You can use tags to identify resources. Tags allow enterprises and individuals to categorize their ECS resources and simplify the search and management of resources. This topic describes how to use the tag feature for ECS file backup.


Authorization is completed in Resource Access Management (RAM) and an ECS file backup client is installed. For more information, see Prepare for data backup.

Background information

You can create different tags for different ECS instances. For example, if you manage teams or projects, you can create tags by department or project and use these tags to categorize your instances. For example, you can create a tag named project:a for a project. This way, you can filter ECS instances based on the tag when you maintain ECS instances.

Usage notes

  • Each tag consists of a key-value pair.
  • A tag must be unique.

    For example, the company:a tag is added to a backup vault. If you add the company:b tag to the backup vault, the company:a tag is replaced by the company:b tag.

  • Tags are not shared across regions. For example, tags that are created in the China (Hangzhou) region are invisible to the China (Shanghai) region.


When you create tags, take note of the following limits:
Item Limit
The maximum length of a key 128 characters
The maximum length of a value 128 characters
The maximum number of custom tags that you can add to a resource 20
The key of a tag
  • The key cannot start with aliyun or acs:.
  • The key cannot contain http:// or https://.
  • The key cannot be an empty string.
The value of a tag A tag value cannot contain http:// or https://.

Create tags

  1. Log on to the HBR console.
  2. In the left-side navigation pane, choose Backup > ECS File Backup.
  3. In the top navigation bar, select a region.
  4. On the ECS File Backup page, click New Version.
  5. In the Tags (Backup Clients) column, click the label icon next to the name or ID of the ECS instance for which you want to create tags.
  6. In the dialog box that appears, click Edit.
  7. In the Key and Value fields, enter the key-value pair of a tag and click Save.
    If you want to create more than one tags, click Add a row to specify the key-value pair of a new tag.

Search for a resource by tag

On the right of the ECS Assets tab, select Client Tags from the drop-down list and enter the tag information. Then, click the Search icon.
  • You can search for a resource by using a key, as shown in the following example:
  • You can search for a resource by using a key-value pair, as shown in the following example:
  • You can search for a resource by using multiple key-value pairs, as shown in the following example: