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post #11 of 38
Thread Starter 
Quote:
Originally Posted by The_Rocker View Post
Get two 500GB Barracuda's or Western Digital AAKS drives and put them in RAID 0. Then you can partition as you see fit.

The speed will destroy what you currently have.

Failures rates.... pfft... I have never had my RAID 0 fail, I have even uplugged one of teh drives whilst in windows. All it did was freeze and work fine again once I plugged it back in.


Just back up your data.
Hey,

How much storage do you actually get then from 2x500GB, doesn't a RAID config affect the storage in someway?
    
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post #12 of 38
Quote:
Originally Posted by jpmad4it View Post
Can I ask what HDD's you have in your RAID config's?
I have two 160gb Seagate drives in RAID0

and

two 400gb drives Hitachi and Western Digital 400gb drives in RAID1.
post #13 of 38
Thread Starter 
Quote:
Originally Posted by alex98uk View Post
I have two 160gb Seagate drives in RAID0

and

two 400gb drives Hitachi and Western Digital 400gb drives in RAID1.
So in theory you have 320GB RAID0 and 1.6TB (1600GB) on RAID1??

how much actual storage does that give you on each RAID?
    
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post #14 of 38
Quote:
Originally Posted by jpmad4it View Post
So in theory you have 320GB RAID0 and 1.6TB (1600GB) on RAID1??

how much actual storage does that give you on each RAID?
You're correct i have 320gb in RAID0 (160x2=320)

However, in RAID1 the disks mirror each other so you have half the space. So, even though i have two 400gb disks, i only have 400gb space since both are an exact copy of each other.

So, total, i have 720gb space.
post #15 of 38
Thread Starter 
Ah ok, so if I bought 3x500GB and used RAID0 then I would actually have 1,500GB's?

And should I really be concerned about data loss using RAID0, or is it very reliable?
    
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post #16 of 38
Well, for each new disk you add to a RAID0 array, the chance of failure multiplies because all it takes is for one disk to go and then the entire RAID is broke.

If i were you, buy 4x500gb or cheaper, 4x320gb and run a RAID10 array. Then you get the speed benefit of RAID0 with the reliability of RAID1. But, remember because half the disks are in RAID1, you'll get 640gb space.
post #17 of 38
Thread Starter 
Quote:
Originally Posted by alex98uk View Post
Well, for each new disk you add to a RAID0 array, the chance of failure multiplies because all it takes is for one disk to go and then the entire RAID is broke.

If i were you, buy 4x500gb or cheaper, 4x320gb and run a RAID10 array. Then you get the speed benefit of RAID0 with the reliability of RAID1. But, remember because half the disks are in RAID1, you'll get 640gb space.
Ok little confused lol. Is this correct:

So 4x500GB in RAID0 = 2TB's
4x320GB RAID1 = 640GB

So total 2,640GB?

Or am I talking rubbish here lol!
    
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post #18 of 38
Okay RAID1 is mirrored. So if you have two 500gb disks in RAID1 the total capacity would be 500gb

This is because the contents on each disk is exactly the same. When you copy a file to your RAID 1 array, the file is written to both hard disks.



As you can see, disk #1 is an exact copy of disk #2. So, even though you have two 500gb disks, they contain exactly the same data, so in effect, you only have 500gb space.

RAID0 is where the data is where data is spread across two disks. So, you have two 500gb disks in RAID0. If you copy a file to the RAID0 array, half of it will be written to disk #1 and the other half to disk #2. So, when you go to read or execute that file, it reads half the data off one disk and half off the other. So, each disk only needs to read half the data as the other disk holds the other half. Therefore, the read time on each disk is theoretically halved (in reality it's not though). This is why RAID0 achieves faster read/write speeds.

RAID10 combines the two arrays. The two RAID1 disks have an exact copy of the two RAID0 disks giving you speed and redundancy. So, four 500gb disks in RAID10 would give you a total of 1tb space.

That took me ages to type out. I better get some damn rep lol.
post #19 of 38
Thread Starter 
Quote:
Originally Posted by alex98uk View Post
Okay RAID1 is mirrored. So if you have two 500gb disks in RAID1 the total capacity would be 500gb

This is because the contents on each disk is exactly the same. When you copy a file to your RAID 1 array, the file is written to both hard disks.



As you can see, disk #1 is an exact copy of disk #2. So, even though you have two 500gb disks, they contain exactly the same data, so in effect, you only have 500gb space.

RAID0 is where the data is where data is spread across two disks. So, you have two 500gb disks in RAID0. If you copy a file to the RAID0 array, half of it will be written to disk #1 and the other half to disk #2. So, when you go to read or execute that file, it reads half the data off one disk and half off the other. So, each disk only needs to read half the data as the other disk holds the other half. Therefore, the read time on each disk is theoretically halved (in reality it's not though). This is why RAID0 achieves faster read/write speeds.

RAID10 combines the two arrays. The two RAID1 disks have an exact copy of the two RAID0 disks giving you speed and redundancy. So, four 500gb disks in RAID10 would give you a total of 1tb space.

That took me ages to type out. I better get some damn rep lol.
Awsome!

So thats what the lecturer at university all those years back was trying to explain lol!!!!

Made it crystal clear now
    
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post #20 of 38
Thats great lol.

RAID 0 for performance, RAID 1 for redundancy, there are other RAIDS but they are way harder to explain.

For like one or two years the data you have in a RAID 0 with two identical hard drives (purchased at same time) would still be safe. Its only after a couple years that one may fail (assuming you got decent hard drives), and by that stage it would've meant that you need to get a few new hard drives.
    
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