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Qsan XN3004T 4+1 Bay NAS Review (Page 4)

By Tyler Bernath from Jul 31, 2019 @ 22:00 CDT
TweakTown Rating: 86%Manufacturer: Qsan

Single Client Throughput

  • HD Video Play - 720p HD stream from Windows Media Player, 256kB reads
  • HD Video Record - 720p HD stream, 256kB writes
  • File Copy from NAS - 4GB file copy, 64kB reads
  • File Copy to NAS - 64kB writes

In testing the Qsan, I decided to test with SSD cache as well. I ran each test three times to give the NAS a chance to cache data and recorded the results. I started with NASPT or single client testing, this gave us a blue bar for standard testing and green for SSD.

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Starting off with RAID 0 testing, we show our baseline numbers at 112 MB/s for playback and 116 MB/s for record. File copy to and from reach 104MB/s and 90 MB/s respectively. Adding the SSD cache, we see a 3MB/s improvement on playback, 6MB/s on File Copy to and 25MB/s with File Copy from.

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RAID 5 was rather interesting showing much higher performance without the cache, though it should be noted OSM was showing a low hit rate for this data set.

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RAID 6 showed a much better result with cache; 16MB/s in Video Record, 15 MB/s in File Copy to and 12 MB/s with Directory Copy.

Benchmarks - Sequential Read and Write

Our Sequential read/write workload is centered on 128K transfer sizes at QD32.

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RAID 0 sequential read showed no real benefit from the SSD cache; both reaching 115 - 120 MB/s across the board.

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Once again, sequential performance goes down with cache and RAID 5; a 20 MB/s difference between the two.

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RAID 6 showed similar results to RAID 5; likely, three passes isn't enough to warm the cache.

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Moving into write performance, our 16TB Ironwolf Pro and SSD cache was held back by the Gigabit network connection.

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Back over to RAID 5, we see more consistency out of write operations both the standard and SSD cache testing peaking at 118 MB/s

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RAID 6 shows a slight performance advantage for the standard drive setup, no-cache.

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