SRE/Data Persistence/Distributed storage

From Wikitech

SRE Data Persistence technical documentation

One stop shop for everything you need to respond to a distributed storage-related incident.
Key dashboards showing the health of the distributed storage infrastructure.
Step by step instructions on how to deploy and operate the distributed storage services.
Details of the distributed storage architecture and configuration.
Experienced data loss? Have something that needs backing up? Look here.