RAID 0, RAID 1, RAID 10 - All You Need to Know as Fast As Possible
Techquickie
https://www.youtube.com/watch?v=eE7Bfw9lFfs

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0:00 Welcome to TechQuy. Today we're going to tell you all you need to know about RAID zero, RAID one, and RAID 10 as fast as possible. You've probably seen reference
0:08 to RAID somewhere, but what does it mean? It stands for redundant array of inexpensive discs, and it basically means using multiple drives or discs to
0:17 achieve better performance andor better reliability. RAID zero is all about speed. It contributes nothing to reliability except to actually make it
0:26 worse. So it involves taking two drives or more and actually striping the data across all of the drives. This means you get to keep all of your capacity and you
0:36 get to have in theory with two drives double the read and write performance but in the event that one of the drives underos a hardware failure you will lose
0:44 all of the data that was stored on both of the drives. This configuration is only ideal if you're going to be doing very frequent backups or if you are
0:53 going for the most extreme performance possible, such as running multiple SSDs. RAID one is all about reliability. You get the capacity of one of your drives.
1:02 You get the performance of one of your drives, but you get the redundancy of two drives. That means if one of these two drives I have here fails outright,
1:11 all of the data will still be there. There's no performance overhead for running RAID one. You're still going to get the full performance of the drives,
1:18 but the more drives you add to a RAID one, you're always only going to get half the capacity that you would otherwise have. The advantage of RAID 1
1:26 is it's extremely safe. So, I would trust most important documents to a RAID one array. RAID 10 combines what's good about RAID zero and what's good about
1:34 RAID one into the same thing. So, you're taking four drives, you're striping these two and striping these two, then you're mirroring these two against these
1:42 two. So what that means is you get about double the performance of an individual drive. You get double the capacity of an individual drive, but you could lose up
1:51 to two drives in a RAID 10 array without losing any data. This is great where performance is needed, space is needed, but you don't necessarily want to invest
2:01 in an expensive RAID card solution like this one. There are types of RAID that we haven't covered in this episode, but we will
2:10 make another one. So there will be an annotation once that's done. You can go ahead and click on that to learn about them, but those are generally reserved
2:16 for more professional applications. If you are deploying some kind of a RAID configuration, I would definitely recommend posting in the linesttips.com
2:24 forum and asking for some help because RAID can be a little bit tricky to set up. Last but not least, RAID is not a substitution for backing up. Redundancy
2:32 is not the same thing as a backup. Even if you're running a RAID, you are still susceptible to things like viruses or accidental deletion or other human
2:40 error. So, make sure that you're doing regular backups. Thanks for checking out this episode of Fast as Possible. Make sure you
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