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RAID

ahmedecho111
By ahmedecho111
in Storage Devices
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I spent $2500 on building my PC and all i do with it is play no games atm & watch anime at 1080p(finally) watch YT and write essays...  nothing, it just sits there collecting dust...

Builds:

The Toaster Project! Northern Bee!

 

The original LAN PC build log! (Old, dead and replaced by The Toaster Project & 5.0)

Spoiler

"Here is some advice that might have gotten lost somewhere along the way in your life. 

 

#1. Treat others as you would like to be treated.

#2. It's best to keep your mouth shut; and appear to be stupid, rather than open it and remove all doubt.

#3. There is nothing "wrong" with being wrong. Learning from a mistake can be more valuable than not making one in the first place.

 

Follow these simple rules in life, and I promise you, things magically get easier. " - MageTank 31-10-2016

 

 

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9 minutes ago, ahmedecho111 said:

Guys can anyone explain simply what is RAID 0? I heard this word several times but couldn't understand what it actually means...

Short answer...It's two drives pretending to be one drive and playing hot potato with your megabytes.

I am a paid professional, but only when I am at work...and getting paid.

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You have a hunk of cheese and want to eat it fast. You slice it up and put the slices on two plates. Now you can eat the cheese using two hands simultaneously. It takes you half the time to stuff it all in your mouth. 

 

Once you save in the RAID 0 array, the data is sliced up and saved onto the two drives. A slice at a time to both drives simultaneously. Since both drives get only half of the data, it takes half as long to save. The same is done in reverse then to read it. You take a slice from both drives at once and re-combine them back together in RAM to get your data back. Again, twice as fast.

 

This all theoretical. The speed doesn't scale up perfectly so it isn't actually twice as fast. But close to it. 

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8 minutes ago, Naeaes said:

You have a hunk of cheese and want to eat it fast. You slice it up and put the slices on two plates. Now you can eat the cheese using two hands simultaneously. It takes you half the time to stuff it all in your mouth. 

 

Once you save in the RAID 0 array, the data is sliced up and saved onto the two drives. A slice at a time to both drives simultaneously. Since both drives get only half of the data, it takes half as long to save. The same is done in reverse then to read it. You take a slice from both drives at once and re-combine them back together in RAM to get your data back. Again, twice as fast.

 

This all theoretical. The speed doesn't scale up perfectly so it isn't actually twice as fast. But close to it. 

So what's the actual use of raid 0?

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1 hour ago, ahmedecho111 said:

So what's the actual use of raid 0?

It speeds stuff up. Mechanical hard drives can transfer around 120MB/s. By using RAID 0 you can double that. Pretty basic stuff. The really sweet things start to happen when you set up a RAID 0 array with 550MB/s SSDs. You can easily get more than 1GB/s out of them. RAID 0 is just a cheap way to make the computer fast. The speed cant really compete with modern PCI-E SSD drives but it costs way less.

The caveat is that since neither drive has all the data, if either one fails, you lose all the data. That's why you should never store data in RAID 0 array for long periods. Stuff you can easily regain like your OS and games is just fine.  

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