Raid 0 & 1

Discussion in 'macOS' started by fab5freddy, Jan 21, 2008.

  1. fab5freddy macrumors 65816

    fab5freddy

    Joined:
    Jan 21, 2007
    Location:
    Heaven or Hell
    #1
    Can anyone explain to me what exactly
    RAID 0 & RAID 1 mean ...?

    thanks!!
     
  2. Mitthrawnuruodo Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #2
    Raid 0: Your data is distributed over two physical disks (which appears to be one large disk to your system). Offers (near) double speed and huge partitions. But it does have it's price: If one of the disks fails all your data is lost.

    Raid 1: All your data is written to both disks. Offers very nice secutity against data loss, since one failed disk may simply be replced, but at the cost of much redundancy (you can only use "half" the space you got).
     
  3. fab5freddy thread starter macrumors 65816

    fab5freddy

    Joined:
    Jan 21, 2007
    Location:
    Heaven or Hell
  4. edesignuk Moderator emeritus

    edesignuk

    Joined:
    Mar 25, 2002
    Location:
    London, England
    #4
    RAID 5 is a set of 3 disks or more. You lose the capacity of 1 disks worth of space when in a RAID 5 array. Data is written across all disks in the array, you can lose any 1 disk and not lose your data. You just replace the failed drive and the data is rebuilt based on what's on the other disks in the array.
     

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