Terms

The following table describes the terms that are used in HBR.

Term	Description
backup source	The host on which the data that you want to back up is stored, such as a server, a virtual machine, or an ECS instance.
client	The client that you install on a backup source to back up and restore data. You must install an appropriate client for different backup sources. Each client supports timed retry to guarantee backup stability. This way, data can be backed up even when temporary network jitter occurs.
region	The physical location of an Alibaba Cloud data center. After a resource is created, you cannot change the region of the resource.
backup vault	The HBR cloud repository that is used to store backup data in the cloud. You can back up data from multiple clients to the same vault. This helps you manage the backup data and reduce management time and costs. Each backup vault supports an unlimited number of clients and storage capacity with data reliability of 99.9999999999% (twelve 9s). You can install a client and extend the storage capacity based on your business requirements. You must specify an appropriate region for each backup vault to improve backup performance and facilitate disaster recovery. After a backup vault is created, you cannot change the region of the backup vault. A backup vault is also the basic unit that you can use to remove duplicates or compress data