tailieunhanh - The Best Damn Windows Server 2003 Book Period- P29

The Best Damn Windows Server 2003 Book Period- P29:The latest incarnation of Microsoft’s server product,Windows Server 2003, brings many new features and improvements that make the network administrator’s job chapter will briefly summarize what’s new in 2003 and introduce you to the four members of the Windows Server 2003 family: the Web Edition, the Standard Edition, the Enterprise Edition, and the Datacenter Edition. | 246 Chapter 7 Planning Implementing and Maintaining a High-Availability Strategy One of the downsides of multiple processors is the management of interrupts. The first CPU in a multiprocessor system processor 0 controls I O. If an application running on another CPU requires a lot of I O CPU 0 can spend much of its time managing interrupts instead of running an application. Windows Server 2003 manages multiple processors and interrupts quite well but there is a way to tune the affinity of a thread to a specific processor. Processor affinity is a method of associating an application with a specific CPU. Processor affinity can be used to reduce some of the overhead associated with multiple CPUs and is controlled primarily via the Task Manager utility. Priority is a mechanism used to prioritize some applications or threads over others. Priority can be set when an application is started or can be changed later using the Task Manager utility. Disk The disk is the permanent storage location of the operating system applications and data. A disk is made up of one or more physical drives. Often a computer system will contain multiple disks configured in arrays which can be useful for increasing performance and or availability. Several factors contribute to the performance and reliability of disk The disk controller technology The life-expectancy MTBF of the drive s The way data is arranged on the drive s The way data is accessed on the drive s The ratio of drive controllers to the number of drives Network Components The primary and default communications protocol used by Windows Server 2003 is TCP IP. The operating system also supports the next generation of the TCP IP protocol IP version 6 IPv6 as well as the AppleTalk Reliable Multicast and NWLink protocols. Multiple protocols installed on a system consume additional memory and CPU resources. Reducing the number of protocols in use will improve performance. On systems that do have multiple protocols loaded change the .