December 2017
Intermediate to advanced
434 pages
10h 14m
English
Content preview from SQL Server 2017 Administrator's Guide
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Rolling upgrade
Rolling upgrade method is used on the SQL Server environment, where you need to keep the correct order of the upgrade between multiple servers and instances. This approach is used mainly with high availability or disaster recovery solutions, such as:
- Always-On availability failover cluster
- Always-On availability groups
- Mirroring
- Log shipping
- Replication
Rolling upgrade is also used with several services such as reporting Service if scale-out deployment for high availability and load balancing is used.
Upgrading the SQL Server if more servers are used for high availability and disaster recovery usually starts with the passive node of the installed solution. Depending on the solution, you will have to perform manual failover ...
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