Windows Server Insider Preview Build 17074

Sneak Peak of Windows Server 1803 (RS4) – Windows Server Insider Preview Build 17074

Yesterday, Microsoft announced a new Windows Server Insider Preview Build (17074) which will be released as the next Semi-Annual Channel release for Windows Server. This release will likely be called Windows Server 1803 (Codename: Restone 4), which is aligned to the Windows Client releases.

Microsoft talked about improvements in the next Windows Server releases and the investments in Containers and Storage Spaces Direct at Microsoft Ignite 2017, and we already got some early Windows Server Insider Preview builds to see what is coming next. The official list is not to big right now, but we can expect Microsoft to add and announce more features in the comment weeks and months.

What is new in Windows Server 1803 (RS4)

  • Storage Spaces Direct (S2D)
    • Microsoft adds Data Deduplication support Storage Spaces Direct and ReFS
    • Microsoft removed the requirement for SCSI Enclosure Service (SES) on the hardware, which enables more hardware to work with S2D
    • Storage Spaces Direct adds support for Persistent Memory (Storage Class Memory), which brings very fast and very low latency storage to S2D. The prices for this devices is still pretty high, but we can expect this to change in the future and we can also see them as a great use as caching devices.
    • Storage Spaces Direct now also supports Direct-connect SATA devices to AHCI controller, which also make more hardware work with S2D
    • CSV Cache is now enabled by default, which delivers an in-memory write-through cache that can dramatically boost VM performance, depending on your workload.
  • Failover Clustering
    • Azure enlightened Failover Cluster – This is a very exciting feature if you run Windows Server Failover Clusters in Microsoft Azure. This feature will let the Windows Server cluster know if there is Azure host maintenance going on and will exclude the specific cluster node from placing workloads on it.

      By making high availability software running inside of an Azure IaaS VM be aware of maintenance events of the host, it can help deliver the highest levels of availability for your applications.

  • Container
    • Microsoft promised to add more Container feature and provide updated Windows Server Container Images. One feature which made it already into this and early Preview builds is a long waited feature which caused some confusion before.¬†Developers can now use localhost or loopback (127.0.0.1) to access services running in containers on the host.
  • Other Improvements

As mentioned before we can expect Microsoft to add and announce new feature for the next Windows Server release in the next couple of weeks and months.

How to download the Windows Server Insider Preview

You can download the Windows Server Insider Previews from the Windows Server Insider Preview download page. If you are not yet an Insider, check out how to get one on the Windows Insider for Business portal.

Careful, this is pre-release software and it is not supported in production.

Test and Provide Feedback to Windows Server

For Microsoft it is very important that they get feedback about the latest releases. To send feedback use the Feedback Hub application in Windows 10, and choose the Server category with the right subcategory for your feedback.