Different versions of SQL Server and your operating system support a range of memory configurations. For example SQL Server 2000 Standard Edition will use 2 GB RAM, whereas SQL 2005 Enterprise Edition will take advantage of the operating system's maximum limit.
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Furthermore, you should purchase the greatest amount of RAM that your version of SQL server and the OS will support. Invest in RAM that offers the fastest response as well. On a limited budget, the greatest performance improvement is generally obtained by investing in RAM.
Here is a grid illustrating the maximum available memory for the various editions of SQL Server.
|System||Memory (GB / TB)||Processors|
|SQL Server 2000 Standard Edition||2||4|
|SQL Server 2000 Enterprise (32 bit)||3 / 32 when running on Windows Server 2003 Enterprise||4 / 8 when running on Windows Server 2003 Enterprise|
|SQL Server 2000 Enterprise (64 bit)||64 when running on Windows Server 2003 Enterprise||8 when running on Windows Server 2003 Enterprise|
|SQL Server 2005 Standard & Enterprise (32 bit)||Operating system maximum currently 4 GB Standard, 64 GB Enterprise Edition on Windows Server 2003||Operating system maximum currently 4 GB Standard, 8 GB Enterprise on Windows Server 2003|
|SQL Server 2005 Standard & Enterprise (64 bit)||32 GB Standard, 1 TB Enterprise||8|
|SQL Server 2005 Standard & Enterprise (64 bit) running on Windows 2003 Data Center||1 TB||64|
Spec your SQL Server hardware needs:
- Home: Introduction
- Step 1: Invest in good application design
- Step 2: Understand your workload
- Step 3: Know your memory support limitations
- Step 4: Choose a reliable hardware brand
- Step 5: Take advantage of 64-bit
- Step 6: Take advantage of storage area networks
- Step 7: Properly configure your RAID arrays
- Step 8: Use separate disk controllers
- Step 9: Choose and optimize your disks wisely
- Step 10: Optimize CPU activity and speed
ABOUT THE AUTHOR:
Hilary Cotter has been involved in IT for more than 20 years as a Web and database consultant. Microsoft first awarded Cotter the Microsoft SQL Server MVP award in 2001. Cotter received his bachelor of applied science degree in mechanical engineering from the University of Toronto and studied economics at the University of Calgary and computer science at UC Berkeley. He is the author of a book on SQL Server transactional replication and is currently working on books on merge replication and Microsoft search technologies.
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