Unfortunately no one can be told what fun_plug is - you have to see it for yourself.
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Folks,
I own a DNA-233 loaded with 2*500Gb JBOD. It works fine as an audio/video fileserver for serveral XMBC-modded XBOXes scattered in the house, BUT :
if I attempt to copy more than one file from a PC, copy time increases until I get an error message stating that the target is invalid. This behaviour is definitively reproductible, and it happens at soon as the second simultaneous copy operation is initiated, and the file size has no influence (ie : one copy of a 2Gb file runs fine, a simultaneous copy of two 600Gb file goes to hell within minutes.
As a workaround, I wrote a couple of scripts to have a one file at a time copy process, but it's unsatisfactory.
Any hints greatly appreciated.
TIA
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File size has no influence - one copy of a 2 GB file runs fine, a simultaneous copy of 2 600GB file goes to hell within minutes.
Something seems wrong with that statement - as if you're comparing apples & oranges - if a simultaneous copy of 2 2GB files did the same thing as a simultaenous copy of 2 600GB files, then I could see that file size had no influence.
Anyway - I don't have too many "large files" around - well not 600GB large, so I used what I had and copied a couple of DVD ISO images around - and had no difficulties whatsoever - copy time did increase marginally - but at no time did I have a dropped connection and an invalid target message.
I didn't test with more than two systems and copying to or copying from made no appreciable difference - it's possible that your network infrastructure may be a contributing factor.
Last edited by fordem (2008-07-23 06:45:55)
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Are you using vista? My vista machine love throwing up that error when copying large files, or many files. I hit try again and off it goes. No problem from XP.
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I found that if I add then ip address of my DNS-323 to my 'C:\WINDOWS\system32\drivers\etc\hosts' File as in "192.168.1.254 {Name of DNS-323}" That problem went away for me.
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I'm not using Vista, only XP SP2 and Linux Ubuntu and Fedora.
What I've found if that thing go right from one machine, and wrong from all 5 others.
So it's not comming from the 323 ...
The machine from which thing go right has a Gb links to a switch where the DNS is plugged, while all 5 others are connected to a cascaded 100Mb switch.
Could it be the cascaded switches ?
If I attempt to copy between the Gb machine to a 100Mb machine thru shared directories, I have no trouble at all.
Tonight I'll replace the cable linking the Gb switch to the 100Mb switch. Apart from the switch itself that's the only SPOF I can think of.
Correct me if I'm wrong
TIA
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Theoretically - there's no reason why you can't pass the traffic through a "cascaded" switch, in fact, that is how I do it - my DNS-323 and an IBM xSeries server are connected to a Netgear GS108T switch (all jumbo frame enabled), which is then linked via gigabit to a Netgear FS728TS switch to which all other network devices are attached.
The tests I had done yesterday involved transfers between the DNS-323 and the IBM and a Dell running at 100 mbps - so the situations are fairly similar.
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I put a brand new cable, and the problem disappeared ... then I put the old cable back, and problem came back as well. Pretty strange that a cable can cause these effects, but it was the case.
Cheers
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Not really - in fact - a surprising number of cables that work well at 100 mbps, fail at gigabit speeds. If you look at my first response, you'll see I suggested your network infrastructure 'was a contributing factor".
Structured cabling is amongst the things I get involved in on a day to day basis, and I get to troubleshoot failed network installations done by other vendors - tell me about your cable - how long was it - and - perhaps the actual source of the problem - was it an off the shelf cable or did someone crimp the plugs on to it for you?
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If the cable was going between a 100M device and a 1000M device, you still need all 8 wires. Gbit uses all 4 pair, where 100M and 10M only use 2. I have seen may cheap cables missing the blue and brown pairs.
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