DSM-G600, DNS-3xx and NSA-220 Hack Forum

cinergi · 2011-03-31 18:29:31

Hi,

I recently added an Intel PCI Express gigabit NIC to my Windows 7 x64 PC to enable faster SMB file transfers from/to my DNS-323. The Ethernet interface built into my PC's motherboard is only 100 Mbps. With the new NIC, both my PC and router show the connection speed as 1.0 Gbps as expected. However, the SMB file transfers don't seem to be any quicker than with my previous 100-Mbps connection, and if I look at the LAN throughput graph in Windows Task Manager, it only peaks to 10%, i.e. 0.1*1000 Mbps = 100 Mbps.

What could be the problem here? I'm not using jumbo frames because some of my LAN devices don't support them, but even with regular 1500-byte frames, it should be faster than 100 Mbps, right?

If it matters, my router is a Linksys WRT-610N running DD-WRT firmware.

Thanks,
cinergi

fordem · 2011-04-01 00:20:32

With gigabit ethernet, a DNS-323 is capable of transferring data at speeds of perhaps 20~25MB/sec, and with jumbo frame, maybe 30MB/sec - typically reads from the NAS are faster than writes to it, and transfer speeds with large numbers of small files are mediocre at best.

If you want to run jumbo frame, you don't need all the devices on the network to support it, just the ones through which the jumbo traffic must pass - so if it's the one PC and the DNS-323 and the router or switch that they are both connected to, that will work, the rest can be gigabit with jumbo frame, or even 100mbit, it doesn't matter.

Why might it not be any faster than 100mbit? Well - the data transfer starts at a disk, and finishes at another disk - it's not just the network, if those disks are slow, and fragmented, the throughput may be less than you expect - but - you do need to recognise, you're dealing with a low power NAS and you're just not going to see blazing speeds from it.

unmesh · 2011-04-02 01:58:06

FWIW, I've never been able to exceed 15MB/s over Gigabit infrastructure for large file transfers using Windows 7 Explorer to do the copying. I get 50MB/s to/from my WHS NAS over the same infrastructure. (No jumbo frames, though)

I've heard that NFS and/or FTP transfers might be faster but have not measured their performance.

Last edited by unmesh (2011-04-02 02:01:33)

breasthead · 2012-05-14 16:12:28

I have a similar question with transfers. I've finally just upgraded to gigabit connections for NAS, but I'm seeing the opposite to fordem? I can write to the NAS (drag and drop through finder) at ~17MB/s but when I go the other way from NAS to mac, I'm only able to get 5-6MB/s? What is weird is that I used to be going at 8-9MB/s down on my old 10/100 switch?
I can transfer at ~50MB/s from Mac to Win7 machine though. Are there any settings that I'm supposed to have changed, other than LAN port speed (set to auto detect) to allow giga down speeds?

Rival · 2012-05-29 16:15:47

I've reached 34600 kB/sec (~33.8 MB/sec) samba download from a freshly started NAS to laptop SSD with 9k Jumbo, Windows 7 x64 and Total Commander x64. My previous x86 system was only capable of about 25 MB/sec. After a few months of uptime I can't reach these speeds, after some time I have to restart NAS.

maldojr · 2012-06-15 23:27:32

I am having the same problem. In my dns not available Link speed 1000

fordem · 2012-06-16 17:58:43

maldojr - you seem to be having a different problem - the other folks have 1000 link connections that are slow.

If you're not getting a 1000 link with your DNS-323, make sure it's connected to a gigabit switch, and that the cable is properly wired.

DSM-G600, DNS-3xx and NSA-220 Hack Forum

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#1 2011-03-31 18:29:31

Slow file transfer speed with gigabit NIC

#2 2011-04-01 00:20:32

Re: Slow file transfer speed with gigabit NIC

#3 2011-04-02 01:58:06

Re: Slow file transfer speed with gigabit NIC

#4 2012-05-14 16:12:28

Re: Slow file transfer speed with gigabit NIC

#5 2012-05-29 16:15:47

Re: Slow file transfer speed with gigabit NIC

#6 2012-06-15 23:27:32

Re: Slow file transfer speed with gigabit NIC

#7 2012-06-16 17:58:43

Re: Slow file transfer speed with gigabit NIC

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