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 How To

Trying out Vista

If you have been following the discussions in the Forums, you know that multiple people have reported significantly improved file copy performance when using Vista, especially SP1. The Inside Vista SP1 File Copy Improvements blog post by Mark Russinovich explains the background of the improvements. The post also reveals that, contrary to other reports, the improvements are not primarily due to Vista's use of SMB2, although SMB2 is in the mix.

So I hitched up my pants, Ghosted the iozone machine and installed Vista Home Premium. Of course, Vista didn't include drivers for the Intel 82566DM gigabit LAN interface, so I had to track down the all-OS install version of the Intel PRO LAN drivers (LAN_ALLOS_11.2_PV_TL3_132319_FULL.EXE), copy them to a flash drive and transfer them to the iozone machine. I also let Vista do its Windows Update thing, which took another hour or so.

I was in a hurry to get started, however, and didn't notice that the updates didn't include SP1, with its reported file copy improvements. So I inadvertently got a look at performance both without and with the improvements—and it's fortunate that I did!

Figure 7 includes the Vista results, which include a few other variations. I dropped the 2GB and TS-509 Pro results, to keep chart clutter down. I also narrowed the Y axis, to better see the plot differences.

Plotted are:

  1. 1 GB - NAS memory @ 1 GB, iozone memory @ 1 GB
  2. 1GB, VRaptor - NAS memory @ 1 GB, iozone memory @ 512 MB
  3. 1GB, VRaptor, No dup - same as #2, but with WHS file duplication disabled
  4. 1GB, VRaptor, No dup, iozone Vista - same as #3, but with Vista on iozone machine (still @ 512 MB)
  5. 1GB, VRaptor, No dup, iozone Vista, ct - same as #4, but using Intel PRO/1000 CT PCIe adapters on iozone and BigNAS machines.
  6. 1GB, VRaptor, No dup, iozone Vista SP1 - same as #4, but Vista SP1 on iozone machine.

Figure 7 shows the write runs plotted. Best performance is with the internal gigabit adapters on both the iozone and "BigNAS" WHS machine, file duplication disabled and Vista on the iozone machine.

The reason that I tried the add-in PCIe adapters was to see if the internal adapters were somehow limiting performance. Instead, I found that the on-board adapters produced better throughput! But both Vista runs produced significantly better write throughput—~100 MB/s, even after OS caches were exhausted!

Write Performance Comparison w/ VelociRaptor and Vista
Click to enlarge image

Figure 7: Write Performance Comparison w/ VelociRaptor and Vista

But the real surprise was worse performance using Vista SP1! Cached throughput is better than with XP running on the iozone machine. But as soon as iozone machine cache is exceeded, performance falls below that of XP!

Figure 8 holds some good news, however. It appears that Vista running on the iozone machine breaks us through the "Wall" to a new 77 MB/s high. That configuration even manages to stay up near 60 MB/s for the 1 and 2 GB file sizes!

Read Performance Comparison w/ VelociRaptor and Vista
Click to enlarge image

Figure 8: Read Performance Comparison w/ VelociRaptor and Vista

Everything else however, except for the "1 GB" using the Seagate drive, clusters together at the "Wall". The differences you see are not significant and probably within the accuracy of the test method.

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

Folks,For over a long time I cannot get port forwarding work with openvpn on my RT-AC87u. If PPTP is engaged then all works but once openvpn is up all...
Hi,I have just added my first AiMesh node:Main AiMesh : RT-AC68U ( AP mode )Second Aimesh : RT-AC67UAll seems to work wells, but I have have noticed t...
Hi all,I friend of me has update his network, so I have a "new" ac56u.I have installed merlin and follow this guide (
Greetings,I have 2 issues with 384.15 firmware on my RT-AC86UIn firewall, if I select Respond ICMP Echo (ping) Request from WAN to NO, I can still pin...
Sorry if this has been answered already, but I couldn't find it searching....I have a simple home setup: ASUS RT-AC66U_B1 (connected to a DSL modem) w...

Don't Miss These

  • 1
  • 2
  • 3