SQL Server Performance

DB in Simple recovery mode + disk setup

Discussion in 'Performance Tuning for Hardware Configurations' started by Argyle, Nov 7, 2003.

  1. Argyle New Member

    If you have 4 disks available (on a controller with 2 channels) and you know you will host databases that are in Simple Recovey mode only on the server (with a lot of reads and writes, 60% read 40% write) would you:

    1. Still seperate Data and Log on different channels as 2 x RAID1

    2. Or would you set it up as 1 x RAID0+1

    Currently this system is running on on single RAID1 and with a writelog waitstats percent of 73% causing a lot of CPU spikes.

    /Argyle
  2. satya Moderator

    I would go with option 1 which is an advantage on option 2.
    This reduces the CPU strikes and less disk queue length.

    _________
    Satya SKJ
    Moderator
    SQL-Server-Performance.Com
  3. Luis Martin Moderator

    If you presume in future don't have a space problem, I would go with option 1 too.

    Luis Martin

    ...Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.
    Bertrand Russell

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