On 09/16/10 09:18 AM, Edward Ned Harvey wrote:
From: Richard Elling [mailto:rich...@nexenta.com]

Suppose you want to ensure at least 99% efficiency of the drive.  At
most 1%
time wasted by seeking.
This is practically impossible on a HDD.  If you need this, use SSD.
Lately, Richard, you're saying some of the craziest illogical things I've
ever heard, about fragmentation and/or raid.

It is absolutely not difficult to avoid fragmentation on a spindle drive, at
the level I described.  Just keep plenty of empty space in your drive, and
you won't have a fragmentation problem.  (Except as required by COW.)  How
on earth do you conclude this is "practically impossible?"

Drives seek, there isn't a lot you can do to stop that.

--
Ian.

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