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Block size for RAID

  • 30-03-2006 8:06pm
    #1
    shayser
    Closed Accounts Posts: 1,650 ✭✭✭


    I'm setting up a RAID 5 system at the minute. Currently in the RAID BIOS. Need to set a block size. It's defaulted to 64kb. Will I leave it at that or change? It goes up to 2048.

    Also, at this stage does it make a difference if I initialise with Zero Build or No Build?

    EDIT: Looks like Zero Build... No Build is if it's been zeroed already (I think).


Comments

  • #2
    SickBoy
    Registered Users, Registered Users 2 Posts: 3,537 ✭✭✭SickBoy


    Smaller block sizes are more efficient when it comes to allocating space to files.
    For example, if the block size was 64k a file of 65k would use 128k of drive space because it would require 2 blocks. But if you were to store that same file on a 4k block size then you'd only require 68k(17 blocks).
    Larger block sizes give better transfer rates but you sacrafice drive space somewhat.
    If you're going to be working with big files then pick the largest available block size. If you're going to be working with a lot of small text files or the like then a smaller block size is required.


  • #3
    shayser
    Closed Accounts Posts: 1,650 ✭✭✭shayser


    Thanks man. Nicely explained.


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