Alibaba Cloud Elasticsearch allows you to create automatic and manual snapshots, restore data from snapshots, and configure shared Object Storage Service (OSS) repositories to ensure the reliability of your Elasticsearch cluster. This topic describes the use scenarios and limits of the preceding features.

Feature Use scenario Limit
Create automatic snapshots and restore data from automatic snapshots You want the system to automatically back up data on a regular basis.
  • Data in snapshots can be restored only to the cluster for which the snapshots are created.
  • The system stores only the snapshots that are created during the last seven days.
Create manual snapshots and restore data from manual snapshots
  • You want to use commands to manually back up data.
  • You want to restore data from snapshots to a cluster that resides in the same region as the cluster for which the snapshots are created.
  • You must activate OSS and create a bucket in the same region as the clusters.
  • Data cannot be automatically backed up on a regular basis.
Configure a shared OSS repository You want to restore data from the automatic snapshots of a cluster to another cluster.
  • The two clusters must reside in the same region and belong to the same Alibaba Cloud account.
  • The version of the destination cluster must be the same as or higher than that of the cluster for which the snapshots are created.