I run ReFS in two configurations:
- In a storage spaces mirror (2x4TB), for most valuable data
- Standalone on a single disk, for offsite backups (NB: not my only backup)
In both of these configurations the data integrity features have been enabled in ReFS / Storage Spaces.
I run the Windows defragmentation tool monthly. However I ran defraggler straight after the windows defrag tool recently and it reported significant fragmentation, with some files having thousands of fragments. Defraggler can defragment the disk, but it's very slow - 2TB of data can take 16 - 24 hours. Is fragmentation a problem in ReFS?
- The "problem" is: ReFS disks have significant fragmentation
- The question: should I defragment these disks using defraggler, to remove all fragmentation, or let the Windows defrag tool do whatever it thinks is required?