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This is mostly related with databases applications :)<br />
<br />
Single instance means:<br />
If database app uses database and one node would fail then there is short outage because database is initialized on another node. Changes are executed only on active node with database<br />
<br />
Multiple instance means:<br />
If database app uses database and one node would fail then there is no outage because database is initialized on both nodes. Changes are executed on each database instance concurrently. So, resource is moved to another node where database contains the same data.<br />
<br />
Regards,<br />
Krzysztof
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This is mostly related with databases applications :)

Single instance means:
If database app uses database and one node would fail then there is short outage because database is initialized on another node. Changes are executed only on active node with database

Multiple instance means:
If database app uses database and one node would fail then there is no outage because database is initialized on both nodes. Changes are executed on each database instance concurrently. So, resource is moved to another node where database contains the same data.

Regards,
Krzysztof

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Hi Krzysztof,<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Can u tell the example apps which works on single instances and multiple instances. Thanks in advance.
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Hi Krzysztof,

                     Can u tell the example apps which works on single instances and multiple instances. Thanks in advance.

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<div class="content wysiwyg-content">
Dear Team,<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;While i am configuring Fail over clustering having a doubt that the difference between Single instance application and multiple instance application and example for these two type of applications. Please provide support these.
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Dear Team,

                       While i am configuring Fail over clustering having a doubt that the difference between Single instance application and multiple instance application and example for these two type of applications. Please provide support these.

Windows 2008 FailOver Cluster

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).