doc2142

So i just got 2x 500GB seagates from a ocner here. Now i want to raid them and i know i have to reformat to so.

1. My question is, whats Raid 0 and raid 1?
2. which one is better for me. My optical drive is IDE will this cause any problems?
3. I have a 3rd hard drive which what i am using right its sata. Can i use it to store backs? with out causing any problems with the raid 0?

ericeod

1. Raid 0 splits the dayta between 2 drives for performance increase (stripping) Raid 1 copies the data to both drives so that you have a backup. it is used for data integrity, and often used by businesses. There is no performance gain, only data integrity.

2. Raid 0 is the most common choice because of the performance increase. The IDE optical drive will have no impact on the RAID setup.

3. You can use an additional HDD for storage. I recommend disconnecting the drive while installing the OS, then connecting it and setting up the drive for storage after the OS has been installed.

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desertmonk

Basically:

Raid 0 - twice the read/write speed. same access time. twice the size (2x500GB = one 1000GB drive) twice the chance of losing all your data

RAID 1 - same read/write/access time/speed as a single drive. same size (2x500GB = 500GB) half the chance of losing all your data.

0 combines two drives for speed, 1 combines two drives to make a real-time backup as you go.




EDIT: FFFFAAAAARRRKKKKK. Always beaten to it on this forum...



you can use another SATA drive as a mnual backup and an IDE DVD drive no problem.

Since you have a spare SATA drive, I vote RAID 0 for speed and then use the current SATA drive for manual backups.

ericeod

When you say twice the chance, it is a small number, like .03%. But the OP has a 3rd drive for storage, so it isnt an issue as you pointed out already.

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bomfunk

1. Raid 0 is interleaved - the discs will appear as one big disc, and the data (and therefore load) is spread across for higher performance. If one of the discs fail, tohugh, your entire array and all data is gone. Raid 1 is where the contents of the discs are cloned for redundancy, so if on disc fails, you still have all your data safe and sound.

2. Which one is better depends on what you're after - RAID 0 for pure performance, RAID1 for reliability and backup. And no, the IDE drive shouldn't interfere in any way.

3.Yea, you can have additional HDDs independent from your HD array.

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doc2142

I thought when you Raid 0 2x 500GBS you only get 500GB total space...

bomfunk

No, that's when you RAID 1. Raid 0 combines the capacity of the discs in the array.

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Dilyn

Is there such a thing as RAID 0+1?

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ericeod

Yes, it is called Raid 10, and requires a dedicated RAID card with it's own processor and ram to be efficient. You would want one of the ever popular Perc5i or 6i cards for something like that.

I usually dont post to wikipedia, but their RAID level definitions are accurate:

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

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doc2142

Nice i thought i will only have 500GB which i didn't care but 1TB is also very nice!

Thanks guys i will need help though on how to set up, is there an easy guide i can follow?