File System Types

SFS provides three types of file systems: SFS Capacity-Oriented, General Purpose File System, and SFS Turbo.

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

**Table 1** File system types
File System Type	Storage Class	Features	Highlights	Application Scenarios
SFS Capacity-Oriented	-	Maximum bandwidth: 2 GB/s; maximum IOPS: 2,000 Latency: 3 to 20 ms; maximum capacity: 4 PB Delivers better performance and suitable for services that require large capacity and high bandwidth. NOTE: Latency refers to the minimum latency under low workload conditions. It is unstable. Large files refer to files larger than 10 MB, and large I/Os refer to I/Os larger than 1 MB. The performance of a file system is related to its capacity. The bandwidth is calculated using the following formula: Bandwidth of a file system = 0.02 MB/s x Capacity of the file system (GB) + 100 MB/s. The maximum bandwidth of a file system with 100 TB capacity is 2 GB/s. If a higher bandwidth is required, purchase a file system with larger capacity.	Large capacity, high bandwidth, and low cost	Cost-sensitive workloads which require large-capacity scalability, such as media processing, file sharing, high-performance computing, and data backup. For workloads dealing with massive small files, SFS Turbo is recommended.
General Purpose File System	-	Maximum bandwidth: 1.25 GB/s; maximum IOPS: million Latency: about 10 ms; maximum capacity: EB Delivers better performance and suitable for services that require large capacity and high bandwidth.	Large capacity, high bandwidth, and low cost	Cost-sensitive workloads which require large-capacity scalability, such as media processing, file sharing, high-performance computing, and data backup. For workloads dealing with massive small files, SFS Turbo is recommended.
SFS Turbo	Standard	Maximum bandwidth: 150 MB/s; maximum IOPS: 5,000 Latency: 2 to 5 ms; maximum capacity: 32 TB Suitable for services with massive small files and services that require low latency. NOTE: The performance of an SFS Turbo file system depends on the storage class. It is not affected by the file system capacity.	Low latency and tenant exclusive	Workloads dealing with massive small files, such as code storage, log storage, web services, and virtual desktop
	Standard-Enhanced	Maximum bandwidth: 1 GB/s; maximum IOPS: 15,000 Latency: 2 to 5 ms; maximum capacity: 320 TB Enhanced bandwidth, IOPS, and capacity	Low latency, high bandwidth, and tenant exclusive	Workloads dealing with massive small files and those requiring high bandwidth, such as code storage, file sharing, enterprise office automation (OA), and log storage.
	Performance	Maximum bandwidth: 350 MB/s; maximum IOPS: 20,000 Latency: 1 to 3 ms; maximum capacity: 32 TB Delivers better performance and suitable for services with massive small files and services that require low latency.	Low latency, high IOPS, and tenant exclusive	Workloads dealing with massive small files, and random I/O-intensive and latency-sensitive services, such as high-performance websites, file sharing, and content management
	Performance-Enhanced	Maximum bandwidth: 2 GB/s; maximum IOPS: 100,000 Latency: 1 to 3 ms; maximum capacity: 320 TB Enhanced bandwidth, IOPS, and capacity	Low latency, high IOPS, high bandwidth, and tenant exclusive	Workloads dealing with massive small files, and latency-sensitive and bandwidth-demanding workloads, such as image rendering, AI training, and enterprise OA.
	20 MB/s/TiB	Maximum bandwidth: 8 GB/s; maximum IOPS: 250,000 Latency: 2 to 5 ms; capacity: 3.6 TB to 1 PB	Large capacity and low cost	Enterprise OA and code repository management
	40 MB/s/TiB	Maximum bandwidth: 8 GB/s; maximum IOPS: 250,000 Latency: 2 to 5 ms; capacity: 1.2 TB to 1 PB	Large capacity and low cost	Enterprise OA and code repository management
	125 MB/s/TiB	Maximum bandwidth: 20 GB/s; maximum IOPS: 1 million Latency: 1 to 3 ms; capacity: 1.2 TB to 1 PB	Low latency and cost effectiveness	AI training, EDA simulation, gene analysis, and video rendering
	250 MB/s/TiB	Maximum bandwidth: 20 GB/s; maximum IOPS: 1 million Latency: 1 to 3 ms; capacity: 1.2 TB to 1 PB	Low latency and high bandwidth	AI training, EDA simulation, gene analysis, and video rendering
	500 MB/s/TiB	Maximum bandwidth: 80 GB/s; maximum IOPS: 1 million Latency: 1 to 3 ms; capacity: 1.2 TB to 1 PB	Low latency and high-density performance	Autonomous driving, AI generated content, and EDA in chip design
	1,000 MB/s/TiB	Maximum bandwidth: 80 GB/s; maximum IOPS: 1 million Latency: 1 to 3 ms; capacity: 1.2 TB to 1 PB	Low latency and high-density performance	Autonomous driving, AI generated content, and EDA in chip design