[DOC] Searchable Snapshots - GA

[hdhalter]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request. Provide a summary of the request and all versions that are affected.
Currently an experimental feature, Searchable Snapshots will be generally available in 2.7.

For GA: Today, the data indexed in OpenSearch is stored locally on the storage attached to the instance which limits it to the available instance storage. To store more data, users have to scale their hot tier which is costly. To provide cost savings, users can opt to store data in remote store using the snapshot mechanism in the configured repository. Then, We will provide capability to search a remote index backed by snapshot in a configured repository of different cloud providers (AWS S3, GCS, etc) supported by OpenSearch.

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
The SDM is Anas Alkous (@anasalkouz) and the SDE is Andrew Ross (@Andross).

See opensearch-project/OpenSearch#2578 and opensearch-project/OpenSearch#3739