Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Gregger]

I have had a DIR-655 (HW A4, FW 1.21) for a couple of years, but only using it to connect my laptop with a DWA-652.  Not overly worried about speed, as long as it was faster than my previouos G wireless.

I'm running Windows Home Server (OEM) on a gigabit LAN.  I use WHS to backup all machines (two desktops and a server) on my network every night.

Recently I decided to go completly wireless on all machines except for the WHS box.  So the first thing I bought was an ASUS PCE-N13 PCI-X adapter for my "devel" machine which is running Windows 7 Home Premium.  After running some transfer tests (using iperf) between this box and my WHS box, I noticed that I was not getting anywhere near "300 mbps" rated throughput.  I read the "sticky" on speed and did not see anything in that doc that would affect me.

Anyway, using iperf I typically was getting a speed between 55 to 60 mbps.  When running the same test using the gigabit LAN link, my speed was in the range of 260 to 270 mbps.  So I thought it must be the ASUS adapter.

Yesterday, I went out a bought a D-Link DWA-552 PCI adapter and then re-ran the same tests.  I was expecting a speed increase seeing as how both adapter and router were both D-Link products.  This time however, my speed dropped to 48 to 51 mbps.

While I'm not using the latest firmware on the DIR-655 (heard too people had problems after doing an upgrade), I am using the lastest DWA-552 drivers.

When using the ASUS, I see a connection speed of only 150 mbps while the D-Link does see a connection speed of 300 mbps.  Watching the wireless connections on the router shows that both devices connect to the router at between 88 and 90 percent (distance between router and client is 6 feet).

Watching the connection using task manager on the client shows that with the ASUS I'm getting around 42% network utilization while with the D-Link I only get 27% network utilization.

What is the best network throughput can I expect to get using the DIR-655 and how do I achieve this?   I thought that with wireless-N I would get thoughput at least that of a 100 megabit network, but it appears that even that is not atainable.

Any ideas or suggestions would be appreciated.

Greg ...

[Alezis]

I have had a DIR-655 (HW A4, FW 1.21) for a couple of years, but only using it to connect my laptop with a DWA-652.  Not overly worried about speed, as long as it was faster than my previouos G wireless.

I'm running Windows Home Server (OEM) on a gigabit LAN.  I use WHS to backup all machines (two desktops and a server) on my network every night.

...

Anyway, using iperf I typically was getting a speed between 55 to 60 mbps.  When running the same test using the gigabit LAN link, my speed was in the range of 260 to 270 mbps.  So I thought it must be the ASUS adapter.

...

Greg ...

I was wondering if I understood this correctly. Your WHS can pump 270 mbps That is crazy fast transfer !!!

I run a server (not WHS) and I am never near 270 mbps on a gigabit network. I run 3 500gig drives in RAID 5 and I have never seen more than ~120 mbps eventhough the connection display a gigabit connection...

If you have one fairly good SATA drive, you can acheive something like 50~60 mbps... so 270 is really fast... I'm curious what is the configuration of your drive system in that WHS !

I mean, 270 mbps, you need a crazy RAID system or really high performance SSD drive to acheive this kind of file transfer speed... just wondering...

One other thing I have notice using wifi to transfer files is if you have a mix wifi setup, it seems that the slowest device will slow down the whole wifi network to that speed... In other words, if you have a G and an N device on the same wifi network, your N computer will never have hight transfer rates...

I also run the DIR-655 v.1.21NA for many years without ANY issues. I am reaching the maximum transfer that my drive system can acheive in my server... you can't go faster than what the drives can read or write !

Thanks !