The Business Intelligence Blog

September 20, 2009

SQL Server Licensing Models

SQL Server(2008) licensing comes under three models.

1. Server plus device CAL: A server license is required for each operating system on which SQL Sever is running, as well as CALs for each client device(PC, workstation etc). This model will be efficient when there are multiple users per each device.

2. Sever plus user CAL: A server license is required for each operating system on which SQL Sever is running, as well as CALs for each user(employee, customer, partner etc). This model will be efficient when there are multiple devices per each user.

3. Processor License: This model requires a license for each CPU running SQL Server. This license includes unlimited number of users or devices to connect from either inside or outside the firewall. Customers do not need to purchase additional client access licenses (CALs) when licensed under the per processor model.

Note: In case an organization is using multiplexing or pooling hardware and/or software, a CAL is required for each distinct device or user that is connected to the multiplexing or pooling software or hardware front end.

Source: SQL Server 2008 Licensing Overview – Microsoft Corporation

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