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QNAP TS-509 Pro Turbo NAS Review

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SiSoft Sandra is a diagnostic utility and synthetic benchmarking program. Sandra allows you to view your hardware at a higher level to be more helpful.








File System

Higher is Better


Looking at the theoretical throughput using the SiSoft Sandra File Systems test, we can see the TS-509 performs quite well across all configurations. The RAID 0 volume performed the best, as one might expect, reaching a rate of almost 51MB/s. The RAID 5 and RAID 6 volumes performance was more than respectable in the 46-47 MB/s range. Given how close these number are, I'd gladly trade a 5-7% performance hit for the added safety of RAID 5/6 over RAID 0 any day. Comparing the QNAP TS-509 to the Synology DS408, we see that only in a RAID 1 configuration does the lower-powered DS408 manage to hang with the TS-509. With its more powerful processor, greater memory and five-drive configuration (versus the fours drives in the DS408), the QNAP unit manages to outperform the DS408 by 23-28%. To see what advantage the extra spindle in each configuration gave the TS-509 versus the DS408, and to make the comparison more equal, I re-ran the tests using only four drives in the TS-509. The margin of advantage did narrow to about 20-23% in favor of the TS-509, except in the RAID 5 configuration, where the TS-509 actually performed better than when using five drives; here the advantage jumped to about 28% in favor of the TS-509.

Lower is Better

For the standard, or single-drive, test the TS-509 exhibited an anomalously high seek time which, even after running the tests a couple of times, I could not explain. For the other tests, access times for the TS-509 were generally better than the DS408, except in the RAID 0 configuration where the DS408 ground out a slight advantage.

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