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QNAP TS-251B-2G 2-bay NAS Review

To test real life file/folder performance we use a number of different file/folder combinations to test the read and write performance of the NAS device. Using the FastCopy utility to get a MB/s and time taken for each transfer, the data is written from and read back to a 240GB SSD.

We test using the following file/folder combinations:

  • 100GB data file.
  • 60GB ISO image.
  • 60GB Steam folder: 29,521 files.
  • 50GB Files folder: 28,523 files.
  • 12GB Movie folder: 24 files – mix of Blu-ray and 4K files.
  • 10GB Photo folder: 621 files – mix of .png, .raw and .jpeg images.
  • 10GB Audio folder: 1,483 files – mix of .mp3 and .flac files.
  • 5GB (1.5m pixel) image.
  • BluRay Movie.



Click to enlarge.

QNAP’s TS-251B had no problems dealing with any of our real life file transfer tests.

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