1. Basic concepts

Concept	Explanation
Tenants	Users who use AvatarStor cloud backup.
Client	Installed on the server that the tenant needs to back up. It also refers to each server that the tenant needs to back up.This is the "From" in the "From-What-To-Where-and-When" of the entire backup process.
Server level	Provide AvatarStor cloud backup SaaS service.
Page	Front-end page for tenant registration, backup and recovery management.
Storage	Write target for tenant data.This is the "Where" in the "From-What-To-Where-and-When" of the entire backup process.
Example	The database name and its related path configuration installed on the Client, as well as the account password for local login of the database, are necessary parameters in the backup and recovery process. These attribute parameters together are called instances. Only with an instance backup system can we know which databases exist on the Client.This is the "What" in the "From-What-To-Where-and-When" of the entire backup process.
Backup policy	The specific data content of the backup runs on a certain time period, and the combination of parameters such as the retention days of the data is called the backup strategy.The strategy includes all parameters in the "From-What-To-Where-and-When" of the entire backup process plus the method of managing the expiration of data.
Scheduled time	When is the strategy triggered?This is the "When" in the "From-What-To-Where-and-When" of the entire backup process.