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What is RAID

M

mik33

n00b
Joined
Oct 13, 2005
Messages
5
Howdy folks first off I want to say I'm not sure if this is posted in the right place because I don't really know what RAID is. So if someone could enlighten me to what it is or at least point me in the right direction of where to post I'd really appreciate it.
 
search for your thread title in the disk storage systems forum, you'll find a few threads
 
Slartibartfast said:
search for your thread title in the disk storage systems forum, you'll find a few threads
Click to expand...
Depends on what he means... The OS does software RAID. Technet

From the link there is also a good description of the main RAID types.
Striped volumes use RAID-0, which stripes data across multiple disks. RAID-0 does not offer fault tolerance, but it does offer increased performance.

Mirrored volumes use RAID-1, which provides redundancy by creating two identical copies of a volume.

RAID-5 volumes use RAID-5, which stripes parity information across multiple disks. This parity information can be used to recreate data stored on a failed disk.

Also, wiki is very cool, but be careful using it as fact. It is an open DB prone to poisioning.
 
Slartibartfast said:
search for your thread title in the disk storage systems forum, you'll find a few threads
Click to expand...
Doing a google search for it is a good idea as well. I know very few pople actually bother researching something themselves anymore, but you will find more good explanations this way than you'd ever have time to read.
 
RAID 0= pain in the a$$.. oops I just lost all my data for fast benchmark scores and little to no performance gains in normal every day use.. Thank god I made a ghost backup to DVD.. Uhhh, I forgot to ghost the drive, I am just soooo screwed ;)
 
GORANKAR said:
RAID 0= pain in the a$$.. oops I just lost all my data for fast benchmark scores and little to no performance gains in normal every day use.. Thank god I made a ghost backup to DVD.. Uhhh, I forgot to ghost the drive, I am just soooo screwed ;)
Click to expand...
So true, but yet people will still argue, regardless of the facts.
 
Think i'm going to buy a 16MB seagate for windows and games and then, buy a few 250GB random drives for JBOD.
 
Raid-0 is pretty much setting yourself up for failure. I don't see why people do it.

Raid-1 is nice for people who are paranoid about losing data and don't mind spending 2x for the same amount of storage to do it.

Everything else is pretty much overkill for normal desktop PC use
 
Geez all this time I thought raid was a bug spray killer you mean raid is for computers also hahahahahahahahahhahaha
 
I love RAID 0. It feels quicker to me, and I don't care if I lose data, ill install again. I almost thought I would have to once when messing w/ my SATA options in my BIOS, but a fixMBR in windows repair solved it.
 
Standpoint said:
I love RAID 0. It feels quicker to me, and I don't care if I lose data, ill install again. I almost thought I would have to once when messing w/ my SATA options in my BIOS, but a fixMBR in windows repair solved it.
Click to expand...
Today's winner of the Placebo Effect Award!
 
Heres the sarcastic answer: A bug spray.

Edit - Im a few posts late and a dollar short......... last time I try to be funny. :rolleyes:
 
RAID 0 ONLY increases write speeds for large files. It slows down everything else. You have to look for real world benchmarks, not synthetic, when researching RAID 0.

Even so I decided to setup RAID0 on my computer so that I could do real world benchmarks for some folks. The conclusion, it's slower. WoW load times are 3 seconds slower. System boot is painfullly slow.
However when transfer my entire music library from an external drive to my PC it did go faster. Though nothing to write home about.

Then I ditched the RAID 0 and went back to a single drive. And immediately noticed a speed increase.
 
Standpoint said:
I love RAID 0. It feels quicker to me, and I don't care if I lose data, ill install again. I almost thought I would have to once when messing w/ my SATA options in my BIOS, but a fixMBR in windows repair solved it.
Click to expand...

Best of luck to you.

Back in 2001 when RAID 0 was all the craze, you may have been hip... but these days, RAID 0 is just asking for trouble.

But anyways, I love RAID 5 :D
 
I have four drives, Raptors RAID 0 on OS and program partitions, RAID 1 on data partition. Keep all important files on data partition. And it is quicker at certain things, most notably system bootup. Quicker at nearly all level loads as well, but only noticeable on paper. Slower? Maybe if you are using a consumer level controller from the 90's.

I don't get all the RAID 0 hate. If I lose a drive all I lose is the time it takes to reinstall the OS and Programs. Yeah, if you don't have the cash to build up some place to store your important stuff you're best off not risking it.
 
djnes said:
Today's winner of the Placebo Effect Award!
Click to expand...
To be fair, it's not complete placebo, it just isn't worth the cost/performance on a desktop PC, then factor in the costs of increased failure rates....

There are exceptions to that rule however, gaming isn't on that list (main reason why people do RAID-0 around here).
 
Does any one know of links to benchmarking of Raid 0 compared to a single drive? I would liek to compare the data. I just set up my new system and I have 2 SATA drives in a RAID 0 configuration. It seems a hell of a lot faster to me, but im also coming from a 7200rpm IDE drive. But if any one knows of some links i would be intrested in seeing them.


As far as loseing your data, I my self format my system at least once a month. I make it easy on my self though and have a ghost image of my drives. When I do a fresh install I update all the drivers, windowsupdate ect ect and burn it again. Makes a persons life a lot easier.
 
AcidTone said:
Does any one know of links to benchmarking of Raid 0 compared to a single drive? I would liek to compare the data. I just set up my new system and I have 2 SATA drives in a RAID 0 configuration. It seems a hell of a lot faster to me, but im also coming from a 7200rpm IDE drive. But if any one knows of some links i would be intrested in seeing them.
Click to expand...
AnandTech
This is the most commonly referred to document.
 
There were more, but many were taking offline a while ago. Once the myth was debunked, it pretty much died off...everywhere but this subforum, unfortunately.
 
AcidTone said:
Does any one know of links to benchmarking of Raid 0 compared to a single drive?
Click to expand...

Sure. In this post of this thread, I provide the results of a program I wrote to compare random access times of varying sizes and lengths between single drives and a RAID 0 pair. I ran the test on two different motherboards, and RAID 0 access was faster on both motherboards -- even for shorter block lengths.

I wrote the test because I had wanted to investigate the popular assertion that RAID 0 was "worse for smaller file transfers", and because the popular benchmark sites didn't provide a test suite that was reusable by their readers.
 
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