>>>>> "dd" == David Dyer-Bennet <d...@dd-b.net> writes:

    dd> Sure, if only a single thread is ever writing to the disk
    dd> store at a time.

video warehousing is a reasonable use case that will have small
numbers of sequential readers and writers to large files.  virtual
tape library is another obviously similar one.  basically, things
which used to be stored on tape.  which are not uncommon.  

AIUI ZFS does not have a fragmentation problem for these cases unless
you fill past 96%, though I've been trying to keep my pool below 80%
because <general FUD>.

    dd> This situation doesn't exist with any kind of enterprise disk
    dd> appliance, though; there are always multiple users doing
    dd> stuff.

the point's relevant, but I'm starting to tune out every time I hear
the word ``enterprise.''  seems it often decodes to: 

 (1) ``fat sacks and no clue,'' or 

 (2) ``i can't hear you i can't hear you i have one big hammer in my
     toolchest and one quick answer to all questions, and everything's
     perfect! perfect, I say.  unless you're offering an even bigger
     hammer I can swap for this one, I don't want to hear it,'' or

 (3) ``However of course I agree that hammers come in different
     colors, and a wise and experienced craftsman will always choose
     the color of his hammer based on the color of the nail he's
     hitting, because the interface between hammers and nails doesn't
     work well otherwise.  We all know here how to match hammer and
     nail colors, but I don't want to discuss that at all because it's
     a private decision to make between you and your salesdroid.  

     ``However, in this forum here we talk about GREEN NAILS ONLY.  If
     you are hitting green nails with red hammers and finding they go
     into the wood anyway then you are being very unprofessional
     because that nail might have been a bank transaction. --posted
     from opensolaris.org''

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