So we have covered off Server OS Virtualisation and that brings us on to Server Applications
Server Apps also needs split into 2 areas or modes
Products licensed in Server/CAL mode and Products licensed in Per Processor mode, licensing rules are product version and edition specific, always check the PUR for individual product rules
Lets look at Server/CAL mode first – Exchange/MOSS and SQL
Running Instances of the Server Software.
For each server software license you assign, you may run, at any one time, one instance of the server software in one physical or virtual operating system environment on the licensed server.
Did you know – SQL 2005 Enterprise edition provides free multi-instance in Server/CAL model, You have the following right for each server to which you assign a software license. You may run, at any one time, any number of instances of the server software in one physical and any number of virtual operating system environments on that server.
Very straight forward!
Now Per Processor mode – 3 steps to license correctly – SQL/BizTalk
1. Count the Physical Procs in Physical OS environments
2. Count the Virtual Procs in Virtual OS environments
3. Add them together = Total Proc count
Once you purchase the correct number of Procs and assign the licenses to the server, you may run, at any one time, any number of instances of the server software in physical and virtual operating system environments on the licensed server.
Some Exceptions to Per Proc – Good News for SQL 2005 Enterprise Edition and BizTalk 2006 SP2 Enterprise Edition Customers!! You count only the Physical Processors in the box, NOT the virtual Proc, so if you have a box with 8 Physical proc and 16 Virtual Procs, you pay for 8 Physical Procs – you are capped at the physical proc count!
Did you know – Processor in Microsoft licensing is the proc on the board, not the cores and threads – multi-cores or hyper-threading is irrelevant to us, count physical procs in a physical OS environment, count Virtual Procs in a virtual OS environment
Did you know – SQL 2005 Workgroup/Std or Enterprise edition provides free of charge Fail-over rights on the same or an alternative server, For any operating system environment in which you run instances of the server software, you may run up to the same number of passive fail-over instances in a separate operating system environment for temporary support. You may run the passive fail-over instances on a server other than the licensed server.
Learn more about the benefits of Virtualisation