ReFS is designed to support significantly larger datasets than NTFS, without penalizing performance, which enables extremely large storage and file sizes. The following table shows the differences between the two filesystem limits:
| Filesystem feature | NTFS | ReFS |
| Maximum file name length | 255 * | 255 * |
| Maximum path name length | 32 K | 32 K |
| Maximum file size | 35 PB | 256 TB |
| Maximum volume size | 35 PB | 256 TB |
To better understand the preceding table, consult these points:
- * means Unicode characters
- TB = Terabytes = 1,000,000,000,000 B = 1012 bytes = 1,000 GB (Gigabytes)
- PB = Petabytes = 1,000,000,000,000,000 B = 1015 bytes = 1,000 TB (Terabytes)