CSBS provides two configuration modes of one-time backup and periodical backup. One-time backup refers to a one-time backup task manually created by the user. Periodical backup refers to the periodical backup task created by the user by creating a backup policy and binding the backup policy to the ECS.

The following table shows the comparison of the two configuration modes of CSBS. Please select the appropriate configuration mode according to the actual situation.

Comparison Item	One-time Backup	Periodical Backup
Backup Policy	No required	Required
Number of backups	Execute the one-time backup manually	Execute periodical backups according to the backup policy
Number of ECSs that can be backed up at a time	1	≤64
Backup name	Support customization	Automatically generated by the system
Backup mode	Full backup for the first time, and subsequent incremental backup	Full backup for the first time, and subsequent incremental backup
Recommended application scenarios	Backup can be executed before the ECS installs the patches of the operating system, upgrades the operating system, upgrades Apps and performs other operations, which can quickly recover the ECS to its status before the change in the event of installation or upgrade failure.	The daily backup of the ECS for the purpose of protection, so that the last backup can be used for recovery when an unforeseen fault occurs to cause data lost.

In addition, you can also combine the two modes according to actual conditions. For example, according to the importance of data stored in the ECS, all ECSs can be added to a backup policy for daily backup protection. For some ECSs that store very important data, one-time backup can be executed from time to time according to needs to ensure data security.

Cloud Server Backup Service

Scenario Descriptions