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File System Types

SFS provides two types of file systems: SFS Capacity-Oriented and SFS Turbo.

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	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.	Large capacity, high bandwidth, and low cost	Cost-sensitive workloads which require large-capacity scalability, such as media processing, file sharing, HPC, 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.	Low latency and tenant exclusive	Code storage, file sharing, enterprise OA, and log storage
	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	Code storage, file sharing, enterprise 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	HPC websites, file sharing, content management, image rendering, AI training, and enterprise OA
	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	HPC websites, file sharing, content management, 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	Log storage, file sharing, content management, and websites
	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	Log storage, file sharing, content management, and websites
	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, autonomous driving, EDA simulation, rendering, enterprise NAS, and HPC web applications
	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, autonomous driving, EDA simulation, rendering, enterprise NAS, and HPC web applications

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