When reading and writing randomly-selected 4 KB blocks, the results look like this. Adding more SSDs increases the data throughput and I/O operations per second. As noted earlier, the performance scaling is almost linear. Only at a queue depth of one does the number of added drives becomes unimportant.
Summary
- SSD Performance On Demand: RAID Scaling Analysis
- I/O Performance In Abundance
- SATA Bottleneck: 3 Gb/s Is Not Enough
- Five SSDs In RAID 0
- Test Setup
- Benchmark Results: I/O Performance
- Benchmark Results: Iometer Streaming
- Benchmark Results: 4 KB Random Reads/Writes
- Benchmark Results: PCMark Vantage
- Conclusion: Capacity And Performance Scale Together
