This topic describes what you need to prepare before migration.


If the account that hosts Apsara File Storage NAS is different from the account that hosts Object Storage Service (OSS), log on to the Data Transport console with the account that hosts NAS to create an NAS data address.

Estimate the amount of data to be migrated.

Estimate the size and the number of files to be migrated. Log on to the OSS console, click the name of the bucket to be migrated, and then check the size and number of objects (files).
Note To ensure a successful migration, you must enter an appropriate size and number of files when you create a migration job.

Create and authorize a RAM user

  1. Log on to the RAM console.
  2. In the left-side navigation pane, choose Identities > Users > Create User.
  3. On the Create User page, select Console Password Logon and Programmatic Access, and then enter the required RAM user information.
  4. Save the generated account, password, AccessKey ID, and AccessKey secret.
  5. Find the RAM user, and click Add Permissions in the Actions column. Grant the read and write permissions on OSS (AliyunOSSFullAccess) and the management permissions on Data Online Transport (AliyunMGWFullAccess) to the RAM user.
  6. In the left-side navigation pane, choose Overview > RAM user logon. On the RAM User Logon page, log on to the official website of Alibaba Cloud as a RAM user.

Apsara File Storage NAS