Windows Server build 17074

Windows Server build 17074 is a build of Windows Server, version 1803, and the fifth official Insider build of this version. It was released on 16 January 2018.

New features

 * Various improvements to Storage Spaces Direct. SCSI Enclosure Services is not longer required for Storage Spaces Direct to be compatible.
 * Storage Spaces Direct now supports Persistent Memory, as well as the ability to Direct-connect SATA drives to the AHCI controller.
 * Enabled the Cluster Shared Volumes (CSV) cache by default. This feature uses an in-memory write-through cache to speed up virtual machine performance.
 * Included enchancements to Azure enlightened Failover Clusters.
 * Added deduplication support for ReFS and Storage Spaces Direct.

Bugs

 * If you test the Windows core, it may fail because of a timeout while attempting to load the test libraries.
 * Running Insider versions of Nano Server containers on a host that uses Windows Server Core will fail and could crash the host. A workaround is to add " " when running or building the containers such as the syntax ".