Understanding Azure SQL Elastic Pool

Kevin Feasel

2016-12-20

Cloud

Vincent-Philippe Lauzon explains how SQL Elastic Pools work and why we might want to use them in Azure:

Along came Elastic Pool.  Interestingly, Elastic Pools brought back the notion of a centralized compute shared across databases.  Unlike on premise SQL Server on premise though, that compute doesn’t sit with the server itself but with a new resource called an elastic pool.

This allows us to provision certain compute, i.e. DTUs, to a pool and share it across many databases.

His example is using a large number of small databases, where the total load is never the sum of individual expected loads.  Another reason to use a pool is for cross-database queries in Azure.

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