TAILIEUCHUNG - The Real MTCS SQL Server 2008 Exam 70/432 Prep Kit- P14

The Real MTCS SQL Server 2008 Exam 70/432 Prep Kit- P14: Congratulations on your journey to become certified in SQL Server 2008. This book will help prepare you for your exam and give you a practical view of working with SQL Server 2008. | Installing SQL Server 2008 Chapter 2 47 Head of the Class. The Architecture in Installation Planning One of the many times that architecture is critical is in the planning of upgrades and migrations. Prior to placing the installation disk near any disk drive it is critical to know what the existing physical and software architecture currently is in the production and test environments. By documenting the as-is architecture you ll be able to accurately and confidently push back those scope creep requirements of making do with less. An example of a problem upgrade by a customer was communicated to me like this once The production SQL Server database environment with 4GB of memory and 100 GB of data space works fine but when we upgraded the database to a SQL Server instance with 1 GB of memory and 20 GB of disk on a slower processor space it is significantly slower. After a long pause I repeated the scenario that was described to me and noted that the difference in the system configuration would mean that the application using the production server may require more memory and disks. I then asked the key question What type of processing does the application perform against the database Besides keeping up with the latest version key questions to ask include What are the goals of the upgrade What is the architecture vision of the application s database you will be upgrading Is the goal to improve performance or implement a new feature Understanding what the end game expectation is key to a successful upgrade. Regardless of the intent of the upgrade ensure that you have a repeatable process to measure and log the performance of specific business scenarios on the existing production system the test upgrade Continuée 48 Chapter 2 Installing SQL Server 2008 environment and the post-upgrade environment. Whatever the performance metrics you are going to measure they must be specific. Improving general system performance by 10 percent does not cut it Identify the specific set .

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