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) storage medium. If you want to frequently access some files stored in the IA storage medium, 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 storage medium. This topic describes how to create a data retrieval task.
If you run a data retrieval task, you are charged for the read traffic of the IA storage medium based on the size of the retrieved files. For more information, see Billing of General-purpose NAS file systems.
After the files in the IA storage medium are retrieved to a General-purpose NAS file system, you are charged based on the storage usage of the General-purpose NAS file system (Capacity or Performance NAS 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, select the file system to store the retrieved files and select the path to the files.
Use the API
You can also call the CreateLifecycleRetrieveJob operation to create a data retrieval task.