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RAID Sticky?

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Pt3000

Limp Gawd
Joined
Apr 5, 2004
Messages
251
I'm interested in takeing the next step in some HD space on my system, gonna kick this 20GB to the curb, and looking into a RAID array...

can anyone point me to good RAID faq thread or site if they know of one, or if anyone wants to post some stuff in this thread by all means, ive been around comps for a while but no experiance with RAID so any info is apreacaited and lay it on thick, i can handle the jargon....

thanks
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welll....

the basics of RAID are best explained here:
http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci214332,00.html
http://www.solumedia.com/raidinfo.htm

These docs provide a decent overview as to what RAID is.

As to how it will affect you:

RAID 0 is one of the most common RAID formats. It involves 2 disks (min) and basically stripes data across both of them. For example: if you have a 2kb Word doc, it would put 1kb on disk1 and 1kb on disk2. Positives: usually faster writes/reads. Negatives: not failsafe...if one disk goes, you're screwed.

RAID 1 is another more common RAID type. it involves 2 disks (min) and basically mirrors the data of disk1 onto disk2. For example: if you have a 2kb Word doc, it would put the doc on disk1 and disk2. Positives: data is safe. Negatives: a little slower on the read/write front.

RAID 0 + 1 is another RAID type, but is a little funky in its implementation. A "real" RAID 0 + 1 array would have 4 disks (min) and be called a RAID 10 array. However, Intel has seen to it that you can essentialy stripe AND mirror using a basic 2 disk array. In any case, RAID 0 + 1 would look like this: disk1 + disk2 <=> disk3 + disk4. So, disk1 and disk2 would be striped and disk3 and 4 would be striped also. the disk1/2 array would be mirrored onto the disk3/4 array. Positives: combines data security with striping's access speed. Negatives: still not 100% failsafe.

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In any case, most of the people i know run RAID 0 arrays and the mainboards out there today allow for a simple setup of that. if you get into the enterprise space, you start seeing RAID 5 (mirroring, striping, w/parity) and RAID 10 (the more exotic version of 0 + 1.

let me know if you need any other help.

cheers,

dave

make sense?
 
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