D-Link Forums
The Graveyard - Products No Longer Supported => D-Link Storage => DNS-323 => Topic started by: Clayton on October 15, 2009, 11:32:51 AM
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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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Are you using a gigabit connection? Do you have jumbo frames enabled all around?
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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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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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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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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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Dumb question, does your PC have a gigabit NIC? What's the exact make/model of the NIC or motherboard?
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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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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
"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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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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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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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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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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Actually, I'm transferring over the network this is not disk to disk but computer to computer.
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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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True, you make a good point there, thanks
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True, you make a good point there, thanks
I wish I were wrong, I'd like to see 50 mbyte/sec transfers to/from my DNS-323! ;D
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I get an average of 6 - 11 MBps trasnfering to my 323. So you in the ball park.
The biggest thing like someone else mentioned. These are not a desktop pc. More compact chipsets , less power.. etc ..
I am in the process of taking everything off my 323 and moving my 2 - 1.5 GB WD Black drives into another cheap computer I just built..
Tired of waiting for the new 1.8 firmware , my PS3 just isn't happy !!
M
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I get transfers in the 18-25 mbyte/sec range to/from my DNS-323 with a pair of Samsung 1.5TB drives installed in RAID-1. Speeds were faster when I had it running RAID-0, but obviously reliability was not as good. :)
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I get transfers in the 18-25 mbyte/sec range to/from my DNS-323 with a pair of Samsung 1.5TB drives installed in RAID-1. Speeds were faster when I had it running RAID-0, but obviously reliability was not as good. :)
You're the first person I've seen say that RAID-0 was faster than RAID-1 - for most of us RAID-0, RAID-1 and standard disks have all delivered pretty much the same throughput.
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I actually was getting faster read speeds when I had a pair of 500gig drives in RAID-0, the write speeds seem similar. The odd part is, I'd have expected the write speeds to be slower, since there are two writes going on now.
I still can't imagine how people are getting 35-40gbytes/sec from these things in any mode.
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I'm hovering around 10 MB/sec to and from my computers Windows 7, to the NAS and all compuetrs/switch is 1GB LAN connection, but they don't have jumbo frames in the NIC properties so I found a computer that does and has a ASUS motherboard with jumobo frames in the NIC properties and from that computer I have done a transfer to the NAS of a 3.5GB ISO image and getting around 14MB/sec, OS is XP Professional, not sure if enabling jumbo frames made it 4 MB/sec faster or XP Pro did, but that's the difference with jumbo frames enabled.
My NAS is RAID-1 anyway.
Still getting around 35 - 45MB/sec from computer to computer.
Just my 2 cents worth