Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Router Charts

Click for Router Charts

Router Ranker

Click for Router Ranker

NAS Charts

Click for NAS Charts

NAS Ranker

Click for NAS Ranker

More Tools

Click for More Tools

NAS Reviews


The 809 was tested with our standard NAS test processes. I upgraded to the latest 2.1.6 Build 0428T and used the Samsung HE103UJ 1 TB drives installed by QNAP. Tests were run with four drives configured in RAID 0 and 5 with a 1000 Mbps LAN connection.


I first checked backup performance with the results summarized in Table 1 along with the TS-509 Pro's for comparison. Best performance is surprisingly with the USB drive NTFS-formatted! You can check the 809's backup rankings for FAT and EXT3 formats, where it ranked fourth and sixth.

Product QNAP TS-809 Pro
Backup Throughput (MBytes/s)
QNAP TS-509 Pro
Backup Throughput (MBytes/s)
USB - FAT32 19.8 19.2
USB - EXT3 20.3 24.1
USB - NTFS 22.7 21.3
Table 1: Attached backup throughput test summary

I also tested Remote Replication for NAS-to-NAS backup to a TS-439 Pro. Table 2 summarizes the results for full backups of the test folder without and with the encryption option (SSH connection) enabled, which really slows things down.

Product QNAP TS-809 Pro
Backup Throughput to QNAP TS-439 Pro target
QNAP TS-439 Pro
Backup Throughput to QNAP TS-809 Pro target
NAS-NAS 31.89 33.07
(SSH encrypted)
10.24 11.16
Table 2: Networked backup throughput test summary


Figure 5 presents a summary of the benchmark tests run for the 809 with RAID 0 and 5 write and read plotted. Performance boost at the smaller file sizes isn't extreme for either RAID 0 or 5 writes and read performance is pretty flat across all file sizes tested. As with the TS-439 Pro, you don't give up a lot of speed by using RAID 5 vs. RAID 0.

Performance benchmark summary

Figure 5: Performance benchmark summary

RAID 0 and 5 Performance with a 1000 Mbps LAN connection averaged over the 32 MB to 4 GB file sizes and with cached results above 125 MB/s removed from the average is summarized in Table 3. The 809's lower ranking in the RAID 0 write test is due to the effects of removing cached performance from the calculations.

Product QNAP TS-809 Pro
Average Throughput
Chart Rank
RAID 0 Write 74.3 4
RAID 0 Read 84.5 1
RAID 5 Write 65.8 1
RAID 5 Read 80 1
Table 3: Average throughput summary

Performance - Competitive

Since the 809 stands alone as an eight bay NAS (at least among the products that I have tested), I'll have to compare it against six and one seven bay competitors: NETGEAR's ReadyNAS Pro, QNAP's TS-639 Pro and Thecus' N7700.

For RAID 5 write (Figure 6), the products clearly cluster in two groups, the higher-performing TS-809 Pro and Thcus N7700 and the (relatively) lower performing ReadyNAS Pro and TS-639 Pro. At the largest file sizes, there is around 20 MB/s separating the two groups!

Competitive RAID 5 write comparison  - 1000 Mbps LAN

Figure 6: Competitive RAID 5 write comparison - 1000 Mbps LAN

For RAID 5 read (Figure 7), the 809 actually comes out on top across all "large" file sizes. Note the big drop in the N7700's throughput above 512 MB.

Competitive RAID 5 read comparison  - 1000 Mbps LAN

Figure 7: Competitive RAID 5 read comparison - 1000 Mbps LAN

More NAS

Wi-Fi System Tools
Check out our Wi-Fi System Charts, Ranker and Finder!

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Over In The Forums

HelloI'm using a RT-AC66U and wpa2-enterprise at home. Connecting to my WLAN works fine but the certificate I get the first time is outdated and from ...
Hey guys. I'm feeling pretty stupid here to even have to post this.... I would love any advice as to what I'm missing.I have a cable connection with c...
Thought I would mention this...It's a great package, hopefully someone picks up the baton and carries it moving forward...
Got a weird issue. Few months back I wasn't able to log into my modem. Thought the bookmark was corrupted so I manually typed in the address and boom,...
Hello,Since a month or 2 my wireless internet is much slower than before. I have 3 accespoints (2x netgear WNDR4300 and 1x dlink DIR600) so wifi cover...

Don't Miss These

  • 1
  • 2
  • 3