[HPADM] Disk Mirroring Performance

From: Justin Willoughby (jwilloug_at_mhc.net)
Date: 08/18/04

  • Next message: Bodnar, George: "[HPADM] high run queue on a single CPU on multi CPU system" 
    To: <hpux-admin@dutchworks.nl>
Date: Wed, 18 Aug 2004 13:15:46 -0400

    I looked on the HPUX-Admin archive and hp itrc but have not found what
    I am looking for.

    I am going to be mirroring at the OS level an application VG between
    two separate fiber channel arrays. What I would like to know is how does
    HPUX/LVM know which array/disk to read from? I would assume it does a
    write to each array/disk at the same time but when it reads I am guess
    it only reads from one of the arrays.

    I am just trying to figure out if I am going to see any performance
    gains if my application does more reads then writes.

    Thanks,

    - Justin

    ==================
     Justin Willoughby
     Computer Operations
    ================== 

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