RAID 0 +1
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Thread: RAID 0 +1

  1. #1
    Join Date
    Jan 2001
    Posts
    642
    hi,

    We have got about 10 drives(disks) and want to have the raid mechanism. People are talking of RAID 0 +1....,
    but what is RAID 0 + 1, and when do you use.

    Badrinath

  2. #2
    Join Date
    Apr 2000
    Location
    Edison, NJ
    Posts
    759
    RAID 0+1 is mirroring and striping of dbf
    -
    Consider RAID 0+1 to be a blend of the following:
    RAID-0. This technique has striping but no redundancy of data. It offers the best performance but no fault-tolerance.
    RAID-1. This type is also known as disk mirroring and consists of at least two drives that duplicate the storage of data. There is no striping. Read performance is improved since either disk can be read at the same time. Write performance is the same as for single disk storage. RAID-1 provides the best performance and the best fault-tolerance in a multi-user system.


    [Edited by Halo on 04-03-2001 at 03:10 PM]

  3. #3
    Join Date
    Mar 2001
    Posts
    1

    Unhappy

    RAID 0 + 1 means Disk mirroring and Striping. Mirroring is redundancy which will be useful in case there is a Disk controller failure. But if there is data corruption then the corrupted data will be there in both set of disks. Disk striping will be very useful if it is OLTP database.

  4. #4
    Join Date
    Aug 2000
    Posts
    462
    Raid Advisory Board (RAB):

    http://www.raid-advisory.com/

  5. #5
    Join Date
    Jun 2000
    Location
    Madrid, Spain
    Posts
    7,448
    0 is striping
    1 is mirroring

    http://www.acnc.com/04_00.html

    You have explanation from raid 0 to 10

  6. #6
    Join Date
    Nov 2000
    Location
    Baltimore, MD USA
    Posts
    1,339
    Excellent link pando!

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