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What is the rationale for having multiple instances rather than just creating copies of a database? or creating another SQL Server?<br />
I'm trying to determine when to create an instance versus when to just copy the database or install SQL server all over again in a different box?<br />
<br />
The answers I found on the web are a bit hazy on the rationale for setting up instances of SQL.
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What is the rationale for having multiple instances rather than just creating copies of a database? or creating another SQL Server?
I'm trying to determine when to create an instance versus when to just copy the database or install SQL server all over again in a different box?

The answers I found on the web are a bit hazy on the rationale for setting up instances of SQL.

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Hi 65TD:<br />
<br />
What is an Active/Passive cluster?<br />
When would you use it?<br />
<br />
BT
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Hi 65TD:

What is an Active/Passive cluster?
When would you use it?

BT

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<div class="content wysiwyg-content">
What is an SQL instance?<br />
What is an SQL cluster?<br />
The web descriptions are not really clear and don't &nbsp;give any examples!!!
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</div>


What is an SQL instance?
What is an SQL cluster?
The web descriptions are not really clear and don't  give any examples!!!

SQL - What is an SQL Instance?  What is an SQL Cluster?  Are these related?

MySQL is an open source, relational database management system that runs as a server providing multi-user access to a number of databases. Acquired by Oracle in 2009, it is frequently used in combination with PHP installations, powering most of the WordPress installations.

MySQL Server

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.

Databases

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.