Alibaba Cloud Network Attached Storage (NAS) provides file storage services for compute nodes, such as ECS instances, Elastic High Performance Computing (E-HPC) clusters, and Container Service clusters.


NAS is a distributed file system that provides shared access, scalability, high availability, and high performance. Dependent on POXIS-based file APIs, NAS provides several benefits, such as compatibility with operating systems, shared access, data consistency, and exclusive locks.

NAS provides easy-to-use and scalable file storage that can work with ECS. A NAS file system can provide simultaneous access to multiple ECS instances. The storage capacity of a file system scales up or down with the number of files. NAS provides a common data source for multiple instances or running applications.

NAS provides multiple storage types, such as NAS Capacity, NAS Performance, and NAS Extreme. For more information, see Storage types.

NAS provides a wide variety of scenarios. For more information, see Scenarios.


NAS provides a number of benefits, such as being high-performance, cost-effective, secure, reliable, and easy-to-use.

  • Costs
    • A NAS file system can be mounted on multiple compute nodes at the same time while still allowing access to these nodes. This reduces a large number of data copies and synchronization costs.
    • The performance of a NAS file system increases with expanding storage capacity. Without the need for further investment in high-end file storage devices, you can reduce a large number of hardware costs.
    • With NAS, you only pay for the size of storage space that you use. In addition, no minimum consumption or extra configuration costs exist. For more information, see Billing method.
    • With high reliability, NAS reduces data security risks and maintenance costs.
  • Easy-to-use

    You can easily create file systems without the extra need to deploy and maintain these file systems.

  • Security

    RAM-based access control VPC networks are used to isolate user access, and encrypt data both in transit and at rest to prevent the interception and tampering of critical data.

  • High reliability

    With data reliability of 99.999999999%, NAS reduces a large number of data security risks.

  • High performance

    NAS is a distributed file system that provides linear performance with increasing capacity and ultra-high performance over traditional data stores.

  • Compatibility
    • NAS is compatible with multiple standard protocols, such as NFS and SMB. Compatible with POSIX-based file APIs, NAS provides data consistency and exclusive locks.
    • You can view the result in real time after the content of a file stored in a NAS file system is changed.


NAS provides the following features:
Scenarios Features Reference
Create file systems Before using NAS, you must create a file system. Create a file system
Manage file systems You can view the details of a file system or delete a file system. Manage file systems
Add mount points You must add a mount point to a file system before mounting the file system. Add a mount point
Manage mount points You can disable, enable, or delete a mount point, or modify the permission group of a mount point. Manage mount points
Mount file systems You must mount a file system on a computational node before using the file system. Mount a file system
Manage user access You can authorize a RAM user to operate NAS or control user access by using permission groups. Manage the resource access permissions of file systems

Manage the data access permissions of file systems

Use NAS APIs NAS provides various API interfaces that allow you to perform various operations on a file system. API overview

Billing methods

For more information about NAS billing methods, see NAS pricing.