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Cannot Copy Files Larger Than 2 GByte to ReadyNAS
I'm running the latest ReadyNAS 6.9.4hotfix1 on my ReadyNAS with more than 3.5 TByte free and a Windows 10 Pro x64 workstation and have for many years (with whatever the latest official version was a...
That sounds weird, CarlEdman. What happens in case you use the admin page in a browser on your windows workstation to pull (upload) one of the concerned files to the nas?
Kind regards
Thanks for the suggestion, Retired_Member! I didn't even know you could do that.
The result: It actually worked (albeit at a much lower transfer rate of about 22 MByte/sec), solving my immediate problem.
But I still wonder why the underlying issue occurs.
I would also like to know, CarlEdman, but could only guess.
If you do not need IPv6 and have it enabled in the network configuration of the nas, please disable it there and give it another try.
Kind regards
Are you certain this is a file size limit? Perhaps try using NasTester ( http://www.808.dk/?code-csharp-nas-performance ) to isolate the problem.
For instance you could set up a 400 MB transfer test running 20 times (8 GB total) and see if that fails. Then adjust the file size upwards the the loop count downwards (800 MB x 10, 1000 MB*8, 2000 MB*4, 4000 MB *2, ...), until you find the failure point.
FWIW, I don't see how this would be related to ipv6, though I agree that you should disable ipv6 if you don't need it (and most people don't).
StephenB wrote: "FWIW, I don't see how this would be related to ipv6, though I agree that you should disable ipv6 if you don't need it (and most people don't)."
You are most probably right, but my recommendation belongs to the category "Do not enable anything you do not truely need". As I think the issue is network related, disabling IPv6 will reduce the complexity of the network configuration. Even, if it might not be the solution, it might bring us closer to a situation, where we finally can identify the reason(s) for the issue.
Thanks for all the advice from Retired_Member and StephenB. To take the points in order:
1. The problem just disappeared as mysteriously as it appeared. Copying the same file 3.4 GByte from the same local directory to the same NAS directory suddenly worked as expected. No config changes, no reboots on either client or server. I have no idea why, but please believe me that I'm not the sort of ninny who runs to the forum without reproducing the issue at least half a dozen times, both from Windows explorer and cmd.exe.
2. I'd never tried NAS tester before, but I did as suggested and am quite pleased with the results: Pretty rock solid ~114 MByte/second real throughput read and write, close enough to the theoretical Gigabit Ethernet limit as to satisfy me. Details attached below.
3. I don't recall deliberately enabling IPv6 on my ReadyNAS, but if I read the configuration correctly, it is set to "Automatically/DHCP." Not that it matters as I don't expose the NAS to the outside world and there are only 100 to 200 devices on my home network (wired and wireless combined).
NAS performance tester 1.7 http://www.808.dk/?nastester Running warmup... Running a 400MB file write on Z: 20 times... Iteration 1: 116.04 MB/sec Iteration 2: 101.37 MB/sec Iteration 3: 115.62 MB/sec Iteration 4: 116.38 MB/sec Iteration 5: 114.25 MB/sec Iteration 6: 115.97 MB/sec Iteration 7: 116.01 MB/sec Iteration 8: 115.21 MB/sec Iteration 9: 113.94 MB/sec Iteration 10: 116.06 MB/sec Iteration 11: 115.77 MB/sec Iteration 12: 114.25 MB/sec Iteration 13: 114.84 MB/sec Iteration 14: 116.01 MB/sec Iteration 15: 115.74 MB/sec Iteration 16: 116.08 MB/sec Iteration 17: 115.63 MB/sec Iteration 18: 116.18 MB/sec Iteration 19: 115.24 MB/sec Iteration 20: 115.91 MB/sec ----------------------------- Average (W): 114.82 MB/sec ----------------------------- Running a 400MB file read on Z: 20 times... Iteration 1: 109.23 MB/sec Iteration 2: 108.23 MB/sec Iteration 3: 109.35 MB/sec Iteration 4: 109.49 MB/sec Iteration 5: 109.05 MB/sec Iteration 6: 109.50 MB/sec Iteration 7: 109.41 MB/sec Iteration 8: 109.95 MB/sec Iteration 9: 110.74 MB/sec Iteration 10: 110.26 MB/sec Iteration 11: 110.41 MB/sec Iteration 12: 110.62 MB/sec Iteration 13: 110.50 MB/sec Iteration 14: 110.84 MB/sec Iteration 15: 110.56 MB/sec Iteration 16: 110.96 MB/sec Iteration 17: 109.50 MB/sec Iteration 18: 109.89 MB/sec Iteration 19: 110.29 MB/sec Iteration 20: 109.71 MB/sec ----------------------------- Average (R): 109.92 MB/sec ----------------------------- Running warmup... Running a 2000MB file write on Z: 4 times... Iteration 1: 116.17 MB/sec Iteration 2: 114.51 MB/sec Iteration 3: 116.33 MB/sec Iteration 4: 115.25 MB/sec ----------------------------- Average (W): 115.56 MB/sec ----------------------------- Running a 2000MB file read on Z: 4 times... Iteration 1: 115.61 MB/sec Iteration 2: 113.90 MB/sec Iteration 3: 115.56 MB/sec Iteration 4: 113.90 MB/sec ----------------------------- Average (R): 114.74 MB/sec ----------------------------- Running warmup... Running a 4000MB file write on Z: twice... Iteration 1: 111.69 MB/sec Iteration 2: 110.26 MB/sec ----------------------------- Average (W): 110.98 MB/sec ----------------------------- Running a 4000MB file read on Z: twice... Iteration 1: 114.87 MB/sec Iteration 2: 113.30 MB/sec ----------------------------- Average (R): 114.09 MB/sec -----------------------------
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