Get Network+ Certification Planning and Implementing Windows network load balancing
Ask any professional administrator who has been in the indus- try for a long time, and they will tell you that the job of the administrator is twofold. First, you have to make sure things work. Second, you have to make sure they always work. On the enterprise level, this can be so extreme that it can include mcitp server administrator measurements up to the millisecond level of downtime. In fact, one administrator I spoke to at a major banking company told me that at their central location it was quite possible that a large majority of the staff may be losing their positions with the company because their servers were once down for an entire minute. And, in an industry where billions of dollars are swapped from hand to hand every minute, that could have meant millions of dollars in potential losses. For the Enterprise Administrator exam, Microsoft will test you on your knowledge of service availability, business continuity, and backup by presenting questions about the full spread of technologies available with Windows Server 2008 at the professional level. This includes technologies such as RAID, backup utilities, network load balancing, and other service and backup distributing utilities. In this chapter, I’ll cover these services in detail and discuss how these services apply to the enterprise. In the world of making backups, the first line of defense against a potential problem is a redundant array of independent (or inexpensive) disks (RAID). At this point in your career, you have probably set up or used machines that have been RAID capable, and it’s even more likely that you have set up a RAID yourself. Thus, I’ll cover only the basic aspects of RAID and its place within the network infrastructure. The simplest form of RAID is con?gured in software. When this type of Configuration occurs, mcsa certification the administrator uses multiple available drives and storage devices to combine available space into one (or multiple) logical drives for the purpose of storing large amounts of data over several volumes. Normally, a software RAID is used in situations where there is a large amount of non-mission-critical data space accessible over several drives that are not linked together in hardware. Using Windows Server 2008, administrators can easily put a RAID together through the use of Windows disk utilities. However, each disk used in the RAID must be con?gured as a dynamic disk. Once this is complete, disk utilities can store the software RAID data in either RAID 0, RAID 1, or RAID 5, which will be discussed later in this chapter.
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