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Forum Discussion
NV+ slows after 15-20 minutes [SOLVED]
I am experiencing some performance issues with my NV+ It is used for storing drive images created using the Acronis Drive Image 2010 CD. Backups work fine, the issue arises when I come to do a rest...
I have been reading the Acronis forums as well, I agree that the poor media quality problem does arise with TIB. My understanding is that is often in relation to dvd backups. I have seen other Readynas users with the same issue, and like me they don't think there is any issue with the quality of the media, given that it is coming from a RAID array.
I have previously transferred the .tib file to USB or hard drive and restored partitions from that media without issue. I also used to be able to restore partitions from the NV+ without issue and using the same live CD so therefore it isn't possible that there is any change in the software environment being used for the restore. That tells me (I think) that the backup file is fine, it's just getting the data from the file to the Acronis live CD that I use to resore partitions. It was a development of that though process that led me to dig out the Synology NAS and try that out. The test was using the same network connections, same restore methodology, same .tib file, just from a different source (with the copy file being made from the NV+ original)
I have been running the tests with NAS performance tester, results as follows
Synology DS101g......400mb file......Write speed 12.24 MB/s.........Read speed..........17.95 MB/s
Synology DS101g......8000mb file.....Write speed 12.35 MB/s.........Read speed..........17.99 MB/s
Readynas NV+.........400mb file......Write speed 13.29 MB/s.........Read speed..........34.95 MB/s
Readynas NV+.........8000mb file.....Write speed 14.22 MB/s.........Read speed..........33.05 MB/s
When I was running the tests on the NV+ I also monitored memory usage. Cached memory was around 8% when idle, when the test file was being generated on the NV+ it rose to ~51%, and when the write test was being performed it rose to 88% meaning all available memory was being used (I think)
At the end of the final test there were three temporary swap partitions created, each of 249.88MiB, but with only 112kiB remaining used in each partition:
/dev/hdc2
/dev/hdg2
/dev/hdi2
I haven't tried updating the firmware yet, before I do any further thoughts or suggestions ?
I have previously transferred the .tib file to USB or hard drive and restored partitions from that media without issue. I also used to be able to restore partitions from the NV+ without issue and using the same live CD so therefore it isn't possible that there is any change in the software environment being used for the restore. That tells me (I think) that the backup file is fine, it's just getting the data from the file to the Acronis live CD that I use to resore partitions. It was a development of that though process that led me to dig out the Synology NAS and try that out. The test was using the same network connections, same restore methodology, same .tib file, just from a different source (with the copy file being made from the NV+ original)
I have been running the tests with NAS performance tester, results as follows
Synology DS101g......400mb file......Write speed 12.24 MB/s.........Read speed..........17.95 MB/s
Synology DS101g......8000mb file.....Write speed 12.35 MB/s.........Read speed..........17.99 MB/s
Readynas NV+.........400mb file......Write speed 13.29 MB/s.........Read speed..........34.95 MB/s
Readynas NV+.........8000mb file.....Write speed 14.22 MB/s.........Read speed..........33.05 MB/s
When I was running the tests on the NV+ I also monitored memory usage. Cached memory was around 8% when idle, when the test file was being generated on the NV+ it rose to ~51%, and when the write test was being performed it rose to 88% meaning all available memory was being used (I think)
At the end of the final test there were three temporary swap partitions created, each of 249.88MiB, but with only 112kiB remaining used in each partition:
/dev/hdc2
/dev/hdg2
/dev/hdi2
I haven't tried updating the firmware yet, before I do any further thoughts or suggestions ?
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