We took a look at the performance of the QNAP TS-659 Pro II in the configuration that it is most likely to be used in. It turns out to be a better performer than the LaCie 5big storage server unit that we reviewed last year in the same class.

There are a few quirks in the firmware, particularly with respect to the RAID rebuild. However, none of them are showstoppers. There are a few features such as one touch copy for the USB 3.0 port which could have made more sense for an eSATA port. USB 3.0 is a nice add-on feature, but we are not sure it is worth any additional price premium in the SMB / SOHO NAS market.

QNAP's marketing claims also hold up very well (except for the power consumption numbers which are kept low in the brochures by using 500 GB hard disks, and the rating of the internal PSU, which is 250W instead of the 350W claimed in the marketing brochure). Just like Synology, QNAP also has an exensive wiki system and very helpful forums.

All in all, the Atom D525 based QNAP TS-659 Pro II is the most powerful NAS we have reviewed so far, in terms of raw NASPT benchmark results as well as add-on features (both in terms of hardware as well as firmware). The TS-659 Pro+ has the same hardware specs as the TS-659 Pro II reviewed here (except for the two USB 3.0 ports). If the end-user scenario doesn't involve USB 3.0 devices, the former would turn out to be as good a choice as the TS-659 Pro II.

RAID Rebuild and Miscellaneous Concerns
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  • bobbozzo - Tuesday, September 20, 2011 - link

    So can you add more drives to the RAID using eSATA? How many?

    Thanks!
  • ganeshts - Tuesday, September 20, 2011 - link

    It supports port multipliers in the sense that you can configure share folders on it. However, I don't think RAID expansion is supported: http://forum.qnap.com/viewtopic.php?p=158110 : Note that I am unable to test this out right now because the review unit is being put under stress for one of the bugs reported elsewhere in this comments section.
  • beginner99 - Tuesday, September 20, 2011 - link

    IMHO only makes sense for business use. Only advantage to a DIY build is the small case with hot-swap. Have not seen such a case anywhere for a DIY build.
    But besides the case size you can get better hardware for half the price with DIY.

    I'm quite astonished by the 72 watt. Do hdd's need that much power?
  • jmelgaard - Tuesday, September 20, 2011 - link

    I Disagree that the only advantage is the small case, a DIY solution might not even be possible for some consumers as they simply won't know "how to" build your own, these boxes has a high level of convenience to them and putting together components to hit the same low power consumption could be a picky task.

    But ofc. it's your opinion so I can't but say mine is different.

    The drives is rated at 7.4 Watts typical under read/write according to specs the Processor is according to Intel rated around 13 Watts.. that sums to 57,4 Watts... Add the rest of the components and I think it sounds fairly realistic...
  • DanNeely - Tuesday, September 20, 2011 - link

    Most of the remainder is probably PSU inefficiency. Assuming 80% efficiency you get 71W of power in for the components you listed.
  • asakharov - Tuesday, September 20, 2011 - link

    Not long ago I had a chance to test I/O performance of QNAP TS-459 Pro II (the same generation as at article) and older TS-439 Pro II. Looks like not my, not TS-659 Pro II could really use Ethernet load balancing - no I/O performance change according to NASPT. All available Ethernet teaming type was tested. All disks are in RAID0
    The best I/O performance I received with one Ethernet connected to NAS.
    The simplest is the fastest?
  • meesterlars - Tuesday, September 20, 2011 - link

    I would urge you, Anand, to consider making readers of your site aware of an undisclosed but critical bug affecting QNAPs with newer firmware versions; it seems a certain combination of free space and number of files stored on the NAS can cause anything from appalling performance to data corruption and eventually data loss.

    The following link documents the failure of a 10TB storage node.

    http://forum.qnap.com/viewtopic.php?f=189&t=46...

    According to their forums, QNAP are investigating...

    It seems we too might be showing symptoms of this bug at one of our customer's installations where we had two freezes last week alone, requiring customer interaction (i.e., "pull power, please"). Not ideal.
  • rancid-lemon - Tuesday, September 20, 2011 - link

    Ouch, I've just read through this thread and seems to be a show stopper.

    I was looking at buying a QNAP device but this may have to go on hold.

    There does seem to be some qnap support on the subject but that haven't revealed any details of a fix, time frame to solution or anything. Plus they seem to be no closer to a solution (or indeed know generally what is going on with their own system!)

    Thanks for the heads up!
  • ganeshts - Tuesday, September 20, 2011 - link

    Thanks for posting this. I am trying to recreate the issue in the unit we have, and if I am successful in doing it, I will post an addendum to the review.
  • rancid-lemon - Tuesday, September 20, 2011 - link

    Just so you are aware, having read the entire thread it seems to affect larger hard drives, 2TB+. I notice that your review system was using 1TB drives.
    The issue may still occur with 1TB drives though since according to that thread there seems to be an amount of uncertainty involved as to the cause.

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