A physical region where resources use independent power supply and networks. AZs are physically isolated but interconnected through the internal network. To enhance application availability, you are advised to create instances in different AZs.
A process of creating data copies on backup media. If the source data is damaged or lost, the data copies can be used to restore the source data.
A policy used to automatically back up data by specifying the backup time, backup period, retention rules, and other items. After a backup target is associated with a backup policy, the system will automatically back up data and delete expired backups according to the policy.
Enhanced backups support Instant Restore. Common backups do not support Instant Restore.
A backup method used to back up only data space modified since the last backup. The last backup can be either full backup or incremental backup. Incremental backup can be implemented only on a target that has been fully backed up.
Instant Restore is a feature that provides the instant restoration function for restoring data and creating images using backups. With Instant Restore enabled, the time required for restoring data and creating images can be reduced to minutes, which is much faster than the normal restoration function.
Regions are divided from the dimensions of geographical location and network latency. Public services, such as Object Storage Service (OBS), Virtual Private Cloud (VPC), and Image Management Service (IMS), are shared within the same region. Users can select a region closest to them to reduce access latencies.
Volume Backup Service (VBS) backs up and restores Elastic Volume Service (EVS) disks. You can configure backup policies to implement periodic incremental backup of EVS disks and to store data across data centers so as to improve data reliability.
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