing did not have the experience, so we embarked on the journey ourselves within the product marketing team for our line of business within Progress. In his session at @BigDataExpo, Sum...
Mar. 27, 2017 01:45 AM EDT Reads: 2,876
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor - all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organization...
Mar. 27, 2017 01:15 AM EDT Reads: 1,815
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm.
Mar. 27, 2017 12:45 AM EDT Reads: 2,011
What sort of WebRTC based applications can we expect to see over the next year and beyond? One way to predict development trends is to see what sorts of applications startups are building. In his session at @ThingsExpo, Arin Sime, founder of WebRTC.ventures, will discuss the current and likely future trends in WebRTC application development based on real requests for custom applications from real customers, as well as other public sources of information,
Mar. 27, 2017 12:30 AM EDT Reads: 827
China Unicom exhibit at the 19th International Cloud Expo, which took place at the Santa Clara Convention Center in Santa Clara, CA, in November 2016. China United Network Communications Group Co. Ltd ("China Unicom") was officially established in 2009 on the basis of the merger of former China Netcom and former China Unicom. China Unicom mainly operates a full range of telecommunications services including mobile broadband (GSM, WCDMA, LTE FDD, TD-LTE), fixed-line broadband, ICT, data communica...
Mar. 27, 2017 12:00 AM EDT Reads: 3,326
With the introduction of IoT and Smart Living in every aspect of our lives, one question has become relevant: What are the security implications? To answer this, first we have to look and explore the security models of the technologies that IoT is founded upon. In his session at @ThingsExpo, Nevi Kaja, a Research Engineer at Ford Motor Company, will discuss some of the security challenges of the IoT infrastructure and relate how these aspects impact Smart Living. The material will be delivered i...
Mar. 26, 2017 09:45 PM EDT Reads: 2,042
Apache Hadoop is emerging as a distributed platform for handling large and fast incoming streams of data. Predictive maintenance, supply chain optimization, and Internet-of-Things analysis are examples where Hadoop provides the scalable storage, processing, and analytics platform to gain meaningful insights from granular data that is typically only valuable from a large-scale, aggregate view. One architecture useful for capturing and analyzing streaming data is the Lambda Architecture, represent...
Mar. 26, 2017 08:30 PM EDT Reads: 6,131
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 meaningf...
Mar. 26, 2017 07:45 PM EDT Reads: 9,591
Your homes and cars can be automated and self-serviced. Why can't your storage? From simply asking questions to analyze and troubleshoot your infrastructure, to provisioning storage with snapshots, recovery and replication, your wildest sci-fi dream has come true. In his session at @DevOpsSummit at 20th Cloud Expo, Dan Florea, Director of Product Management at Tintri, will provide a ChatOps demo where you can talk to your storage and manage it from anywhere, through Slack and similar services ...
Mar. 26, 2017 06:45 PM EDT Reads: 4,269
SYS-CON Events announced today that Ocean9will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Ocean9 provides cloud services for Backup, Disaster Recovery (DRaaS) and instant Innovation, and redefines enterprise infrastructure with its cloud native subscription offerings for mission critical SAP workloads.
Mar. 26, 2017 06:30 PM EDT Reads: 2,050
The taxi industry never saw Uber coming. Startups are a threat to incumbents like never before, and a major enabler for startups is that they are instantly “cloud ready.” If innovation moves at the pace of IT, then your company is in trouble. Why? Because your data center will not keep up with frenetic pace AWS, Microsoft and Google are rolling out new capabilities In his session at 20th Cloud Expo, Don Browning, VP of Cloud Architecture at Turner, will posit that disruption is inevitable for c...
Mar. 26, 2017 05:00 PM EDT Reads: 2,145
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
Mar. 26, 2017 02:30 PM EDT Reads: 1,794
SYS-CON Events announced today that Conference Guru has been named “Media Sponsor” of SYS-CON's 20th International Cloud Expo, which will take place on June 6–8, 2017, at the Javits Center in New York City, NY. A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great dea...
Mar. 26, 2017 02:15 PM EDT Reads: 4,384
SYS-CON Events announced today that Technologic Systems Inc., an embedded systems solutions company, will exhibit at SYS-CON's @ThingsExpo, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Technologic Systems is an embedded systems company with headquarters in Fountain Hills, Arizona. They have been in business for 32 years, helping more than 8,000 OEM customers and building over a hundred COTS products that have never been discontinued. Technologic Systems’ pr...
Mar. 26, 2017 02:00 PM EDT Reads: 3,392
SYS-CON Events announced today that CA Technologies has been named “Platinum Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business – from apparel to energy – is being rewritten by software. From ...
Mar. 26, 2017 01:45 PM EDT Reads: 1,845
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend @CloudExpo | @ThingsExpo, June 6-8, 2017, at the Javits Center in New York City, NY and October 31 - November 2, 2017, Santa Clara Convention Center, CA. Learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
Mar. 26, 2017 01:45 PM EDT Reads: 8,512
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 20th International Cloud Expo, which will take place on June 6–8, 2017, at the Javits Center in New York City, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
Mar. 26, 2017 01:15 PM EDT Reads: 2,133
SYS-CON Events announced today that Loom Systems will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Founded in 2015, Loom Systems delivers an advanced AI solution to predict and prevent problems in the digital business. Loom stands alone in the industry as an AI analysis platform requiring no prior math knowledge from operators, leveraging the existing staff to succeed in the digital era. With offices in S...
Mar. 26, 2017 12:45 PM EDT Reads: 1,328
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 20th Cloud Expo, which will take place on June 6-8, 2017 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 add...
Mar. 26, 2017 12:30 PM EDT Reads: 1,145