Home > Storage > PowerScale (Isilon) > Product Documentation > Storage (general) > PowerScale OneFS SmartFlash > Benefits of using SSDs for L3 cache
There are several benefits to using SSDs for caching rather than as traditional file system storage devices. For example, when reserved for caching, the entire SSD is used, and writes occur in a linear and predictable way. This approach provides far better utilization and also results in considerably reduced wear and increased durability over regular file system usage, particularly with random write workloads. Using SSD for cache also makes sizing SSD capacity a more straightforward and less error-prone prospect. It requires considerably less management overhead as compared with configuring certain portions of a dataset to use SSDs as a storage tier within the file system.