|
All things migrations, software and technology
Virtualization
-
A quick post to tell everyone that the day finally came: Windows Server 2008 was released today. You can find more information about it on the Windows Server 2008 page, and watch the keynote here.
The biggest deal, from my perspective, is Hyper-V. This will have a significant impact on the IT market, by exposing thousands of IT profesionals to a hipervisor-based virtualization solution. Another very interesting technology is RemoteApp, which allows you to use, through Terminal Services, just one application instead of the complete desktop. It solves a deployment issue that required expensive software solutions in the past - and something we run into every once in a while when determining the best deployment strategy for migrated Informix 4GL applications.
|
-
For those of you who missed it, Windows Server 2008 RC1 was released yesterday, with the Beta of Hyper-V. Finally!
You can download it here, and there is some more information on the Virtual PC Guy's WebLog.
|
-
Ever since we started working on the Virtual Server seminars, we’ve been hearing about I/O Virtualization, and how it will improve the virtualization landscape as the VT instructions did. Well, today Intel unveiled its vPro platform, with this new technology.
The technology is called Virtualization Technology for Directed I/O or VT-d. VT-d controls access from Virtual Machines to memory at the physical page level, preventing one VM from accessing other VM’s memory. This has the side effect of virtualizing interrupts and DMA tranfers, which in turn should increase the performance of virtual machines since the VMM would no longer need to trap and emulate the behavior from virtual machines.
For more information, check out or this article at Intel’s website, which contains a detailed explanation of the platform. For a more digested approach, check out this coverage at Arstechnica.
|
-
-
This has been a very exiting week for virtualization, at least on the Microsoft side of things. Microsoft made two significant anouncements between Monday and today:
- First of, Virtual Server R2 2005 SP1 was finally released! You can download it from Virtual Server’s website. Make sure you check out the details about the release as well. BTW, the website also got a new “modern” look. Nice job!
- Also, today Microsoft released the whitepaper “Licensing Microsoft Server Products with Microsoft Virtual Server and Other Virtual Machine Technologies”. This whitepaper details the licensing requirements to run Microsoft’s products in Virtual Server, VMWare, and other virtualization solutions. It also covers some restrictions for scenarios like moving virtual machines from one server to another, virtual machine libraries, products licensed by CPU/Virtual CPU, and others.
For the licensing, remember that you can also use Windows Server Virtualization Calculators to figure out the licensing cost of running Microsoft’s server products on a virtual environment.
|
-
Right now my colleague Stephen is delivering the last hands-on lab of the Virtualization for Developers Lab Series. This means that one of the most interesting trainings I have delivered is now over. It has been a good run, and, even though we sometimes didn’t get the attendance we wanted, a great experience. Some of the highlights of the series include:
- Meeting all sorts of interesting people with interesting (and crazy) projects at every location
- The experience of getting the setup process for the labs almost fully automated - learned a lot about Windows in the process
- See Windows Server Virtualization live for the first time on a presentation by Arno Mihm at a Redmond event
- Going to a tapas bar (“de tapeo”) in Huesca with some of the attendees at the Zaragoza event
For the next few months we’re going to be working on some new trainings and in some other exciting projects. I’ll keep you all posted. In the meantime, remember about the HP Integrity labs – that’s where I’ll probably head next!
|
-
Today I finally got a chance to play with Beta 2 of the System Center Virtual Machine Manager. Here are my preliminary impressions:
- First of all, the product has improved significantly. It has tons of new features, and uses tons of new pre-requisites. Fortunately, you can download a pre-configured VHD with SCVMM, ready to go, from Microsoft Connect.
- This version of SCVMM uses the new Windows Remote Management (WinRM) package to manage remote servers. This is a step in the right direction, IMHO, since it is Microsoft’s implementation of the WS-Management Protocol. The downside is that I had to install the WinRM package on the servers, but well, its a nice trade-off for getting a SOAP-based, standard management product.
- One thing I really like about it is the Powershell integration. It is finally included in this version of SCVMM, and the implementation rocks – at the end of most wizard, you get a button that says “View Powershell Script”:
Pressing that button shows you the Powershell script equivalent to the options you selected:
So far I’ve only been able to add hosts and manage the virtual machines on those hosts. I am looking forward to working with the new advanced features, including (and especially) the physical to virtual migration. Overall I think the new features are great, and you should give it a try.
|
-
Today Microsoft released the Beta 2 of Carmine System Center Virtual Machine Manager. This Beta 2 release adds long-awaited functionality, like P2V and V2V migration, among others. From the release notes:
- Completely new look-and-feel (same as System Center Operations Manager 2007, Service Desk and System Center Essentials)
- Physical-to-Virtual (P2V) Conversions
- Virtual-to-Virtual (V2V) Conversions
- 64-bit VMM server support
- EveryVMM component is now remotely installable
- Full Windows PowerShell support
- Better overall performance and scalability
- Every feature from Beta 1 with more functionality and enhancements
I am currently downloading it, and will post back once I get a chance to play with it a little bit. One of the features that I’m dying to try out is the Powershell support – as powerful as vbscript is, I’m not particularly fond of it, and replacing its use on yet another MS product is another step in the right direction.
You can download Beta 2 from https://connect.microsoft.com/vmm. Remember you have to register first!
|
-
-
In a couple of weeks we’ll have the last of the scheduled Virtualization for Developers Labs. The two labs will take place on the same week – one in Zaragoza, Spain, on May 8–10, and the other one in Paris, France on May 9–11.
If you are interested in Virtual Server, the upcoming Windows Server Virtualization, or Virtualization in general, I suggest you check them out. So far we’ve had some great reviews of the labs, and it is a great opportunity to get hands-on training with Virtual Server and its APIs.
|
-
You can now download the Release Candidate for Virtual Server 2005 R2 SP1 from https://connect.microsoft.com. Remember that you need to be registered in the beta program to be able to download the files.
This release contains bug fixes from Beta 2 – other than that, it doesn’t have any additional functionality.
|
-
I just saw over at the Virtual PC Guy’s Blog that a new tool is available that allows you resize existing VHDs. You can check it out at the vmToolkit website.
According to the announcement, with this tool, you can resize VHDs (both increase and decrease their size), and can also be used to convert between Fixed and Dynamic disks.
|
-
Today I saw an article over at ComputerWorld that talks about Virtualization's downsides. It brings out some interesting points, but I think you can easily overcome them. Here are my comments on some of the points they criticize.
(Since I am more familiar with Virtual Server than with competing products, I will concentrate on Virtual Server’s features)
- Increased uptime requirements: This is something that has been on my mind since I started working with Virtual Server. Recently I had the change to setup a Virtual Server host cluster, and I think that is the way to go to minimize this concern. With Windows’ clustering capabilities, you can take out a node in the cluster, and another node will continue running the virtual machines. The virtual machines will only be unavailable for a few seconds while the resource group changes from one node to the other.
- Bandwith problems: One of the recommended scenarios for running Virtual Server is to remove everything from a NIC on the host server except for the virtualization driver. You can extend this recommendation, and use several NICs on the host, each NIC associated with just one VM. Still, if you have something like a very high-traffic website, you’ll probably be better of running it on a physical server instead.
- Cost accounting - license compliance: Microsoft has released new licenses for their server products that make them virtualization-friendly. You can review it here, and see how many licenses you need for your planned configuration. Licenses for other application may be messy, though.
- Vendor support: This is something that the industry will have to sort out. Something similar happened with the move to multi-core systems. Some vendors treated dual-core CPUs as two processors (thus requiring two licenses), while other adapted a “per-socket” approach. Other even adapted even stranger policies (dual-core = 1.75 licenses ???). Again, the market will have to adapt to the new virtualization paradigm.
- Management Complexity: Managing virtual machines as opposed to physical machines is definitely more complex – you basically have to perform all the management tasks that you normally do for physical boxes, PLUS the overhead of managing virtual machines. Management tools are still in their infancy, but with the eventual release of
CarmineSystem Center Virtual Machine Manager plus a fully WMI-based API, the management effort should be reduced significantly.
Then again, there are some workloads that don’t work well when virtualized. Database servers are a classical example of this – IMHO it is a better idea to have one large database server and hosts several database in that SQL Server instance (for example), than to have several virtual machines each one with a separate SQL Server instance hosting different databases.
|
-
In a couple of weeks we will be teaching two Virtualization for Developer Labs in Europe. The first one will be in Munich, on March 13–15, and the second one will be the following week in Reading, on March 20–23.
In this labs we show you in great detail how to leverage Virtual Server’s COM API and WMI methods in you own management applications. You will also learn how to create scripts to automate the management of Virtual Server installations, and you’ll also get to use the betas for the System Center Virtual Machine Manager.
For more information, don’t forget to check out the Virtualizacion Events website.
|
-
More Posts Next page »
|
|
|