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With a standard SQL Server platform (with no replication or redundancy), some downtime is to be expected for weekly/monthly patching and reboots.

Is this still the case for Azure DBs (elastic pools, serverless, managed instances, etc) ?

Or can I expect them to be operational almost 100% of the time except for unexpected disasters?

userSteve
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Microsoft publishes SLA's for all services, the Azure SQL ones can be found here. In summary, the SLA ranges between 99.99% and 99.995% depending on which tier of database you are using.

Sam Cogan
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  • Thanks but I'm interested in regular scheduled downtime for weekly patching as might happen for an on-premises SQL Server, not an overall SLA based on incidents. Also that page does not list the SLA for Basic or Standard tier – userSteve Oct 03 '19 at 14:41
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    There is no scheduled maintenance for Azure SQL. The SLA is what you get. Standard and basic is listed in that doc, it is 99.99% – Sam Cogan Oct 04 '19 at 17:49