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which raid for storage ?

Dark Atheist

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#1
i have 2X200GB and 2X160GB hard drives which atm are setup as a raid0 arry, after doing some reading i have found that this isn't the best setup as a single disc failure could wipe out the whole 650GB!!!!

would i be best off leaving it as raid0 and making sure i have everything backed up, or should i move it to a raid1 setup, i know using raid1 will only give me half the space, but will give me redundancy.

Although it shows as 650GB is not its about 613GB so i will only get 307GB, which i will use to store some of the backed up dvds i have been doing

Edit: after looking at what i have on here, i dont think 300gb will be enough :( , think it might be a wiser idea to have them all as separate drives
 
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Dark Atheist

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#3
to be honest i dont have a clue what the board in there can really do - i know raid0 and raid1, but in what combinations im not sure, is an old board
 

fitz

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#4
after doing some reading i have found that this isn't the best setup as a single disc failure could wipe out the whole 650GB!!!!
Didn't I mention this to you way back when you were first talking about this?

Fast: RAID0 2+ disks
Safe: Raid 1 or Raid 1+0 2+ or 4+disks
Safest: RAID5. 3+ disks.

Actually, a RAID 1+0 could be considered safer than a RAID5.. and don't forget about RAID6 which would be safer than a RAID5 as well. Both would allow for double disk failure (assuming your RAID controller does RAID 1+0 right, if you had a big enough RAID10 array, you could actually suffer multiple disk failures and still be humming along).
 

Dark Atheist

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#5
think you did but the board is old and limited in what it can do (also my memory is shot and the tabs dont help im on) - board is a asus p4c800E deluxe, after looking in the manual - take ages to find it, it says it can do raid0 raid1 and raid0+1.

So im guessing the raid0+1 is the better option mirror/stripe ?
 

Dark Atheist

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#9
well way i have them in freebsd atm they don't - X helped me concat them and stuff, also some one did say to make it a raid1 but concat 1 of the 200gb and one of the 160gb drives, i might just say f**k it to be honest and have them all as separate drives
 
#10
if you make the array with the 160's as the primary disks, you can mirror them to larger disks. You just loose the extra space.

However that makes you a RAID0+1 which is not as fault tollerant as 1+0 (stripped mirror, vs mirrored stripe)
 

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