VM Role is it Infrastructure As A Service?

28 בפברואר 2011

Windows Azure was released as a platform a service (PAAS) to which you deploy applications. Its largest competitor Amazon EC2 (AWS) was released as an Infrastructure As A Service (IAAS) from which you get machines in the cloud. AWS is a great success. The reason is because it is simple. Customers feel safe because they work in a familiar environment – They work on a machine. The only difference is that this machine is not sitting in their local data canter. There is no doubt that PAAS allows better use of the cloud in...
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VM Role Requires Server 2008 R2 SP1

25 בפברואר 2011

I wanted to work with VM role. The first thing I did of course was to install Hyper-V to enable the creation of new virtual machines. I created a new virtual machine but when I tried to start it (and install an OS) I got an error "Cannot Identify Virtual Machine …" I investigated and found out that Hyper-V does not work without installing Windows Server 2008 R2 SP1 first. You can find it here. Now it works and I can play with VM Role. Hope this might help Manu
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Watch My Talk About Windows Azure

Two weeks ago I gave a talk introducing Windows Azure and cloud computing in Sela College. There were 30 participant who enjoyed a free Azure presentation. The talk was given in Hebrew. In this talk I explained basic concepts about cloud computing and described windows Azure. I built a simple application and deployed it to the cloud using the new SilverLight portal. You can watch the show here: Part1, Part2 Enjoy Manu
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State Management in Cloud Applications

Cloud applications are distributed applications by design. There are many instances of roles located on different VMs and everything is load balanced. In Windows Azure there is no sticky load balancing so you can never know which role instance will serve your request. Such an environment introduces the challenge of state management. This is not a new challenge we know it from Asp.Net applications. Now in windows azure we find it everywhere – In web roles and worker roles. When you create a object and save data in its member you want to keep working with the same...
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How to add a custom icon to WF 4 custom activities (toolbox and designer)

14 בפברואר 2011

Adding a custom toolbox icon to your custom activity is a simple task yet there are few rules to follow. To add the custom Icon we use ToolboxBitmap Attribute. like so: public sealed class MyActivity : NativeActivity The icon "myIcon.bmp" must be a bitmap file The icon must be 16X16 pixels The icon must be compiled as embedded resource in the current assembly To display...
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Windows Azure Reference List

12 בפברואר 2011

I came across a very good list of references about windows azure Portal (Product Home) Windows Azure Platform <http://www.microsoft.com/windowsazure/> Portal (Developers) Windows Azure Developer Center <http://msdn.microsoft.com/en-us/windowsazure/default.aspx> Portal (How-to Index) Windows Azure Content Indexes <http://msdn.microsoft.com/en-us/library/gg465393.aspx> Portal (Security & Performance) Microsoft Global Foundation Services <http://www.globalfoundationservices.com/> Portal (Benchmarking & Guideline) Azurescope - Benchmarking and Guidance <http://azurescope.cloudapp.net/> Portal (Interoperability) Azure Interoperability <http://www.interoperabilitybridges.com/projects/tag/Azure.aspx> ROI Azure ROI Calculator <http://azureroi.cloudapp.net/> SDK Active Directory Federation Services 2.0 RTW <http://www.microsoft.com/downloads/en/details.aspx?FamilyID=118C3588-9070-426A-B655-6CEC0A92C10B> SDK Windows Identity...
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AppFabric Labs Was Upgraded

10 בפברואר 2011

Azure AppFabric labs was upgraded. No more old portal style… Now you can enjoy the new Silverlight portal look and feel. On the way all the namespaces from the last version were deleted. I hope you are not damaged… More improvements: Ability to choose from a set of available cache sizes and provision a cache of the chosen size Support for upgrading or downgrading between caches from the available sizes dynamically based on your requirements Added client side tracing and client request tracking...
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What is not supported in AppFabric Azure Cache

6 בפברואר 2011

Named Cache: In Windows Server AppFabric Caching Service it is possible to create named caches and provide different configuration characteristics to each cache. For example, one cache with rarely changing data could have a very long time-to-live configured for cached data while another cache containing more temporary data could have a much shorter time-to-live. Furthermore, it is possible to create regions on a single node in the cache cluster and associate searchable tags with cache entries. Neither of these features are implemented in Azure AppFabric Caching which supports only the default cache! Cache Notifications:...
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Azure AppFabric Cache can't work together with Windows Appfabric

Azure appfabric distributed cache is very important for managing state in distributed applications. (I will talk about it in details in my next post) but it has a little unpleasant surprise. It does not work side by side with Windows Server AppFabric ! If you previously installed Windows Server AppFabric, you must uninstall it before installing the AppFabric CTP SDK. These on-premise and cloud versions of AppFabric are not compatible at this time. When both are installed Windows Azure Appfabric SDK will use Windows Server AppFabric Microsoft.ApplicationServer.Caching.xxx installed in the GAC instead of the original SDK...
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