Help Center/ Bare Metal Server/ Best Practices/ Backup/ Buying a Server Backup Vault

Updated on 2025-11-07 GMT+08:00

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Buying a Server Backup Vault

Go to the Buy Server Backup Vault.

Set parameters as instructed in the tables below. For parameters not included in the tables, retain the default values.

Complete Basic Settings and select a Protection Type.

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Parameter	Description	Example Value
Billing Mode	Pay-per-use is a postpaid billing mode. You are billed based on your resource usage. You can buy or delete vaults anytime. Expenditures are deducted from the account balance. Yearly/Monthly is a prepaid billing mode. You are billed based on the subscription duration you specify. This mode provides lower prices and is ideal when the resource use duration is predictable.	Pay-per-use
Region	Resources in different regions cannot communicate with each other over internal networks. For lower latency and faster access, select the region nearest to you. Once a vault is created, its region cannot be changed.	CN-Hong Kong
Protection Type	Backup: The vault will be used to store server backups. Replication (cross-region): The vault will be used to store replicas of server backups. If you select Replication (cross-region), you do not need to select a server. For example, if you want to back up a server, select Backup for the vault protection type. If you want to replicate backups of a server from one region to another, select Replication (cross-region) for the vault in this other region.	Backup
Backup Data Redundancy	Single-AZ: Backup data is stored in a single AZ, with lower costs. Multi-AZ: Backup data is stored in multiple AZs for higher reliability. If an AZ is unavailable, backup data can still be accessed from other AZs. Once a vault is created, its backup data redundancy policy cannot be changed. Plan and select a policy that best suits your service needs.	Single-AZ

Configure Resources to Back Up, Backup Capacity, and Backup Policy.

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Parameter	Description	Example Value
Resources to Back Up	Configure: Select the servers to associate. Skip: If no server is available, you can purchase a vault first and associate servers later.	Skip
Backup Capacity	Set the vault capacity. The value ranges from 10 GB to 10,485,760 GB. You need to properly plan the vault capacity and ensure that it is not smaller than the size of the servers you want to back up. If automatic association is enabled and a backup policy is applied to the vault, plan more capacity as needed. As the vault's used space grows, you can expand the vault capacity if it becomes insufficient.	100 GB
Auto Capacity Expansion	If you select Configure for Auto Capacity Expansion, the vault capacity will be expanded automatically to 1.25 times the size of the original capacity when the capacity is about to be used up. For example, if the vault capacity is 100 GB but more than 100 GB is required by a backup, the vault capacity will be expanded to 125 GB automatically. When the 125 GB of capacity is about to be used up, the vault capacity will be expanded to 157 GB.	Skip
Auto Backup	Configure: A backup policy can be applied to this vault. Servers associated with this vault will be backed up automatically based on the policy. You can select an existing backup policy or create a new one. For example, select the backup policy created in Creating a Backup Policy. Skip: Servers associated with this vault will not be backed up automatically. If needed, you can create a policy and apply it to this vault later to back up servers periodically and automatically. For details, see Policy Management.	Configure
Automatic Association	Configure: In the next backup cycle, CBR will automatically scan for unprotected servers, associate them with the vault, and perform backups. Skip: To enable automatic association later, see Associating Resources with a Vault.	Skip

Configure Enterprise Project and Advanced Settings.

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Parameter	Description	Example Value
Enterprise Project	Add the vault to an existing enterprise project. This parameter is only available for enterprise users who have enabled enterprise project management. NOTE: If the CBR FullAccess permissions have been assigned to IAM users, enterprise projects will not be displayed for you to choose from when you create a vault. Go to the Enterprise Project Management console and assign the CBR FullAccess permissions to the target user group.	default
Vault Name	Enter a name for the vault. A name contains a maximum of 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed. You can also use the default name vault_xxxx.	vault-317a

Parameter

Description

Example Value

Enterprise Project

Add the vault to an existing enterprise project.

This parameter is only available for enterprise users who have enabled enterprise project management.

NOTE:

If the CBR FullAccess permissions have been assigned to IAM users, enterprise projects will not be displayed for you to choose from when you create a vault. Go to the Enterprise Project Management console and assign the CBR FullAccess permissions to the target user group.

default

Vault Name

Enter a name for the vault.

A name contains a maximum of 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed. You can also use the default name vault_xxxx.

vault-317a

Click Next.
Click Submit.
Go back to the Cloud Server Backups page, you can view the created vault in the vault list. The vault status is Available.