MCITP Certificate Planning for Upgrades in an Existing Forest involves less burden

A hardware RAID is a RAID in which individual drives have been partitioned and seg- mented through the use of a hardware device, such as a RAID card, in such a way that the operating system or software recognizes them as one independent device, or a custom num- ber of independent devices, as determined by the setup of the administrator. The advantage of a hardware RAID is that it is faster, is more ef?cient, and involves less burden on the server to set up than software RAID. However, it is also much more expensive because it requires the purchase of dedicated hardware.

Using RAID, administrators can place data across multiple mcitp: server administrator volumes and create redundancy and fault tolerance in several ways. Within the enterprise, you are primarily concerned with the following types of RAID Configuration:
_N RAID 0
_N RAID 1
_N RAID 5
_N RAID 10 (1+0)

RAID 0, or striping, is the process of taking several disks and combining them into one large, maximum-speed disk. In the industry, RAID 0 is often referred to as ?just a bunch of disks.?This phrase is often used to describe it because RAID 0 provides no fault toler – ance, and thus it’s used only for data that is not mission critical and can be easily recovered. However, RAID 0 does have several important key bene?ts. First, RAID 0 is the fastest of all RAID types. Using RAID 0 you can achieve speeds of data input and output far greater than any other RAID Configuration. Second, RAID 0 is the easiest to set up.

More often than not, a lot of organizations use RAID 0 on a server that is critical to business when on a limited budget. This is because RAID 0, in combination with another technology such as tape backup, can provide an excellent means of cost-effective storage. Obviously, RAID 0 is supported in both hardware and software Configurations. How- ever, RAID 0 cannot be booted from in software Configuration. This is because the operating system as it boots has no idea where to find the drive with the existing NT loader. Thus, in order to trick the operating system into understanding RAID 0, a mcitp course hardware device is required.

RAID 1 is a type of RAID Configuration that in slang is referred to as mirroring. The pro- cess used with RAID 1 is a bit-for-bit copy that is exchanged from one drive to another. If a change is made to one drive, the change is matched to another drive that is a mirror image of it. This way, if one drive ever goes bad, you instantly have access to a direct copy of that drive to pick up where you last left off and recover back to your full operating potential. The disadvantages of RAID 1 are, first, that it’s slow and provides no methods for dataef?ciency, but more important, it also provides less access to space than you would nor-mally have with two separate drives. When using RAID 0, you would have access to twice the amount of data than you would with RAID 1, because for each individual drive that is used there is a completely separate drive that remains relatively inactive because it just cop- ies data.

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