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Poor transfer speeds to NAS via Virgin Media Superhub
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Old 25-04-2012, 00:27   #1
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Poor transfer speeds to NAS via Virgin Media Superhub

I have a PC and a a Netgaer NAS drive wired to a new Virgin Media Super Hub. My PC has a gigabit NIC and the super hub and NAS are both gigabit. I'm using cat 5e cables throughout

When transferring files using FTP from my PC to the NAS I get a constant 4 MB/s which is very slow.

Any ideas on where the bottleneck could be?

Thanks
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Old 25-04-2012, 13:40   #2
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Re: Poor transfer speeds to NAS via Virgin Media Superhub

Comparing a superhub to an asus rt n16 running tomatousb, I find throughput over my LAN,using the asus, has improved tremendously.

NAS seem to be a bit of a bottleneck in themselves however I can pull files from my NAS at around 10MB/sec.
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Old 25-04-2012, 21:12   #3
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Re: Poor transfer speeds to NAS via Virgin Media Superhub

I've doen fiddling with MTU on the PC\Super Hub\NAS and got it up to about 8MB/s. That will ahve to do!
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Old 25-04-2012, 21:16   #4
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Re: Poor transfer speeds to NAS via Virgin Media Superhub

I get NAS write @ 26MB/s and read @ 45MB/s through my superhub (wired on gigabit all the way) which is roughly the NAS spec..

Have noticed though that with very large files it does drop the write speed drops to 6MB/s for some weird reason (I wonder if it's a fragmentation issue)
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Old 25-04-2012, 21:21   #5
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Re: Poor transfer speeds to NAS via Virgin Media Superhub

You might want to try TCP Optimizer from Speedguide.net

http://www.speedguide.net/downloads.php
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Old 30-04-2012, 16:46   #6
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Re: Poor transfer speeds to NAS via Virgin Media Superhub

Quote:
Originally Posted by GavChap View Post
You might want to try TCP Optimizer from Speedguide.net

http://www.speedguide.net/downloads.php
This is an option - although messing with your TCP window size could potentially increase read / write speeds on your LAN, which will be extremely low latency, will likely cause you to have issues when downloading things off the internet etc.

also if you have windows Vista or later, the TCP window is tuned automatically.
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