# Associating ECSs with a Backup Policy

After creating a backup policy, you can add ECSs to it so that the ECSs are associated with the backup policy.

#### Prerequisites

- You have created at least one backup policy.
- At least one ECS in the Running or Stopped state is available.
- A maximum of 64 ECSs can be associated with a backup policy.

#### Procedure

1. Log in to the CSBS management console.

   1. Log in to the management console.
   2. Click in the upper left corner of the management console and select a region and a project.
   3. Under Storage > Cloud Server Backup Service.
2. Click the Policies tab.
3. In the row of the backup policy with which you want to associate ECSs, click Associate Server.

   Figure 1 Associating servers
4. In the server list, select the ECSs you want to associate. After ECSs are selected, they are added to the list of selected servers.

   - A maximum of 64 ECSs can be associated with a backup policy.
   - If a selected ECS has been associated with another backup policy, it will be disassociated from the original backup policy automatically and then associated with the new backup policy.
   - If EVS disks on an ECS have been associated with a VBS backup policy, disassociate them from the VBS backup policy. Otherwise, two backups are generated for each of the EVS disks.
   - You can only select ECSs that are in the Running or Stopped state.
   - CSBS supports backing up ECSs with shared EVS disks.
5. Click OK.

Parent topic: Backup Policies