General-purpose NAS file systems are used to store hot data that is frequently accessed. General-purpose NAS file systems are classified into Performance NAS file systems and Capacity NAS file systems. This topic compares the performance metrics, supported protocols, advanced features, and scenarios of Capacity NAS file systems and Performance NAS file systems. You can select the type of General-purpose NAS file systems based on your business requirements. If your applications are sensitive to latency, we recommend that you use Extreme NAS file systems.

Item Capacity NAS file system Performance NAS file system
Peak bandwidth The minimum read bandwidth is 150 MB/s. The bandwidth increases by 0.15 MB/s per GiB. The maximum bandwidth is 10 GB/s. The minimum read bandwidth is 600 MB/s. The bandwidth increases by 0.6 MB/s per GiB. The maximum bandwidth is 20 GB/s.
IOPS The maximum IOPS is 15,000. For more information, see What is IOPS? The maximum IOPS is 30,000. For more information, see What is IOPS?
Average latency for reading 4 KiB files 10 ms 2 ms
Capacity 0~10 PiB 0~1 PiB
Scaling step size 4 KiB 4 KiB
Scaling method Auto scaling Auto scaling
Protocol type
  • NFS v3
  • NFS v4.0
  • SMB
  • NFS v3
  • NFS v4.0
  • SMB
Advanced features
Scenarios General file sharing workloads that require high capacity, high cost effectiveness, elastic scalability, and Infrequent Access (IA) storage media. The workloads include Linux or Windows applications for enterprises, web content management services, database backup services, log storage services, and home directory services.