The Underlying Storage System

The performance characteristics of the underlying storage system are the most critical factors for file system performance. Depending on an environment’s use cases, differing performance characteristics may be more important. For very large, sequential, file access, storage throughput will be an important factor. For smaller file access, or random file access, storage access time and I/O latency will be an important factor.

Metadata access is small, random I/O, with most I/O 4KB in size. As such, storage access time and I/O latency are the key factors when tuning for StorNext file operation performance.

Solid state drive, or SSD, has shown advantages when optimizing storage for metadata performance due to its very low I/O latency and high rate of operations per second. Choosing solid state drive within RAID storage provides a good mix of resiliency and small, random I/O performance.

Typically, RAID storage systems provide many tuning options for cache settings, RAID level, segment size, stripe size, and so on.