# File System Types

SFS provides two types of file systems: SFS Capacity-Oriented and SFS Turbo. SFS Turbo is classified into SFS Turbo Standard and SFS Turbo Performance.

The following table describes the features, advantages, and application scenarios of these file system types.

Table 1 Comparison of file system types
File System Type | Storage Class | Feature | Advantage | Application Scenario
--- | --- | --- | --- | ---

SFS Capacity-Oriented

-

- Maximum bandwidth: 10 GB/s; maximum IOPS: 10,000
- With optimized features, it is suitable for services that require large capacity and high bandwidth.
- The maximum capacity can reach 2 PB, and the latency range is as follows:
  - For sequential large I/Os of large files, the latency ranges from 20 ms to 50 ms.
  - For sequential small I/Os of large files, the latency ranges from 10 ms to 20 ms.
  - For random small I/Os of large files, the latency ranges from 200 ms to 500 ms.

NOTE:

- The latency refers to the minimum latency when the workload is low. It is unstable.
- Large files refer to files larger than 10 MB, and large I/Os refer to I/Os larger than 1 MB.

Large capacity, high bandwidth, and low cost

Cost-sensitive services which require large-capacity scalability, such as media processing, file sharing, HPC, and data backup SFS Turbo file systems are recommended because SFS Capacity-Oriented file systems are not suitable for massive volume of small file services.

SFS Turbo

SFS Turbo Standard

- Maximum bandwidth: 120 MB/s; maximum IOPS: 3,000
- Latency: 10 to 20 ms; maximum capacity: 32 TB
- It is suitable for services with massive small files and services that require low latency.

Low latency and tenant exclusive

Services with massive small files, such as code storage, log storage, web services, and virtual desktop

SFS Turbo Standard - Enhanced

- Maximum bandwidth: 1 GB/s; maximum IOPS: 15,000
- Latency: 10 to 20 ms; maximum capacity: 320 TB
- Enhanced bandwidth, IOPS, and capacity

Low latency, high bandwidth, and tenant exclusive

Services with massive small files and services that require high-bandwidth, such as code storage, file sharing, enterprise office automation (OA), and log storage.

SFS Turbo Performance

- Maximum bandwidth: 320 MB/s; maximum IOPS: 20,000
- Latency: 6 to 10 ms; maximum capacity: 32 TB
- With optimized features, it is suitable for services with massive small files and services that require low latency and high IOPS.

Low latency, high IOPS, and tenant exclusive

Services with massive small files, random I/O-intensive and latency-sensitive services, such as high-performance websites, file sharing, and content management

SFS Turbo Performance - Enhanced

- Maximum bandwidth: 2 GB/s; maximum IOPS: 100,000
- Latency: 6 to 10 ms; maximum capacity: 320 TB
- Enhanced bandwidth, IOPS, and capacity

Low latency, high IOPS, high bandwidth, and tenant exclusive

Services with massive small files, latency-sensitive services that require high bandwidth, such as image rendering, AI training, and enterprise OA.

Parent topic: Introduction