Help Center/ Scalable File Service Turbo/ Service Overview/ SFS Turbo File System Types
Updated on 2026-03-02 GMT+08:00
View PDF

SFS Turbo File System Types

This section describes the features, highlights, and application scenarios of different types of SFS Turbo file systems.

Table 1 SFS Turbo file systems

Parameter

20 MB/s/TiB

40 MB/s/TiB

125 MB/s/TiB

250 MB/s/TiB

500 MB/s/TiB

1,000 MB/s/TiB

Max. bandwidth

Min. [20 × Storage capacity (TiB), 8,000] MB/s

Min. [40 × Storage capacity (TiB), 8,000] MB/s

Min. [125 × Storage capacity (TiB), 20,000] MB/s

Min. [250 × Storage capacity (TiB), 20,000] MB/s

Min. [500 × Storage capacity (TiB), 80,000] MB/s

Min. [1,000 × Storage capacity (TiB), 80,000] MB/s

Max. IOPS

250,000

250,000

1 million

1 million

1 million

1 million

Single-queue, 4 KiB latency

2–5 ms

2–5 ms

1–3 ms

1–3 ms

1–3 ms

1–3 ms

Capacity

3.6 TB to 1 PB

1.2 TB to 1 PB

1.2 TB to 1 PB

1.2 TB to 1 PB

1.2 TB to 1 PB

1.2 TB to 1 PB

Medium Type

HDD

HDD

SSD

SSD

ESSD

ESSD

Highlights

Large capacity and low cost

Large capacity and low cost

Low latency and cost effectiveness

Low latency and cost effectiveness

High IOPS and high-density performance

High IOPS and high-density performance

Typical use cases

Log storage, file sharing, content management, and websites

Log storage, file sharing, content management, and websites

AI training, autonomous driving, EDA simulation, rendering, enterprise NAS, and HPC web applications

AI training, autonomous driving, EDA simulation, rendering, enterprise NAS, and HPC web applications

Large-scale AI training, AI models, and AI generated content

Large-scale AI training, AI models, and AI generated content
Table 2 Previous-generation SFS Turbo file systems

Parameter

Standard

Standard-Enhanced (Discontinued)

Performance

Performance-Enhanced (Discontinued)

Max. bandwidth

150 MB/s

1 GB/s

350 MB/s

2 GB/s

Max. IOPS

5,000

15,000

20,000

100,000

Single-queue, 4 KiB latency

2–5 ms

2–5 ms

1–3 ms

1–3 ms

Capacity

500 GB to 32 TB

10 TB to 320 TB

500 GB to 32 TB

10 TB to 320 TB

Medium Type

HDD

HDD

SSD

SSD

Highlights

Large capacity and low cost

Low latency and high IOPS

Typical use cases

Code storage, log storage, file sharing, and enterprise OA

High-performance website, file sharing, content management, image rendering, AI training, and enterprise OA
  • For SFS Turbo Standard, Standard-Enhanced, Performance, and Performance-Enhanced file systems, performance is determined by the file system type and remains unaffected by the purchased capacity.
  • For SFS Turbo 20 MB/s/TiB, 40 MB/s/TiB, 125 MB/s/TiB, 250 MB/s/TiB, 500 MB/s/TiB, and 1,000 MB/s/TiB file systems, performance scales with the purchased capacity. As the purchased capacity increases, the available bandwidth also increases. Based on the bandwidth provided by each 1 TiB of capacity, SFS Turbo file systems are classified into the following types: 20 MB/s/TiB, 40 MB/s/TiB, 125 MB/s/TiB, 250 MB/s/TiB, 500 MB/s/TiB, and 1,000 MB/s/TiB.

    For example, if you buy a 250 MB/s/TiB file system with a capacity of 6 TiB, the bandwidth that this file system can provide is 1,500 MB/s (250 × 6).

    The minimum bandwidth of an SFS Turbo file system is 150 MB/s. If the calculated bandwidth is less than 150 MB/s, 150 MB/s will be the bandwidth of this file system. There will also be a maximum bandwidth for each type of SFS Turbo file system. If the calculated bandwidth is greater than the maximum bandwidth, the maximum bandwidth will be the bandwidth of this file system.

  • In the table, the maximum IOPS and maximum bandwidth all include both the read and write operations. So, maximum IOPS = read IOPS + write IOPS.
  • The minimum expansion increment of an SFS Turbo Standard-Enhanced (discontinued), Standard, Performance-Enhanced (discontinued), or Performance file system is 100 GB. The minimum expansion increment of a 20 MB/s/TiB, 40 MB/s/TiB, 125 MB/s/TiB, 250 MB/s/TiB, 500 MB/s/TiB, or 1,000 MB/s/TiB file system is 1.2 TB, and the new capacity must be an integer multiple of 1.2 TB.