Your Guide to the Latest Windows Server Product Information
We are at an exciting stage of the release. Beta has been out for some time now and we’ve gotten lots of great feedback. As we progress towards releasing the next version of Windows, many of the details are getting decided and communicated. This has been a big week for naming. On Monday, Brandon LeBlanc announced the official product names for editions of Windows on the Windows Team blog. During that day’s MMS keynote, Brad Anderson announced the official name for Server: Windows Server 2012. In today’s blog the SMB team announces their official name: SMB 3.0. I don’t think this will come as much of a surprise to anyone. The team has delivered an amazing amount of innovation in this release. If you haven’t already downloaded the beta, I think you’ll want to after reading some of the details in this blog.
Last September at the //Build Conference, we announced SMB 2.2, an update to our Server Message Block protocol used by default for file sharing in Windows. Since then we have actively engaged with the community through various channels and have spoken in detail about all the great work that has gone into the release and why we think this is truly a game changer. Windows Server 2012 provides a vast set of new SMB features with an updated SMB protocol that greatly enhance the reliability, availability, manageability, and performance of file servers. Looking back at the amount of changes that have gone into this release – the lines of code written, array of features introduced, new scenarios we have enabled, work we have done with our partners, a minor revision doesn’t do justice the work that has gone in. So moving on, SMB 2.2 is SMB 3.0!Regular followers of this blog have seen detailed posts on various SMB improvements over the last few months. To summarize, the following are some of the key new functionalities available with Windows Server 2012 SMB 3.0:
With so many new features, SMB offers a richer set of capabilities that, when combined, provide organizations with a robust high performance storage alternative to traditional Fibre Channel storage solutions at a much more affordable cost point from both an acquisition and operational perspective. For additional reading materials related to SMB, there is a ton of content on TechNet:
- Windows Server “8” Beta SMB Overview - High-Performance, Continuously Available File Share Storage for Server Applications Technical Preview- Deploying Fast and Efficient File Servers for Server Applications- Building Your Cloud Infrastructure: Converged Data Center with File Server Storage
Jose Barreto and Claus Joergensen, Program Managers in the SMB team, have written a great blog on taking server application storage to Windows file shares. It’s a great read and is highly recommended.We are really excited about Windows Server 2012 and can’t wait for you to start using the product. We definitely hope you have as much fun using the product as we had building it. In the meantime, as you know, the Beta has been out for a while now and we would love for you to use it and let us know what you think.
SMB 3.0 Team.
Are their plans to publish a patch or SP to enable this on Windows 7? Lots of people are going to miss the benefit if that isn't the case as the adoption of Windows 8 is going to take a few years. I have SA so I plan to adopt Server 2012 fairly soon; despite the terrible UI, mainly for deduplication.
From Siddhartha Roy, Jose Barreto and the File and Storage team:
Thank you for the question. We are not planning to support SMB 3.0 client in Windows 7 (or earlier versions). We are not planning to support SMB 3.0 server on Windows Server 2008 R2 (or earlier versions). The changes to support SMB 3.0 are extensive, both on the SMB Server and SMB Client side.
For any previous versions of Windows, we will negotiate the highest level of the SMB protocol they implement. For Windows 7 client, that will be SMB 2.1. You can get the details in this blog post: blogs.technet.com/.../what-version-of-smb2-am-i-using-on-my-windows-file-server.aspx
Senior Community Lead, Windows Server
Understood, but that is unfortunate.
Will Microsoft be making the SMB 3.0 API available to Linux developers to ensure good interoperability for CIFS mounts?
Yes, we have published the full preview protocol specification for SMB 3.0 and it’s available at
The Samba community is actively working on SMB 3.0 and a detailed discussion at SambaXP is going on this week. Microsoft is participating, as we do regularly. The team’s status, and the conference agenda are here:
Samba is one of many partners in the SMB Ecosystem (as mentioned in the blog). We are very excited to see this significant progress by the Samba team and are working closely with them to ensure their success
When will you post the details of how SMB encryption works? Is the key derived from diffie-hellman or from the authentication protocol? Can we choose the cipher and key size? What about compatibility with EFS, can we do raw EFS transfer without having to make our EFS private keys available to the target server? Thanks!