Configuring a fixed port is usually easiest on the standalone instance. To avoid conflicts, configure one instance to use a non-default fixed port. Conflicts usually occur when two instances of the Database Engine are both configured to use the default TCP port (1433). When a SQL Server Failover Cluster Instance is installed side by side with a standalone instance of the SQL Server Database Engine, take care to avoid TCP port number conflicts on the IP addresses. For more information on Server Core installations, see Install SQL Server 2016 on Server Core. SQL Server 2016 and greater cannot be installed side-by-side with earlier versions of SQL Server on a computer that is running Windows Server 2008 R2 Server Core SP1. For more information, see Considerations for Installing SQL Server Using SysPrep. However, you can install multiple prepared instances of the same major version of SQL Server side by side on the same computer. SQL Server SysPrep does not support side by side installation of prepared instances of SQL Server with earlier versions of SQL Server on the same computer. NET installed: Existing instanceįor more information, see Using SQL Server in Windows 8 and later. The following table shows side-by-side support for each version of SQL Server on commonly supported versions of Windows with required versions of. If a default instance already exists on the computer, SQL Server must be installed as a named instance. You can install SQL Server on a computer that is already running instances of an earlier SQL Server version. Using SQL Server Side-By-Side with Previous Versions of SQL Server For more information about how to uninstall SQL Server Compact, see Uninstall an Existing Instance of SQL Server (Setup). They may be shared across major versions or by all SQL Server versions.Įxamples: Microsoft Sync Framework, SQL Server Compact.įor more information about SQL Server Compact installation, see Install SQL Server 2016 from the Installation Wizard (Setup). Components that are independent of the SQL Server versionsĬertain components are installed during SQL Server setup, but are independent of the versions of SQL Server. They share the same version as the instance that hosts them, and are used exclusively for that instance.Įxamples: Database Engine, Analysis Services, and Reporting Services. Some SQL Server components or services are specific to an instance of SQL Server. Components specific to an instance of SQL Server SQL Server versions that have the same major.minor version shared components.Įxample: Setup support files. If the shared components are selected during upgrade, the existing components are upgraded to the latest version.Įxamples: Integration Services, Master Data Services, SQL Server Management Studio, SQL Server Data Tools (SSDT), and SQL Server Books Online. SQL Server versions that have the same major version share some components across all instances. Components shared across all instances of the same major version of SQL Server Such components are usually uninstalled automatically when the last instance of SQL Server is uninstalled.Įxamples: SQL Server Browser and Microsoft SQL Server VSS Writer. When you install different versions of SQL Server side by side on the same machine, these components are automatically upgraded to the latest version. Components shared by all versions of SQL ServerĬertain components are shared by all instances of all installed versions of SQL Server. This includes displaying version information in the user interface, controlling how files are replaced during upgrade, applying service packs, and also as a mechanism for functional differentiation between the successive versions. This change to the version is used for many purposes. In each major or minor release of SQL Server, there is an increment to the version number to differentiate it from earlier versions. The standard product version format for SQL Server is MM.nn.bbbb.rr where each segment is defined as: The following concepts are useful in understanding the behavior of SQL Server for side-by-side instances of SQL Server. For supported upgrade scenarios, see Supported Version and Edition Upgrades. You can upgrade earlier versions of SQL Server on a computer where other SQL Server versions are already installed. SQL Server Reporting Services (SSRS) has a separate installation. Reporting Services (in SQL Server 2016, and previous). The following SQL Server-related items are compatible with the installation of multiple instances on the same computer: You can install multiple instances of SQL Server, or install SQL Server on a computer where earlier SQL Server versions are already installed.
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