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Forum Discussion
Solved
Corruption when reading large files from an RN31400 over SMB
When I copy a large file (example: Ubuntu 24.04.3 ISO, 6.3 GB) from my RN31400 NAS to my local drive on a Windows 10 machine using SMB, the file will almost always contain at least one error (as dete...
Short answer: I fixed the problem by moving the hard drives from the RN31400 to an RN42400.
The corruption was not an NFS vs. SMB problem. Judging from the NAS activity light, it looks like the data was corrupted less frequently on NFS because the reads were often being read from an NFS cache.
I ran a disk test and a scrub on the NAS. No errors were found. I replaced the Ethernet switch and cables, but there was still data corruption. Finally, I moved the hard drives from the RN31400 to my RN42400, and there was no more data corruption.
I ran a memory test on the RN31400, and there was an average of about three errors per pass. I suspect that a large file, such as the Ubuntu ISO, filled more of the NAS's buffer, resulting in an increased probability (versus small files) of being stored in bad memory.
Short answer: I fixed the problem by moving the hard drives from the RN31400 to an RN42400.
The corruption was not an NFS vs. SMB problem. Judging from the NAS activity light, it looks like the data was corrupted less frequently on NFS because the reads were often being read from an NFS cache.
I ran a disk test and a scrub on the NAS. No errors were found. I replaced the Ethernet switch and cables, but there was still data corruption. Finally, I moved the hard drives from the RN31400 to my RN42400, and there was no more data corruption.
I ran a memory test on the RN31400, and there was an average of about three errors per pass. I suspect that a large file, such as the Ubuntu ISO, filled more of the NAS's buffer, resulting in an increased probability (versus small files) of being stored in bad memory.
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