Copying backups
You can use Amazon FSx to manually copy backups within the same AWS account to another AWS
Region (cross-Region copies) or within the same AWS Region (in-Region copies). You can make cross-Region
copies only within the same AWS partition. You can create user-initiated backup copies using the
Amazon FSx console, AWS CLI, or API. When you create a user-initiated backup copy, it has the type
USER_INITIATED.
Cross-Region backup copies are particularly valuable for cross-Region disaster recovery. You take backups and copy them to another AWS Region so that in the event of a disaster in the primary AWS Region, you can restore from backup and recover availability quickly in the other AWS Region. You can also use backup copies to clone your file dataset to another AWS Region or within the same AWS Region. You make backup copies within the same AWS account (cross-Region or in-Region) by using the Amazon FSx console, AWS CLI, or Amazon FSx API.
Backup copy limitations
The following are some limitations when you copy backups:
-
Cross-Region backup copies are supported only between any two commercial AWS Regions, between the China (Beijing) and China (Ningxia) Regions, and between the AWS GovCloud (US-East) and AWS GovCloud (US-West) Regions, but not across those sets of Regions.
-
Cross-Region backup copies are not supported in opt-in Regions.
-
You can make in-Region backup copies within any AWS Region.
-
The source backup must have a status of
AVAILABLEbefore you can copy it. -
You cannot delete a source backup if it is being copied. There might be a short delay between when the destination backup becomes available and when you are allowed to delete the source backup. You should keep this delay in mind if you retry deleting a source backup.
-
You can have up to five backup copy requests in progress to a single destination AWS Region per account.
Permissions for cross-Region backup copies
You use an IAM policy statement to grant permissions to perform a backup copy operation. To communicate with the source AWS Region to request a cross-Region backup copy, the requester (IAM role or IAM user) must have access to the source backup and the source AWS Region.
You use the policy to grant permissions to the CopyBackup action
for the backup copy operation. You specify the action in the policy's Action field,
and you specify the resource value in the policy's Resource field, as in the
following example.
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": "fsx:CopyBackup", "Resource": "arn:aws:fsx:*:111111111111:backup/*" } ] }
For more information on IAM policies, see Policies and permissions in IAM in the IAM User Guide.
Full and incremental copies
When you copy a backup to a different AWS Region from the source backup, the first copy is a full backup copy. After the first backup copy, all subsequent backup copies to the same destination Region within the same AWS account are incremental, provided that you haven't deleted all previously-copied backups in that Region and have been using the same AWS KMS key. If both conditions aren't met, the copy operation results in a full (not incremental) backup copy.
