CTERA Portal Installations > Nutanix > Managing CTERA Portal Servers > Backing Up the Database
Backing Up the Database
CTERA Portal uses PostgreSQL to store metadata. This database must be backed up to ensure continued use of CTERA Portal in order to ensure data and metadata persistence and consistency on the CTERA platform, and to keep Recovery Time Objective (RTO) and Recovery Point Objective (RPO) values to a minimum.
Calculating the Minimum Space Required for the Database Backup
The database storage used for backup does not have SSD storage. You require double the storage for the backup. For example, if the master database uses 1TB storage and a slave database uses another 1TB, then each of these databases require 2TB for backup. The storage pool must be at least 6TB: 1TB for the master database, 1TB for the slave database and 4TB for the master and slave backup (2TB for each backup).
Note: You must define a database archive pool, whether using PostgreSQL continuous archiving or PostgreSQL Streaming Replication. Both Using PostgreSQL Continuous Archiving and Using PostgreSQL Streaming Replication procedures describe how to create an archive pool.