CFS provides the following two types of file systems. The following table describes the characteristics, strengths, and use cases of each type of file system.
| File System Type | Characteristic | Strength | Use Case |
|---|---|---|---|
Standard |
- The storage space scales out elastically according to the amount of data written, up to 160 TiB. - The throughput scales out linearly according to the file system capacity, up to 300 MB/s. - The maximum IOPS is 4,000 (4 KB file size for random read/write). |
- Low cost - Large capacity |
Cost-effective, suitable for most file sharing scenarios, such as data backup, office OA, log storage, and small file sharing. |
High-performance |
- The storage space scales out elastically according to the amount of data written, up to 160 TiB. - The throughput scales out linearly according to the file system capacity, up to 500 MB/s. - The maximum IOPS is 26,000 (4 KB file size for random read/write). |
- High throughput - Low latency |
More suitable for medium to large workloads and low latency scenarios. |
Note:
The file system type is changed from "Extreme" to "High-Performance". Only the name is changed, and features are not affected.
Performance Formulas
The throughput of standard and high-performance single file systems follows the definition of performance specifications. The specifications include storage capacity, which can be calculated based on either allocated capacity or used capacity. Additionally, the step size for the performance calculation formula can be customized.
| File System Type | Performance Formula |
|---|---|
| Standard | Throughput (MB/s) = Storage volume (GiB) x Custom step size of throughput + Custom lower specification limit |
| High-Performance | Throughput (MB/s) = Storage volume (GiB) x Custom step size of throughput + Custom lower specification limit |
Note:
The above performance is the capability provided by the file system. To reach the performance limit of the file system, perform multi-threaded, high-load read-write operations on multiple compute nodes.