Qnap TS-559 Pro: Do More Drives In Your NAS Mean More Speed?

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We know that adding drives to a RAID array can help improve performance. But does adding storage to a NAS device really help push throughput higher? We put four-bay and five-bay units from Qnap up against each other and benchmark their transfer rates.

Benchmark Results: Backup And Office

The simulated system backup into a single container file (66% sequential writes) is not significantly faster on the TS-559 Pro. Once again, the differences are larger in the RAID 5 degraded mode and RAID 6 mode.

Restoring the backup produces very similar results.

The difference between the Office Productivity benchmark compared to the Photo Album benchmark is that the files not only have to be read, but written as well. Also, the file sizes vary between 12 bytes and 197 MB. This means that the differences in data transfer rates are very small in the RAID 6 mode. The difference is measurable in the other RAID modes, but so small that it is practically irrelevant.

More benchmark results can be found in the gallery.

Marcel Binder
Marcel Binder
31 Comments Comment from the forums
  • thomaseron
    "We put four-bay and five-bad units..."
    Haha! ;-)


    EDIT: They have corrected it now... :-)
    Reply
  • Zoidman
    I set a TS-459 up at my work, and that machine is a piece of beauty! It runs a copy of linux on it which is root accessible by SSH thus unlocking all the potentials you could ever want! It adds a huge amount of value to the devices in my opinion and would recommend it to a business looking for a basic backup system.
    Reply
  • Reynod
    I would need to sell a kidney.

    /ponders
    Reply
  • ProDigit10
    Who would want to pay that for a nas server?
    Just purchase a micro atx board + case + Atom N550/D525 and 2GB of ram, and install 2 or 4 harddrives in RAID.
    It'll cost you less than $400!

    5 drives and up is indeed harder to get, but definitely NOT worth trice the price!

    Besides, the Atom is a very small CPU which would bottleneck when 2 or 3 drives are copy/moving data. I don't think it's even wise from performance standpoint of view to buy any Atom NAS server with more than 3 or 4 drives!

    comment made before reading article.
    Reply
  • Agges
    Supporting ProDigit10's sentiment..

    How about adding a 'building your own NAS/server' guide, including testing the sweet-spot for price/performance for various set-ups..?
    Reply
  • mjw
    It looks like the network may be a bottleneck in a number of your tests. It would be interesting to see if the performance increases when the dual gigabit NICs are run in teaming mode.
    Reply
  • KentC
    I bought an Acer Home Server with 4 hot swap drive bays and one drive bay with a 1tb drive with the server OS for $350. It looks like these units provide less and cost almost three times as much. Why are they so expensive? What does 3x the cost buy me?
    Reply
  • noblerabbit
    I just shove 5 harddrives in my PC for my storage needs.
    Reply
  • joex444
    I'm with mjw here. If the highest number you ever achieved is 116MB/s you're limited by GbE rather than anything else. When a 2 drive RAID1 performs the same as a 5 drive RAID5 you have some other problem.

    I run an external 8 bay unit, all drives filled with 2x250GB drives for OS and 6x750GB drives for RAID5. The biggest problem I have in terms of getting an idea of the true transfer rates capable is the fact that the RAID5 can write faster than the other array reads. And copying from an array to itself always has issues. So in real-world apps, my write speeds are limited by the read speed of other devices. The only logical way to untangle the two is to run a separate 6 drive RAID5 array, but I'm out of PCIe 8x slots to do so (as well as money).
    Reply
  • mikem_90
    Part of what you pay for is the software development for all the features they give out of the box. Sure you could build your own, but it might not be as compact while offering hot swap and have an well designed interface with the well integrated features.

    These systems offer some very nice features I don't mind paying for.

    Keep in mind that this is the corporate version, it has a much beefier CPU than the cheaper ones that cost a few hundred dollars less. They don't offer the same performance, but not everyone needs to use volume based encryption and send the files back and forth over SSL encrypted links.
    Reply