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File Storage NAS:API overview

Last Updated:Jun 30, 2026

API standards and multilingual preset SDKs

The OpenAPI of this product (NAS/2017-06-26) uses the RPC signature style. We have encapsulated SDKs for common programming languages for developers. Developers can download the SDK to directly call this product's OpenAPI without worrying about technical details. If the existing SDK does not meet your needs, you can use the signature mechanism for self-signing integration. Since the details of self-signing are very complex, it may take around 5 business days. Therefore, we recommend joining our DingTalk service group (147535001692) and conducting signature integration under expert guidance.

Before using the API, you need to prepare your identity account and access key (AccessKey) to effectively access the API through client tools (such as SDK and CLI). For details, see Obtain an AccessKey.

Custom signature scenarios

If your business scenario has special requirements and you need to integrate the API through self-signing, we recommend consulting our technical support team first (DingTalk service group: 147535001692) to obtain professional guidance and ensure efficient integration.

Account and security preparation

Alibaba Cloud accounts have full administrative permissions over all resources. Once an AccessKey is compromised, all associated resources will be at risk of unauthorized access. To ensure security, it is recommended to create a RAM user with only API access permissions and configure its AccessKey, while configuring RAM policies based on the principle of least privilege (PoLP). Use the Alibaba Cloud account only in specific scenarios where Alibaba Cloud account permissions are explicitly required.

Service operations

API

Title

Description

OpenNASService OpenNASService Activates the NAS service.

Regions

API

Title

Description

DescribeZones DescribeZones Queries all zones in a region and the file system types that are supported in each zone.
DescribeRegions DescribeRegions Queries the regions in which File Storage NAS is available.

File systems

API

Title

Description

CreateFileSystem CreateFileSystem Creates a file system.
DeleteFileSystem DeleteFileSystem Deletes a file system.
ModifyFileSystem ModifyFileSystem Modifies the description of a file system.
DescribeFileSystems Query file system information Queries file system information.
UpgradeFileSystem UpgradeFileSystem Scales up an Extreme NAS file system or a Cloud Parallel File Storage (CPFS) file system.
DescribeFilesystemsAssociatedHpnZones DescribeFilesystemsAssociatedHpnZones Retrieves the list of HpnZones for a file system. Access performance is optimal when compute nodes are located in one of the associated HpnZones.

Mount targets

API

Title

Description

CreateMountTarget Create a mount target Creates a mount target.
DeleteMountTarget DeleteMountTarget Deletes a mount target.
ModifyMountTarget ModifyMountTarget Modifies the properties of a mount target.
DescribeMountTargets DescribeMountTargets Retrieves information about mount targets.
DescribeMountedClients DescribeMountedClients Queries the clients on which a file system is mounted.

Access points

API

Title

Description

CreateAccessPoint Create an access point Creates an access point.
DescribeAccessPoints Query access point information Queries access point information.
DescribeAccessPoint Query access point details Queries the details of an access point.

Permission groups

API

Title

Description

CreateAccessGroup Create a permission group Creates a permission group.
DeleteAccessGroup Delete access group Delete an existing access group.
ModifyAccessGroup ModifyAccessGroup Modifies a permission group.
DescribeAccessGroups Query permission group information Queries permission group information.
CreateAccessRule Create a permission rule Creates a permission rule for a permission group.
DeleteAccessRule Delete a permission rule Deletes a permission rule from a permission group.
ModifyAccessRule ModifyAccessRule Modifies a rule in a permission group.
DescribeAccessRules DescribeAccessRules Queries the information about rules in a permission group.

Snapshots

API

Title

Description

TagResources TagResources Creates tags and binds the tags to file systems.
ListTagResources ListTagResources Queries tags.

Tags

API

Title

Description

CreateLifecyclePolicy CreateLifecyclePolicy Creates a lifecycle policy.
UpdateLifecyclePolicy UpdateLifecyclePolicy Updates the rules of a lifecycle policy. This operation is supported only for CPFS for AI file systems. The `UpdateLifecyclePolicy` operation overwrites the entire policy. Omitting an optional parameter deletes its corresponding configuration. To add a rule to an existing policy, call the `DescribeLifecyclePolicies` operation to retrieve the current policy, append the new rule, and then call `UpdateLifecyclePolicy` with the updated configuration.
DeleteLifecyclePolicy DeleteLifecyclePolicy Deletes a lifecycle policy.
ModifyLifecyclePolicy ModifyLifecyclePolicy Modifies a lifecycle policy.
GetDirectoryOrFileProperties GetDirectoryOrFileProperties Checks if a specified directory contains infrequent access or archive storage files, or if a specified file is an infrequent access or archive storage file.
DescribeLifecyclePolicies Query lifecycle management policies Retrieves a list of lifecycle management policies.
StartLifecyclePolicyExecution StartLifecyclePolicyExecution Starts the execution of a lifecycle policy.
StopLifecyclePolicyExecution StopLifecyclePolicyExecution Stops the execution of a lifecycle policy.
DescribeLifecyclePolicyLogs DescribeLifecyclePolicyLogs Queries the execution logs of a lifecycle policy, returning up to 1,000 entries from the last 90 days. This feature is only available for CPFS AI Computing Edition.
ListDirectoriesAndFiles ListDirectoriesAndFiles Lists Infrequent Access files and the subdirectories that contain them from a specified directory on a General-purpose NAS file system.

Quotas

API

Title

Description

CreateRecycleBinRestoreJob CreateRecycleBinRestoreJob Restores a file or directory from the recycle bin.
CreateRecycleBinDeleteJob CreateRecycleBinDeleteJob Creates a job to permanently delete a file or directory from the recycle bin.

Lifecycle management

API

Title

Description

ChangeResourceGroup Change resource group Changes the resource group to which a file system instance belongs.

Recycle bin

API

Title

Description

DetachVscFromFilesystems Dissociate a VSC device from a file system Dissociates a VSC device from a file system.
AttachVscToFilesystems Associate a VSC device with a file system Associates a VSC device with a file system.
DescribeFilesystemsVscAttachInfo Query virtual storage channel information associated with a file system Queries the virtual storage channel information associated with a file system.