Design considerations
You’ll need to familiarize yourself with several important concepts when determining which SQL
Database business continuity feature to use. The business continuity features for SQL Database across
the service tiers, including RTO and RPO, are described in the following list and are depicted in Table
6-2.
Estimated Recovery Time (ERT) Indicates the estimated time needed before the database is
fully available after a restore or failover request
Recovery Time Objective (RTO) Indicates the maximum downtime before the application is
functional after a disaster
Recovery Point Objective (RPO) Indicates the maximum amount of recent data loss (in terms
of time) before the application is functional after a disaster
Table 6-2 Business continuity options for SQL Database tiers
Business continuity feature
Basic tier
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