![]() ![]() Windows Server 2012 offers workload isolation at the network layer to provide a high level of security for cloud or service environments that allow multiple groups to share basic network resources (known as multitenancy). Notable improvements in these areas include: Hyper-V 3.0 features important enhancements over Windows Server 2008 R2 Hyper-V including improved workload isolation in cloud or hybrid environments, more options for adding and moving servers, increased capacity and performance, and higher availability. ![]() However, this feature is an excellent, cost-effective way to eliminate the downtime associated with scheduled server maintenance, which is a major cause of workload unavailability for smaller companies. This makes shared nothing live migration inappropriate for disaster recovery scenarios. Shared nothing live migration can take time to execute, because the source disk must be copied and then synchronized. Live migration previously required Storage Area Networks (SANs), which are too costly to acquire and too complex to manage for most small businesses. One of the headline enhancements in Hyper-V 3.0 that can improve productivity for smaller organizations is "shared nothing live migration." This feature makes it possible to move a virtual machine (VM) non-disruptively from a physical host that has low-cost attached storage to a different physical host that also has attached storage. Shared Nothing Live Migration Eliminates Downtime for Scheduled Maintenance Progent's Microsoft-certified consultants can help you understand the value of Hyper-V for your information network, set up test environments to streamline your migration to Hyper-V and verify the ability of Hyper-V to handle your workloads, design a Hyper-V solution that optimizes performance while minimizing costs, install and configure Hyper-V virtual machines that are secure and easy to maintain, show you how to utilize Hyper-V to reduce both planned and unplanned downtime, train your IT staff to manage your virtual environment, and provide ongoing remote and onsite support when you need it. Windows Server 2012 R2 incorporates additional improvements to Hyper-V, dramatically enhancing and system resilience and Live Migration performance. Areas of improvement over previous releases of Hyper-V include more secure multitenancy, more flexible infrastructure, increased capacity and performance, easier manageability, improved cloud readiness, and higher availability. These enhancements facilitate the deployment and management of virtual servers and storage, delivering enterprise-class capabilities that are well within the budgets of small and mid-size companies. Hyper-V 3.0, the virtualization platform included with Windows Server 2012, offers a wealth of enhancements over the Windows Server 2008 R2 version of Hyper-V. The subnet in question has "NAT gateway" set to "none" (and, indeed, cannot be set to anything else).Windows Server 2012 R2 Hyper-V Virtualization Support The inbound/outbound rules of the NSG are ![]() I've double checked that I have no NSG on the VM's subnet. Removing the NSG of the NI on the VM in question doesn't help. This is the output I see from Network Watcher's "Connection Troubleshoot": Why can't I access the internet from these VMs? Thanks for looking. I can resolve domain names (using "host" on linux, for example) so I don't believe this to be a DNS issue. I've also used the Network Watcher's "Connectivity Troubleshoot" which shows that the connection form any of the VMs to an internet IP address is "unreachable" but shows no issues as a cause. To test this I've used Network Watcher's "IP Flow Verify" test which shows that the traffic isn't being blocked by the NSG rules. These NSGs allow outbound internet traffic. I've applied Network Security Groups to the NI of each VM (there is no NSG on the VNet itself). I can RDP into the windows boxes/ssh into the linux box due to inbound NAT rules on a load balancer. None of the VMs have a public IP addresses. I've set up some windows VMs and and a single linux VM on azure and none of them can access the internet. ![]()
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