Simple changes to your hardware settings can drastically improve Hyper-V performance. Find out what you need to change to optimize your Hyper-V environment.
Understand industry-standard terminology around backup and how to apply it in a Hyper-V environment! Learn the language of virtualization backup.
Native adapter teaming is a hot topic in the world of Hyper-V. It’s certainly nice for Windows Server as well, but the ability to spread out traffic for multiple virtual machines is practically a necessity. Unfortunately, there is a still a lot of misunderstanding out there about the technology and how to get it working correctly.
One of the great things about the Hyper-V virtual switch is that it can be used to very effectively isolate your virtual machines from the physical network. This grants them a layer of protection that’s nearly unparalleled. Like any security measure, this can be a double-edged sword. Oftentimes, these isolated guests still need some measure of access to the outside world, or they at least need to have access to a system that can perform such access on their behalf. There are a few ways to facilitate this sort of connection. The biggest buzzword-friendly solution today is network virtualization, but that currently requires additional software (usually System Center VMM) and a not-unsubstantial degree of additional know-how. For most small, and even many medium-sized organizations, this is an unwelcome burden not only in terms of financial expense, but also in training/education and maintenance. A simpler solution that’s more suited to… Read More»
Like any creative work, a blog post is never really done; it’s just abandoned. Unlike many other mediums, blogs do allow us to easily refresh those older articles, but we so rarely ever do it. To close out this year, a few of us on the editorial team got together and selected a few highlights from the past year. Our 14 selections from 2014 (in no particular order): Hyper-V Guest Licensing This was our first licensing article directly related to guest licensing. We followed it up with a downloadable eBook that was expanded to include a number of examples, and Andy Syrewicze and Thomas Maurer gave a fantastic webinar on the topic. We’ve received quite a few questions and some great feedback. Keep an eye out for a follow-up post that takes on some of those questions and incorporates some of the suggestions. If you’ve got questions or suggestions of… Read More»
We’ve had a long run of articles in this series that mostly looked at general networking technologies. Now we’re going to look at a technology that gets us closer to Hyper-V. Load-balancing algorithms are a feature of the network team, which can be used with any Windows Server installation, but is especially useful for balancing the traffic of several operating systems sharing a single network team. Part 1 – Mapping the OSI Model Part 2 – VLANs Part 3 – IP Routing Part 4 – Link Aggregation and Teaming Part 5 – DNS Part 6 – Ports, Sockets, and Applications Part 7 – Bindings We’ve already had a couple of articles on the subject of teaming in the Server 2012+ products. The first, not part of this series, talked about MPIO, but outlined the general mechanics of teaming. The second was part of this series and took a deeper look at teaming and the aggregation options… Read More»
In part 3, I showed you a diagram of a couple of switches that were connected together using a single port. I mentioned then that I would likely use link aggregation to connect those switches in a production environment. Windows Server introduced the ability to team adapters natively starting with the 2012 version. Hyper-V can benefit from this ability. Part 1 – Mapping the OSI Model Part 2 – VLANs Part 3 – IP Routing Part 4 – Link Aggregation and Teaming Part 5 – DNS Part 6 – Ports, Sockets, and Applications Part 7 – Bindings Part 8 – Load-Balancing Algorithms To save you from needing to click back to part 2, here is the visualization again: Port 19 is empty on each of these switches. That’s not a good use of our resources. But, we can’t just go blindly plugging in a wire between them, either. Even if we configure ports 19 just like… Read More»
After storage, Hyper-V’s next most confusing subject is networking. There are a dizzying array of choices and possibilities. To make matters worse, many administrators don’t actually understand that much about the fundamentals because, up until now, they’ve never really had to. Part 1 – Mapping the OSI Model Part 2 – VLANs Part 3 – IP Routing Part 4 – Link Aggregation and Teaming Part 5 – DNS Part 6 – Ports, Sockets, and Applications Part 7 – Bindings Part 8 – Load-Balancing Algorithms Why It Matters In the Windows NT 4.0 days, the Microsoft Certified Systems Engineer exam track required passage of “Networking Essentials” and the electives included a TCP/IP exam. Neither of these exams had a corollary in the Windows 2000 track and, although I haven’t kept up much with the world of certification since the Windows 2003 series, I’m fairly certain that networking has largely disappeared from Microsoft certifications. That’s both a blessing… Read More»
Ever wonder why your virtual machines report that their network speed is 10 Gbps, even if you haven’t got a 10 Gbps adapter in the physical box? If so, you’re certainly not alone. Knowing why depends on an understanding of the Hyper-V virtual switch.
Anyone who has read much of my work on Hyper-V knows that I’m of the opinion that networking is one of the most complicated aspects of setting up Hyper-V, especially in a clustered environment. Part of it is that a lot of the concepts in Hyper-V networking lack a corollary in the physical realm so previous experience doesn’t carry forward very well. Another part of it is that Hyper-V is the first time that many administrators will see multiple network cards in the same physical unit that aren’t teamed together. One aspect that confuses a lot of people is the role of binding order for all those adapters in the parent partition. The contents of this post will apply to both Hyper-V R2 and 2012.