QNAP TVS-871T - Faster than SSD!

8 comments

• Comment Link Tuesday, 01 September 2015 16:21 posted by Remco

  I think your benchmarktool is benching from the 64MB cache from the HDD's, not the true HDD disk speeds for large files.

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• Comment Link Tuesday, 01 September 2015 21:34 posted by DL

  Blackmagic's disk speed test offers a minimum file size of 1GB and goes all the way up to 5GB, so those files are definitely leaving the cache and being written to disk.
  
  The whole point of this tool is to check if your storage is fast enough to edit HD and Ultra HD footage from Blackmagic's Cinema cameras which themselves use off the shelf SSDs for internal storage because SD and CF cards simply aren't fast enough. Only measuring the transfer rate to the hard drive's cache would entirely defeat the purpose of this benchmarking software.

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• Comment Link Wednesday, 02 September 2015 00:29 posted by Gary

  You both have valid points. Blackmagic's speed test will not be accurate until you saturate the cache on the NAS appliance.
  The NAS have 16G of ram so you will need to copy over several large files around 16G each. I would use a different computer attached to the USB3 interface. Then run the test on the thunder bolt interface with black magic while the files are being copying from USB3.
  
  This will give you an idea what transfer rate and bandwidth you can expect during disk high utilization.
  
  Some NAS have a option to disable the cache.

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• Comment Link Thursday, 03 September 2015 18:08 posted by Tor

  A speed of close to 1000Mb/s is amazing, but with 8 disk, not unrealistic.
  With a total price tag close to Canon EOS 5D Mark III or a Nikon D750 body, it is out of my reach :(
  With 8 disks, one disk will break 8 times more than a single disk. Even with RAID6, this system is not foolproof, so keep a backup on a seperate system.

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• Comment Link Saturday, 05 September 2015 10:40 posted by Edward

  does this i5 or i7 make any difference? http://www.span.com/product/Qnap-Desktop-NAS-10GbE-TB2-TVS-871T-i7-16G-8-Bay-JBOD-RAID-0-1-5-6-16GB-RAM-Core-i7-10GbE-Thunderbolt-2~51031

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• Comment Link Monday, 07 September 2015 02:53 posted by DoneIT

  Welcome to 2010... People have been swapping to QNAP for years. Drobo is only "known" in the photography industry, outside of it no one touches them. It's only because the Kelby-clique promoted Drobo and majority of photogs have no clue about this topic

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• Comment Link Monday, 07 September 2015 02:58 posted by Prime IS where its at

  I truly do not understand why people are wasting money on such things. Buy a PC for starters, it'll give you a better screen and much more power than any Apple product you own.
  Next stick as many harddrives inside that PC as you like, it'll be MUCH FASTER than any NAS you use.
  
  Now you're going to say "but my NAS is a back solution" well, that's what Amazon prime is for. Your NAS setup = over $1000. My prime will take over 10 years to cost me that and I have all my photos uploaded there.

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• Comment Link Sunday, 14 February 2016 05:43 posted by Chris

  The video is misleading. Matt shows us four 4TB seagate drives he's going to install. He doesn't show us any additional. When we see the front of his NAS, we see all 8 LED's flashing, indicating there are 8 devices in the drive bays. He mentions nothing of an SSD cache, but with the speeds he's claiming to get, I suspect he does have 4 SSD drives installed to achieve that. Why do I believe this?
  
  I have this NAS connected via thunderbolt (2) as well. I have 1TB SSD cache in bays 1 & 2, and six 4TB drives in the remaining bays set up in raid 6 (as Matt claims his is) and the best speeds I've been able to get with black magic benchmark is 324 MB/s write and OCCASIONALLY 900+ MB/s on the read, but typically in the mid 700's for read. I've varied every possible configuration to try to get higher numbers, but failed. Even raid 10 isn't getting me an improvement. Now for a more practical test, when transferring large files to the NAS, I'm averaging 85 MB/s according to the NAS's own thunderbolt bandwidth graph.
  
  To be honest, it's a nice NAS with nice features and the thunderbolt card is a plus, but I'm not overly impressed with the performance given the price tag. There are other products out there that can out perform this one in regards to thunderbolt.
  
  (Matt, please fill us in on the full setup including your black magic setting, and whether or not you're using SSD cache and those settings, otherwise your benchmark screenshot is not of much use. I'd love to know if I'm doing something wrong, but I'm not getting anywhere near the numbers you are)

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