Replicating a Vault Across Regions

Scenarios

CBR allows you to replicate server backup vaults and SFS Turbo backup vaults entirely to replication vaults in other regions of the same account. Replicas of server backups in the destination region can be used to create images and provision servers. Replicas of SFS Turbo backups in the destination region can be used to create file systems to quickly deploy services across regions.

There are two methods available for replicating a vault.

• Manual replication: Select a backup vault and manually replicate it.
• Policy-based replication: Configure a replication policy to periodically replicate backups that have not been replicated or failed to be replicated to the destination region.

Constraints

• Disk backup vaults cannot be replicated to other regions.
• Backup data can be replicated to vaults in different regions, and backup replicas occupy the replication vault space.
• A server backup vault can be replicated only when it contains at least one backup that meets all the following conditions:
  1. The backup is an ECS backup.
  2. The backup contains system disk data.
  3. The backup is in the Available state.
• An SFS Turbo backup can be replicated only when it meets all the following conditions:
  1. It is generated for an SFS Turbo file system.
  2. It is in the Available state.
• Only backup vaults of the same type can be replicated. Replicated vaults cannot be replicated again but their replicas can be used to create images or SFS Turbo file systems.
• A backup vault can be replicated to different destination regions. For manual and policy-based vault replication, a vault can only be replicated to a destination region once. It cannot be replicated to that region again, even if its backups have been deleted.
• Only vaults of the same type can be selected as destination vaults. For example, if you want to replicate server backups to a different region, select a server backup vault (Protection Type set to Replication) in that region.
• Only replication-supported regions can be selected as destination regions. For details, see Table 1

  Table 1 Replication-supported regions

  Source Region	Destination Region	Description
  CN North-Ulanqab1	CN North-Beijing4, CN East-Shanghai1, and CN South-Guangzhou	-
  CN South-Shenzhen	CN North-Beijing4	-
  CN Southwest-Guiyang1	CN North-Beijing 4 and CN East-Shanghai1	-
  CN North-Beijing1	CN North-Beijing4, CN East-Shanghai2, CN East-Shanghai1, and CN South-Guangzhou	-
  CN North-Beijing4	CN North-Ulanqab1, CN South-Shenzhen, CN Southwest-Guiyang1, CN North-Beijing1, CN East-Shanghai2, CN East-Shanghai1, and CN South-Guangzhou	-
  CN East-Shanghai2	CN North-Beijing1, CN North-Beijing4, CN East-Shanghai1, and CN South-Guangzhou	-
  CN East-Shanghai1	CN North-Ulanqab1, CN Southwest-Guiyang1, CN North-Beijing1, CN North-Beijing4, CN East-Shanghai2, and CN South-Guangzhou	-
  CN South-Guangzhou	CN North-Ulanqab1, CN North-Beijing1, CN North-Beijing4, CN East-Shanghai2, and CN East-Shanghai1	-
  CN-Hong Kong, AP-Bangkok, and AP-Singapore	CN-Hong Kong, AP-Bangkok, and AP-Singapore	Vaults can be replicated from one region to another.
  LA-Mexico City2	LA-Sao Paulo1
  LA-Sao Paulo1	LA-Mexico City2, LA-Santiago
  LA-Santiago	LA-Sao Paulo1, LA-Lima1
  LA-Lima1	LA-Santiago

Procedure

1. Log in to the CBR console.
   1. Log in to the management console.
   2. Click in the upper left corner and select a region.
   3. Click and choose Storage > Cloud Backup and Recovery. Select a backup type from the left navigation pane.

2. On the Vaults tab, find the target backup vault.
3. Choose More > Create Replica in the Operation column of the vault. See Figure 1.
   Figure 1 Creating a replica

   

4. In the displayed dialog box, configure the parameters as described in Table 2.

   Table 2 Parameter description

   Parameter	Description
   Destination Region	Region to which the vault is replicated Only the regions that support replication will be displayed. If the selected region contains only one project, you can directly select the region name. If the selected region has multiple projects, the default project of the region is selected. You can select another project if needed.
   Destination Vault	A replication vault in the destination region

5. Click OK.
6. After the replication is complete, you can switch to the destination region to view generated replicas. For details, see Querying a Vault. You can then use replicas to create images.