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The resilient file system (ReFS) was introduced with the initial release of Windows Server 2012. ReFS is a file system that is intended for managing large data volumes. ReFS uses a file-system design that auto-detects data corruption and performs repairs without having to take the volume offline. ReFS eliminates the need to run time-consuming check-disk operations on large volumes to resolve disk errors or corruption. ReFS is supported with PowerStore, but TRIM/UNMAP is not supported with ReFS volumes (a Microsoft limitation).
Although Microsoft recommends ReFS for large data volumes, compare feature sets for NTFS and ReFS before choosing ReFS. If TRIM/UNMAP support is needed for a volume, choose NTFS.
PowerStore features such as snapshots, thin clones, data reduction, replication, and others work equally well with NTFS or ReFS.