Re: defrag on linux system

From: Christopher Browne (cbbrowne_at_acm.org)
Date: 09/13/05

  • Next message: Peter T. Breuer: "Re: defrag on linux system" 
    Date: Tue, 13 Sep 2005 15:08:46 GMT

    > Kasper Dupont wrote:
    >> Michel Bardiaux wrote:
    >>
    >>>I have similar problems with disks holding realtime compressed video.
    >>>Old files are perpetually destroyed to make room for new ones while
    >>>keeping the disk 99% full, and that seems to be one of those rare cases
    >>>where fragmentation *does* grow with time.
    >> True, this is the main reason why ext2 and ext3 by default
    >> reserve 5% of the disk space.
    >
    > Believe me, 5% of a 4Tbytes RAID causes some raised eyebrows when
    > discussing volumes... and budgets!

    Why should this raise eyebrows?

    5% of a 4TB RAID represents one 200GB disk drive; perhaps $200 worth
    of disk space.

    In a well-managed RAID environment, you already need to budget to have
    a bunch of spare drives on hand; one extra drive doesn't strike me as
    being a material matter. 

    -- 
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