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View Windows ReFS versions.en.md

Version number is reported by fsutil fsinfo refsinfo, available on Windows 10 and Windows Server 2016.

ReFS 1.1

  • Version of formatted by Windows Server 2012.
  • Version 1.1 is used already in Windows Server 8 Beta. I have never seen version 1.0.
  • Can use and store alternate data streams, when mount on 8.1/2012 R2 or later.

ReFS 1.2

  • Version of formatted by Windows 8.1, Windows 10 v1507 to v1607, Windows Server 2012 R2, and when specified ReFSv1 on Windows Server 2016 or later.
  • Cannot use alternate data streams, when mount on 2012.