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Lan Speeds ?

  • LAN
  • Hard Drives
  • Networking
Last response: in Networking
May 23, 2011 9:11:12 PM

I have a windows 7 desktop with a ssd drive for the os and a 5400rpm hdd for anything else.It is also gigabit network capable.
I also have a sever running windows server 2008 standard that has 12tb in raid 5 using 5400rpm 2tb drives and the os drive is a 5400rpm hdd, it also has a gigabit rj45.
I have both connected to a d-link 655 wireless router that is also gigabit capable using cat6 cable.

Now the problem is I can only seem to transfer things back and forth between the two at a average of 15mbs. I assumed in theory that I could get a least 30 to 40 mbs with the hdd that I am using. I don't have anything else running etc. CPU is at 1% and network is only at about 2-4 percent.

Both drivers are up to date. I am using a Highpoint 2320 raid card.
I ran netCPS and here are my results...
Client connected from
---> CPS 2057088.75 KPS: 2008.88 MPS: 1.96
Avrg CPS 1975798.50 KPS: 1929.49 MPS: 1.88
Peek CPS 2224725.75 KPS: 2172.58 MPS: 2.12
Client disconnected. 104857600 Kb transferred in 53.07 seconds.

I did some more looking and I found on my server under device manager if I check advanced properties, my speed & duplex can only be set to either 10Mbps or 100Mbps, not gigabit speed. But when I look under local Area Connection Status, I find that my speed i at 1.0 Gbps. I am not sure if this could be the problem though. So I tried to update the driver again and it is still the same.

Does anyone have any ideas to what my problem may be.

More about : lan speeds

May 23, 2011 9:32:32 PM

A thought...

On the server: I would try copying a gig (+/-) of data from the OS to the RAID 5 drives. What is your speed?

Even though the drives are pretty new, plus they are RAIDed, they will still create a bottleneck. They can only read and write "x" fast....

May 23, 2011 9:54:12 PM

I am in a similar situation as you and I am using a highpoint 620, which is only 2 sata drives, raid 1. I am getting a write speed of 45Mbps, which i thought was kinda slow even if I am RAID 1. I don't really have an answer to your problem. I just wanted you to know that the LAN isn't your problem. I have the same router as you and cat6 ran to everything. Even at 10Mbps, old 10base-t speed, you are still transfering much less speed than that can handle.

I think tkrl26 has a good suggestion. Also, what is the other PC you are transferring the files back and forth from? Lets work this out.
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May 23, 2011 10:18:48 PM

I xfered a 1.1gb file from the os drive to the raid and I got a average write speed of 75Mbps and a top speed of 84 Mbps. I also thought it may be the cable so I cut and crimped a completely new section to try and it also is the same.
May 23, 2011 10:27:28 PM

My specs are as follows:

Windows 7 64
8gb RAM
ssd os drive/hdd drive for everything else
gigabit RJ45

AMD Sempron 140
Windows Server 2008
2gb RAM
hdd for os
Gigabit RJ45
May 23, 2011 11:25:31 PM

hm, and what about the desktop, OS to other drive transfer speed?

On Win7, you could disable QOS, might help (a little). QOS reserves 20%-25% of Network speeds (you cannot use that extra %), even if you are not using it... Unless you disable it. I have tried all the registry hacks in the book, none of them really do any good...
May 23, 2011 11:38:24 PM

Desktop OS drive to desktop hdd i get max 400Mbps and average 250 Mbps. I have QOS turned off on the router and win7 already.
May 23, 2011 11:40:44 PM

I had this same issue with my desktop last month and i had to completely wipe and reinstall the os to fix it. I would like to avoid doing the same with the server, cause of downtime and I dont want anything to "accidently" happen to my raid data.
May 30, 2011 10:15:07 AM

So no one has any suggestions?