Sharing a Backup

You can share server or disk backups with projects of other accounts. Shared backups can be used to create servers or disks.

Sharer

Backups can only be shared among projects of accounts in the same region. They cannot be shared across regions.
Backups cannot be shared across regions. Account to which a backup is shared must be in the same region as the backup.
When a sharer deletes a shared backup, the backup will also be deleted from the recipient's account, but the disks or servers previously created using the backup will be retained.
When an encrypted backup is shared, the encryption key must be shared with the recipient so that the recipient can use the shared backup.
- For details about how to share an encryption key, see creating a grant of Data Encryption Workshop (DEW) or the creating a resource share of Resource Access Manager (RAM). To obtain the recipient Account ID, hover over the username and choose My Credentials. On the API Credentials page that is displayed, the Account ID is shown,
- Cloud disk backup encryption depends on an agency created that grants KMS access permissions to EVS. If the disk to be backed up is encrypted, the disk backup generated will be an encrypted backup. The encryption attribute of backups cannot be changed.

Recipient

A recipient must have at least one backup vault to store the accepted shared backup, and the vault's remaining space must be greater than the size of the backup to be accepted.
A recipient can choose to accept or reject a backup. After accepting a backup, the recipient can use the backup to create new servers or disks.
When a sharer deletes a shared backup, the backup will also be deleted from the recipient's account, but the disks or servers previously created using the backup will be retained.

The retention rule of the backup shared to the recipient is the same as that of the original backup set the initiator.

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.
Click the Backups tab and set filter criteria to view the backups.
Locate the target backup and choose More > Share Backup in the Operation column.

The backup name, server or disk name, backup ID, and backup type are displayed.
- Sharing a backup
  Figure 1 Share Backup
1. Click the Share Backup tab.
2. Enter the project ID of the recipient. A project ID indicates a tenant's resources. For details about how to obtain a project ID, see Obtaining a Project ID.
3. Click Add.
  
  The project ID to be added will be displayed in the list. You can add multiple project IDs. A backup can be shared to a maximum of 10 projects.
4. Click OK.
- Canceling sharing
1. Select Cancel sharing for Type, select the projects you want to cancel sharing, and click OK. See Figure 2.
  Figure 2 Cancel Sharing

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.
Click the Backups tab and then click Backups Shared with Me.
Ensure that the recipient has at least one backup vault before accepting the shared backup. For how to purchase a backup vault, see Purchase a Vault.
Click Accept. On the displayed page, select the vault used to store the shared backup. Ensure that the vault's remaining capacity is greater than the backup size. See Figure 3.

Automatic Association: Determine whether to enable automatic association for the vault. If you select Configure, the vault automatically scans and associates in the next backup period servers that have not been backed up and performs backup.
Figure 3 Accepting a shared backup
View the shared backup you accepted in the backup list. See Figure 4.

Figure 4 Shared backup accepted