which raid for storage ?

Discussion in 'Linux & BSD' started by Dark Atheist, Jan 23, 2008.

  1. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    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
     
    Last edited: Jan 23, 2008
  2. LordOfLA

    LordOfLA Godlike!

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

    Dark Atheist Moderator Political User Folding Team

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    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
     
  4. fitz

    fitz Just Floating Along Staff Member Political User Folding Team

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    Didn't I mention this to you way back when you were first talking about this?


    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).
     
  5. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    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 ?
     
  6. fitz

    fitz Just Floating Along Staff Member Political User Folding Team

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  7. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    i do have 4 drives - just not all the same size :p
     
  8. LordOfLA

    LordOfLA Godlike!

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    they need to be the same size :)
     
  9. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    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. LordOfLA

    LordOfLA Godlike!

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    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)
     
  11. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    lose 80gb!!! i think not might just set fire to the bloody thing