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QNAP TVS-863+ 8-Bay NAS Review

Sequential Performance

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In this section we measure sequential reads at two block sizes while we increase the queue depth. The 128KB block is the traditional size used by many manufacturers to measure sequential performance. The 1MB block size helps us to determine performance while transferring larger data such as pictures, videos and so on.

Users can tune the storage for heavy sequential or random workloads during the array setup process by changing the stripe size.  We use the default 64KB stripe that balances sequential and random performance. This is important to remember when setting up an array. QNAP uses pools so it's possible to direct your data to tuned areas that can use the same physical disks.

Reading back sequential data, the QNAP TVS-863+ is a little slower than the ReadyNAS 716X. That said, the TVS-863+ does deliver consistent performance after the initial ramp-up in queues.

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The QNAP unit delivers the highest peak sequential write performance but only overtakes the Netgear model after 4QD. When we add several streams of sequential load, the data takes on a random nature as the array takes in all of the steams and pushes the data to the drives. This will come into play in the next set of charts where we measure random performance at scaling queue depths.

  • basroil
    If it wasn't for the price (expensive, though justifiable) I would snap one up, seems to be a great option for photo/video storage and playback, and if you have a 10gigE network, even photo editing from it is going to feel snappy!
    Reply
  • CRamseyer
    I have a few disk drive reviews coming out soon and the iSCSI performance from this system is actually faster than a local disk.
    Reply
  • "iSCSI is an amazing technology that allows users to mount a volume to a host computer and have it control the volume as a local drive. You can even set the computer up to boot from the iSCSI share, just like a SAN."

    A massive over-simplification which is almost up there with "I want to buy an internet for my PC". It's not a technology, it's a protocol which runs over dead-basic Ethernet connectivity. The technology is "Ethernet", not iSCSI.

    You can't boot ALL computers from an iSCSI mounted volume unless you NIC supports it - and most integrated NICs don't.

    The "Con" of only having a single 10GbE interface isn't really a con for this type of device - if you need dual 10GbE then it's more likely to be for path diversity than performance, in which case you'll be wanting multiple switches and you're then into the realms of enterprise requirements, and if that's the case you wouldn't buy one of these in any case.
    Reply
  • basroil
    "It's not a technology, it's a protocol which runs over dead-basic Ethernet connectivity. The technology is "Ethernet", not iSCSI."

    iSCSI is technology, bridging two different protocols, and it doesn't need to be done over ethernet (though most commonly done over ethernet). Sure it's not "network technology" in the sense of low level protocols and physical devices, but it's still just as much a separate technology as TCP/IP, TLS, etc. (i.e. not all technology even has to have the same purpose or independent from others)

    "You can't boot ALL computers from an iSCSI mounted volume unless you NIC supports it - and most integrated NICs don't."
    Pretty sure all newer vPro systems support it, and definitely anything with PRO series NIC from Intel (and of course server grade NICs). Considering this device is 10gigE, I don't think they meant consumer grade computers booting over it!

    As for single 10gigE not being an issue, the only case in which I think people would see it as an issue is in the case of a legacy network still running gigE, in which case two teamed adapters running gigE would certainly still have a benefit. Other than legacy networks, you're right on the ball there.
    Reply
  • Marko Ravnjak
    "With HGST's new He8 drives with 8GB density, users can easily store up to 64GB of data."

    That's not really that much... ;)
    Reply
  • CRamseyer
    The comments really show just how far NAS system have come. You can do so much with them. I wouldn't go as far as to say one size fits all (not even close) but a small inexpensive system like this can easily serve 20 office systems over VDI.

    Dual 10gbE is nice for redundancy in a large network but I'm referring to performance increases against cost. A dual port 10GbE NIC has a very small price premium over a single port 10GbE NIC. QNAP sells both dual and single port 10GbE NICs but only offers the TVS-863+ with a single port.
    Reply
  • nekromobo
    Did you test the cache with 1 or 2 SSD's? Because with only 1 SSD you can only have read accelerated and need 2 SSD's to get read/write benefits.
    Reply
  • willgart
    "With HGST's new He8 drives with 8GB density, users can easily store up to 64GB of data. After RAID 6 overhead, that comes out to about 48GB of usable space with dual disk failure redundancy. "

    pretty small ;-)
    I prefer the other solutions where we talk about TB not GB... ;-)
    Reply
  • VfiftyV
    The 8GB DRAM model cost $1,399, while the 16GB model was $100 higher, at $1,400. Because math.
    Reply
  • SirGCal
    "The TVS-863+ with eight drive bays is a little too large for most home theater installations"

    WHAT? I currently have two 8-drive setups running RAID 6. A 12TB and a 24TB setup (2G and 4G drives respectively). And I'm almost full (89%). I have a large movie collection (all legal and no, you can't get any... ;-) and I also use about 8TB of that for (fake) work data storage. So I'm up to 28TB of movie and music storage that is just about full. I'd happily retire them for a single 48TB solution.

    Although building them myself is far cheaper, it's not as small. This is the first unit I'd actually consider buying that I've seen thus far. I'd for sure be excited to test it and see if it'll do everything else I need also (seems like it should).
    Reply