Refs je stále jen "doplněk" k NTFS, nená to jeho náhrada. Má (předpokládám zatím) spoustu omezení, viz třeba https://www.virtualizationhowto.com/2017/05/when-to-use-windows-server-2016-refs/
nebo
"On the other hand, you'll be losing several features moving to the Resilient File System, including object IDs, named streams, extended attributes, short names, file level encryption (EFS), compression, user data transactions, sparse, hard-links, and quotas."