You can use Cloud Backup to back up files from Elastic Compute Service (ECS) instances and restore the files based on your requirements. This topic describes how to prepare for a data backup.
Precautions
To optimize the backup speed, we recommend that you run a backup client on an ECS instance that has the following configurations: 64-bit processors, two or more CPU cores, and more than 8 GB of available memory.
The volume of data that can be backed up depends on the available memory. If a backup client has 4 GB of available memory, up to one million files or 8 TB of data can be backed up. If you want to back up tens of millions of files, we recommend that you configure 16 GB of available memory for the backup client.
Step 1: Create and assign the AliyunServiceRoleForHbrEcsBackup role
Before you use Cloud Backup to back up files from ECS, you must create the AliyunServiceRoleForHbrEcsBackup role and assign the role to Cloud Backup. To create and assign the role, perform the following steps:
Log on to the Cloud Backup console.
In the left-side navigation pane, choose .
In the dialog box that appears, create and assign the role as prompted.
In the Hybrid Cloud Backup Service Authorization dialog box, click Confirm Authorization.
For more information, see Service-linked roles.
Step 2: Install Cloud Assistant
A Cloud Backup client for ECS must be used together with Cloud Assistant.
If the ECS instance that you need to back up was purchased before December 1, 2017, you must install Cloud Assistant Agent. For more information, see Install Cloud Assistant Agent.
If the ECS instance that you need to back up was purchased on or after December 1, 2017, Cloud Assistant Agent is pre-installed.