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

QNAP TS-559 ProWe've retested the QNAP TS-559 Pro with new firmware and updated the NAS Charts.

QNAP found that our previous test results we much lower than their internal tests using similar test methods. After investigation, they found that write cache was not enabled on our review sample.

QNAP has enabled write caching for EXT4 volumes since they made EXT4 the default for RAID volumes. But a bug in the 3.2.6 Build 0423T firmware we used for testing did not properly enable it by default. So QNAP released 3.2.7 Build 0525T firmware and requested a retest, which we performed.

The iozone benchmark plots for the retest are shown below, along with the original results in the graphic below it.

TS-559 Pro Throughput vs. file size - retest

TS-559 Pro Throughput vs. file size - retest

The main difference in results is a boost in throughput at 512 MB and larger file sizes. But since we don't include anything over 125 MB/s in our calculation, the new charted average write performances include only two data points (2 GB and 4 GB).

TS-559 Pro Throughput vs. file size - original test

TS-559 Pro Throughput vs. file size - original test

Average RAID 5 write performance using a Gigabit Ethernet connection now averages 105.5 MB/s (vs. 85.2 MB/s before) for file sizes between 32 MB and 4 GB, with cached behavior not included in the average calculation. Average RAID 5 read performance is still significantly lower, but improved, measuring 74.1 MB/s (vs. 65.4 MB/s). So the TS-559 Pro now ranks above the TS-459 Pro in the RAID 5 charts.

RAID 5 File copy performance using our Vista SP1-based test now show the TS-559 Pro faster than the TS-459 Pro, with 92.1 MB/s (vs. 66.3 MB/s before) write speed and 95.3 MB/s (vs. 71.9 MB/s before) read.

Use the NAS Charts to further explore the TS-559 Pro's performance and compare it to other products.

More NAS

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

Featured Sponsors



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

Hi everyone,I'm trying continue with my RT-AC66U, I love the Merlin FW and I know that the best option is choose the Fork from John right now for lega...
Hey everyone,I followed this guide to setup WOL for a Plex server using iptables to log when a certain port is forwarded to, then a while loop in wan-...
New features and enhancements:Installation flow improvement.Added support for SHA256 certificates in lieu of MD5 for OpenVPN.Bug Fixes:Fixes the UPnP ...
I have a RT-AC86U. While setting up the router I noticed that the WAN - Virtual Server / Port Forwarding is not working as it is shown in the ASUS FAQ...
Hi,I was trying to setup OpenVPN Server on my Asus RT-AC5300 so that my iPhone and Mac can connect back home via OpenVPN.I discovered the FAQ links to...

Don't Miss These

  • 1
  • 2
  • 3