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Storage Class and Performance Specification

Last updated: 2020-08-10 11:22:07

CFS offers two types of file systems: standard and high-performance. Below are their features, benefits, and use cases.

File System Type	Features	Benefits	Use Cases
Standard	Elastic scaling of storage capacity based on the number of writes, up to 160 TB Linear scaling of throughput based on file system capacity, up to 300 MB/s Up to 4K IOPS (4 KB random read/write)	Low costs High volume	The most common file sharing scenarios that require high cost efficiency, such as data backup, OA, log storage, and small file sharing
High-performance	Elastic scaling of storage capacity based on the number of writes, up to 2 PB Linear scaling of throughput based on file system capacity, up to 40 GB/s Up to 60K IOPS (4 KB random read/write)	High throughput High IOPS	High-through, compute-intensive workloads mainly involving large files, such as high-performance computing, media asset rendering, and machine learning

Performance Formula

The relationship between the throughput of a single standard or high-performance file system and the amount of write storage is as follows:

File System Type	Performance Formula
Standard	Throughput (MB/s) = storage usage (GB) * 0.1 + 100
High-performance	Throughput (MB/s) = storage usage (GB) * 0.2 + 200

Note：
The above formulas show the capabilities a file system can provide. To reach the upper performance limit, you usually need to perform multi-threaded reads/writes by using multiple computing nodes.