Windows Server Insider Build 16257 released with support for P2P download of updates and more

Microsoft today released new Windows Server Insider Build 16257 to Insiders. This build includes support for Windows Subsystem for Linux (WSL) allowing developers and admins to run unmodified Linux (ELF64) binaries natively. Read more about it here. This build also includes the Delivery Optimization feature which has been part of Windows client since the Windows 10 Anniversary Update. Delivery Optimization enables faster and more reliable downloads making use of peer-to-peer bandwidth optimization between Windows Server machines. You can enable peer-to-peer downloads by following the below step.

Go to Settings -> Update & Security -> Advanced Options -> Delivery Optimization and turn ON the toggle to “Allow downloads from other PCs”.

Other highlights from the build:

Developers and Containers:

  • New base container images (available on Windows Insider Docker Hub repo)
    • Optimized Nano Server base image (over 70% smaller)
      • The .NET team is providing a preview image based on Nano Server with .NET Core 2.0
      • The PowerShell team is providing a preview image based on PowerShell 6.0
    • Optimized Server Core base image (over 20% smaller)
  • Support for SMB volume mounting
  • Infrastructure for Orchestrators
    • Networking enhancements for ongoing Kubernetes work
    • Named pipe mapping support
  • Bug fixes, performance enhancements

Cloud Guest:

  • IIS
    • TLS info: administrators can make specific recommendations to default to HTTPS
  • Disaster Recovery
    • Storage Replica Test Failover
  • Guest + Host better together
    • vPMEM in Guest: Tenants can use and manage PMEM/SCM
    • Tenant-Aware VM Start Ordering: App Ready / OS Heartbeat for better load balancing
    • Guest RDMA
  • Improvement in time accuracy
  • Azure enlightened clusters – optimized to run on Azure IaaS

Cloud Host:

  • Software Defined Data Center (SDDC) host
    • Security
      • Shielded Linux VM
      • SDN: Encrypted virtual networks
      • Secure clusters
      • SMB 1 disabled by default
    • Resiliency and Availability
      • SDN: Reduced downtime for tenant connections through gateways
      • Spaces Direct: Scoped Spaces to mitigate impact of multi-node loss
      • Spaces Direct: Marginal drive handling for predictive detection of drive failures
    • Efficiency
      • Data Deduplication available for ReFS
      • New Data Deduplication DataPort API for optimized ingress/egress
      • Space efficiency with ReFS Compaction
      • Performant Spaces Direct Multi Resilient Volumes (MRV)
    • Hyper-converged Scale
      • Cluster Sets: Significantly increases hyper-converged SDDC cloud scale by grouping multiple clusters into a larger fabric
    • Hardware support
      • Support for Storage Class Memory (SCM) in Spaces Direct

You can download this latest Windows Server Insider Build here.

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