RAID. What is it? Do I need?

If you've seen the term RAID at the command of a PC or the implementation of a (BIOS/specs etc options) you can have you wondered what it is. Over the years, I have had a few people ask me about this. RAID can be very useful to your needs. Let's start with the definition of RAID and a brief overview.

RAID - is an acronym for Redundant Array of inexpensive (or independent) disks. RAID is available in several flavors, but I will cover 2 of the simplest and most widely used. RAID 0 and RAID 1.

To use raid functions, it takes two or more similar drives. As two HDDs in 120gig. It really does not matter the size as long as they are similar. Two of the same kind, so to speak. If I had to use a 80 and 120 I would be left with little unused space. To do that make sense, I must explain RAID still more. The two versions that I mention here are 0 and 1. Which are also called Striping (0) and mirroring (1).

Interleaving uses two or more similar disks break down data and divide it into two. A single player and the other half to the other half. This means that you get the advantage of read and write to both drives at the same time. This can actually double the speed of read/write on your hard drive. Very good for the large file transfers video/image editing. But this speed has a bit of a cost. Specifically a risk factor. There is no '' parity '' in RAID 0 (Striping). That means really just catastrophic failure you may lose all those of you data. However if save you elsewhere regularly (we ALWAYS SUGGEST ) this data loss becomes just a waste of time spent on the recovery of your data. Very fast - a bit of a risk without a backup.

Put mirror uses two or more similar drives to maintain a constant backup of the main drive. The same exact data exist as a 1:1 disk each copy. Some note that this can increase the readings of a hard drive, making certain data-intensive to load faster, but don't expect too much. The primary pro this is redundancy. I have a ton of pictures of family and videos or tax info etc. - or even business data that I can't go long without. Extract a compressed backup and offsite data, it's just not what I want. RAID 1 (Mirroring) is right to the top of the alley. If the first drive fails or data too damaged by the age etc. the secondary drive is a direct copy of mirroring and can be exchanged in any time. It's a bit like the ultimate backup - failed disk - drive major change reboot disk mirrored - keep trucking. Pretty cool huh?

Do I need this?

You must first readers available. There are several ways to do this (almost any laptop / desktop can be configured with several player - although sometimes the minor sacrifice) but the chances are that you are fine with the configuration of you, but if you may qualify for an extra speed (plays video/image editing etc.) or addition of redundancy (backup/provident/availability/fault protection of hardware failure) may want to look more closely at the raid. There are certainly more options out there beyond a few 0 or 1 (0 + 1-2 disks stripped for speed and direction reverse, 2, more backup disks). If you are interested in this wiki link to give it a read and see what would have worked for you :

http://en.Wikipedia.org/wiki/RAID

Let us know if you have any questions, comments, or concerns!

Tags: Notebooks

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