Depending on the cluster size, NTFS can support volumes as large as 256 terabytes. Consult the following table for NTFS cluster sizes and the respective volume sizes they support:
| Cluster size | Largest volume size supported | Largest file size supported |
| 4 KB | 16 TB | 16 TB |
| 8 KB | 32 TB | 32 TB |
| 16 KB | 64 TB | 64 TB |
| 32 KB | 128 TB | 128 TB |
| 64 KB | 256 TB | 265 TB |