Synology SNV3400-400G 400GB SSD Review

1. Introduction2. Synology SNV3400-400G3. Testing Methodology4. CrystalDiskMark5. ATTO Disk Benchmark6. AS SSD7. IOMETER8. 128KB Sequential Performance9. 4K Random Read v QD Performance10. 4K Random Write v QD Performance11. 4K 70/30 Mixed Performance12. Throughput13. PCMark 10 Full System Drive 14. Performance Stability15. Real Life File Testing16. Closing Thoughts17. View All Pages

CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s. We are using versions 6.0 and 7.0.

Synology's SNV3400-400G's performance in CrystalDiskMark’s deeper queue depth 4K test leaves it the bottom half of the results chart. From looking at the two benchmark result screens, it seems that the controller has a preference for handling compressible data. Using this type of data sees a big boost in the random read performance at queue depths 1 (1 thread) and 32 (8 threads).

In the QD1 test, the read performance of the drive leaves it at the bottom of the result charts. However, its write performance at this queue depth is much better than its read.

 

 

 

The latest version of CrystalDiskMark, version 7, includes a couple of profiles that can be used for testing – Peak Performance and Real World. The result screens for these two profiles not only display MB/s results but also IOPS and latency.

Looking at the Peak Performance results for Sequential read/write performance we could confirm the official 3,100MB/s and 550MB/s respectively. When tested using the default test, the drive produced a read figure of 3,413MB/s with writes at 609MB/s, both bettering the official ratings.

When it comes to random performance the SNV3400-400G is rated as up to 205,000 IOPS for reads and up to 40,000 IOPS for writes (at QD256). The CrystalDiskMark test runs at a shallower QD and the best read figure we saw was 285,578 IOPS when using compressible data while the best write figure of 143,086 IOPS came when testing at the benchmarks default settings.

We also used CrystalDiskMark 7 to test the drive at lower queue depths (where most of the everyday workloads occur) using 1 to 4 threads. The random read performance climbs smoothly through each of the tested queue depths apart from the 4-threaded test when the performance dips a little at QD2 before recovering and carrying on climbing through the remaining queue depths.

In the write tests, after initial climbs, though queue depths 1 and 2, the drive displays very consistent performance through queue depths 4 and 8.

Become a Patron!