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Author Topic: Network transfer speeds  (Read 16159 times)

Clayton

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Network transfer speeds
« on: October 15, 2009, 11:32:51 AM »
My desktop, laptop, switch and DNS-323 are all 1GB networked and all the drives are 7200RPM, but transferring data to the DNS-323 is very slow.

When transferring a 3GB ISO from computer to computer I'm getting around 30MB/Sec transfer speeds
When transferring a 3GB ISO from computer to DNS-323 I'm getting around 7MB/Sec transfer speeds

When transferring a 1GB bunch of folders with mp3's in them from computer to computer I'm getting around 17MB/Sec
When transferring a 1GB bunch of folders with mp3's in them from computer to DNS-323 I'm getting around 6MB/Sec

Is this normal? or maybe it is that I'm using Raid 1?
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #1 on: October 15, 2009, 01:30:11 PM »
Are you using a gigabit connection?  Do you have jumbo frames enabled all around?
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #2 on: October 15, 2009, 02:36:53 PM »
Yes, everything is gigabit, I have jumbo frames enabled on the DNS-323 but not sure about the PC's, can not see anything about jumbo frames in the network card properties.
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D-Link Multimedia

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Re: Network transfer speeds
« Reply #3 on: October 15, 2009, 03:05:57 PM »
What jumbo frame setting is your DNS-323 at? Does your router support jumbo frames? Maybe turn it down to 4000 bytes to see if theres improvement.
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #4 on: October 15, 2009, 03:34:41 PM »
Quote from: claytonb on October 15, 2009, 02:36:53 PM
Yes, everything is gigabit, I have jumbo frames enabled on the DNS-323 but not sure about the PC's, can not see anything about jumbo frames in the network card properties.
You MUST configure the machine you're accessing it for jumbo frames as well, or you won't get any improvement in access.


In Device Manager open the properties of your wired gigabit NIC (jumbo frames are not applicable to wireless).

Select the Advanced tab.

In the list of properties, find Jumbo Packet or similar wording.

To follow the 4k recommendation (which I use here), select 4514 bytes.

Click OK.


Change the DNS-323 to 4K jumbo frames as well.

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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #5 on: October 15, 2009, 04:14:54 PM »
I've changed the jumbo frames in the DNS-323 from 9000 to 4000.
Still can not find anything in the nic properties resembling jumbo frames or similar wording.
all the PC's and NAS is going through the 3Com gigabyte switch so should not need to configure the router.
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #6 on: October 15, 2009, 04:24:13 PM »
Dumb question, does your PC have a gigabit NIC?  What's the exact make/model of the NIC or motherboard?
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #7 on: October 15, 2009, 04:31:46 PM »
Yes both pc's have gigabit nic
One is a laptop Toshiba Tecra M5 and the other is a Dell Precision T3400
Toshiba = Intel(R) PRO/1000 PL Network Connection
Dell = Broadcom NetXtreme 57xx Gigabit Controller
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #8 on: October 15, 2009, 04:42:43 PM »
I concede that the laptop may not have it, my Toshiba Tecra with gigabit here doesn't offer the option in it's driver either.

I can't believe the other one doesn't have it.

From the Broadcom 57xx FAQ



Quote
"Jumbo MTU" is a parameter that allows the adapter to transmit and receive oversized Ethernet frames that are greater than 1514 bytes but less than 9000 bytes in length. Note that this parameter requires a switch that is able to process large frames.


How can I configure Jumbo MTU?

   1. In Microsoft Windows, right-click the Network Adapter in Network Connections, and then click Properties.
   2. Click the Configure button and then the General tab. Jumbo MTU is set at 1500 bytes by default. To increase the size of the received frames, increase the byte quantity in 500-byte increments up to 9000 bytes.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #9 on: October 15, 2009, 06:55:58 PM »
No, it's not in the Broadcom properties, I'm running Windows 7 x64 and the only settings I have is

Flow Control
Priority & VLAN
Proxy ARP Offload
Proxy NS Offload
Speed & Duplex
VLAN ID
Wake Up Capabilities

Driver Date 28/05/2009
Driver Version 12.2.0.3


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gunrunnerjohn

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Re: Network transfer speeds
« Reply #10 on: October 16, 2009, 05:55:30 AM »
As the previous post suggests, don't look in the Advanced tab, but rather the General tab.

If it's really not there, you either need updated drivers or a different PCI NIC to use jumbo frames.  I can tell you that they make a significant difference in the speed of file transfers, at least they did for me.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #11 on: October 17, 2009, 05:08:10 PM »
Strange, I just transferred the My Videos folder 140GB in size with many AVI files on it from the laptop to the desktop computer at 55 MB/second but transferring the My Videos folder to the DNS-323, I only get 5 MB/second so I'm at a lost here now
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #12 on: October 17, 2009, 05:25:50 PM »
You're missing a basic fact.  Transfer speeds disk to disk within your machine are always going to be faster than transferring over the network.  I get similar speeds when transferring on my machine between internal drives.

The Transfer speed to/from the NAS is dependent on a lot of factors.  OTOH, your computer has direct access to the disk drive in the machine.  Apples and oranges.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

Clayton

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Re: Network transfer speeds
« Reply #13 on: October 17, 2009, 05:54:20 PM »
Actually, I'm transferring over the network this is not disk to disk but computer to computer.
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gunrunnerjohn

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Re: Network transfer speeds
« Reply #14 on: October 18, 2009, 05:33:58 AM »
OK, but you're still missing the fact that the speed of each network devices determines the transfer speed if network speed is not the issue.

The DNS-323 doesn't have the computing power that either of your computers have.  The fact is that you'll never see transfer speed anywhere close to that from the DNS-323.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.
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