After you enable the lifecycle management feature for a file system, the files that meet the rule specified in the lifecycle policy are automatically dumped to the Infrequent Access (IA) or Archive storage class. If you want to frequently access some files stored in the IA or Archive storage class, we recommend that you create a data retrieval task to retrieve data from specified files or directories to a General-purpose NAS file system. This way, you can prevent the traffic fees incurred when you read data from or write data to the IA or Archive storage class. This topic describes how to create a data retrieval task.
Billing
If you run a data retrieval task, you are charged for the read traffic based on the storage class (IA or Archive) and the size of the retrieved files. For more information, see Billing of General-purpose NAS file systems.
If you retrieve files from the IA or Archive storage class to a General-purpose NAS file system, you are charged for the storage usage of the General-purpose NAS file system (Capacity, Performance, or Premium file system). For more information, see Billing of General-purpose NAS file systems.
Use the NAS console
Log on to the NAS console.
In the left-side navigation pane, choose Lifecycle Management > Data Retrieval Tasks.
In the top navigation bar, select a region.
On the Data Retrieval Tasks page, click Create Data Retrieval Task.
In the Create Data Retrieval Task dialog box, specify the file system to store the retrieved files, the storage class, and the file or directory paths.
Click OK.
Use the API
You can also call the CreateLifecycleRetrieveJob operation to create a data retrieval task.