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Re: Copying from ReadyNAS Duo slows to a crawl
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Copying from ReadyNAS Duo slows to a crawl
For years when I have tried to copy files to/from my ReadyNAS Duo, it has been an excruciating experience--very slow. After a computer restart or at unexplained times, speeds seem to be OK, but most of the time, they are so slow that I can't even get images to show thumbnails. Now I'm trying to copy the contents of my shares to an external USB drive on my computer, and it's going to take years at these speeds.
I have my ReadyNAS Duo connected to a Verizon Fios router (ActiontecMI424WR Rev. I). I'm running Windows Vista, and it's connected to the router via ethernet cable. According to RAIDiator 4.1.14, the status is 1000 Mbit / Full-Duplex with MTU of 1500.
Help!
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Re: Copying from ReadyNAS Duo slows to a crawl
If the PC is windows, please try NasTester, and report the speed it gives (http://www.808.dk/?code-csharp-nas-performance)
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Re: Copying from ReadyNAS Duo slows to a crawl
Running warmup...
Running a 400MB file write on Y: 5 times...
Iteration 1: 11.25 MB/sec
Iteration 2: 10.56 MB/sec
Iteration 3: 11.25 MB/sec
Iteration 4: 11.25 MB/sec
Iteration 5: 11.25 MB/sec
-----------------------------
Average (W): 11.11 MB/sec
-----------------------------
Running a 400MB file read on Y: 5 times...
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Re: Copying from ReadyNAS Duo slows to a crawl
11 MB/sec sounds like there is a fast ethernet link on the path.
Are the PC and the NAS both running gigabit?
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Re: Copying from ReadyNAS Duo slows to a crawl
The network connection status in Windows is showing 100 Mbps.
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Re: Copying from ReadyNAS Duo slows to a crawl
Does your Windows machine have a gigabit port? If yes, then perhaps you could try putting a gigabit switch between the router and your PC/NAS.
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Re: Copying from ReadyNAS Duo slows to a crawl
What equipment is on the path between the NAS and the PC?
I am thinking you are getting packet loss due to buffer overrun. If so, the solution is either to ensure you have ethernet flow control enabled in the device that is doing the downspeed to 100 mbits, or (not as good) set up the NAS to run on 100 mbit ethernet.
Of course if you can get end-to-end gigabit, that would be better still.
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Re: Copying from ReadyNAS Duo slows to a crawl
The only equipment in the path is a Verizon Fios router (Actiontec MI424WR Rev. I). Do you know how to enable ethernet flow control? I logged in and looked through all the router settings and couldn't see that. Is it something I do in Windows?
The router does show the port that the NAS is connected to is gigabit: "Connected 1000 Mbps Full-Duplex."
If it turns out the best option is to set up the NAS to run on 100mbit ethernet, how do I do that?
Thanks for your help.
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Re: Copying from ReadyNAS Duo slows to a crawl
Looking at the router datasheet - it does support 802.3x flow control. So that shouldn't be the issue. If you have jumbo frames enabled on the NAS (MTU > 1500) then you should set the MTU back to 1500. 100 mbit ethernet is limited to a 1500 byte MTU.
If your router lets you set the link speed to 100 mbits for the NAS, you can try that. Another appoach (slightly more work) is to directly connect the NAS ethernet to the PC (bypassing the router). To do that you'd need to set up a static IP address on the PC temporarily. That's called a direct connect procedure, and it is briefly outlined here: http://kb.netgear.com/app/answers/detail/a_id/21414/~/how-do-i-direct-connect-between-readynas-and-p...
So try one of those options (just as a test) and see if the speed stabilizes.
Is this PC a laptop or a desktop model? If it is a desktop, then a reasonable option is to add on a gigabit ethernet interface. You can get them for $10-$20 US.
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Re: Copying from ReadyNAS Duo slows to a crawl
OK, I set the link speed to 100 mbits for the NAS. We'll see how that goes. Thanks!