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Thread: Raid

  1. August 8th, 2003, 06:56 PM #1
    Orangemon1
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    Raid

    Which raid setup gives best performance. Is is it striped or mirrored?
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  2. August 8th, 2003, 07:03 PM #2
    silencio
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    Nice table here.
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  3. August 8th, 2003, 11:19 PM #3
    Ya_know
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    Striped (RAID0) yields the best performance, mirrored is more for fault tolerance. However RAID 1 (Mirrored) is faster than RAID5 (Striped with parity). There is a lot of overhead involved with RAID5.
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  4. August 9th, 2003, 04:09 AM #4
    silencio
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    Originally posted by Ya_know
    Striped (RAID0) yields the best performance, mirrored is more for fault tolerance. However RAID 1 (Mirrored) is faster than RAID5 (Striped with parity). There is a lot of overhead involved with RAID5.
    That used to be true. If you have the cash and are going to go with your choice, go with RAID 0+1.
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  5. August 9th, 2003, 06:40 AM #5
    confus-ed
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    Re: Raid

    Originally posted by Orangemon1
    Which raid setup gives best performance. Is is it striped or mirrored?
    Sriped !

    Mirrored is where you duplicate info on a second disk ... in striped you put 1/2 of each 'write' on each disk (assuming two disks, or 1/3 if three ... etc)

    BTW 'RAID 0' isn't raid at all ! ... RAID =Redundant array of Independant disks, but it was originally used to represent Redundant array of Inexpensive disks ... A tue RAID should provide redundancy ... by simply striping data you might be speeding up access but you ain't got no redundancy ... Should never be used in mission critical environments
    one disk 'fails' & the entire array is screwed !

    Here's another link with RAID explained
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