Re: RAID Sizes (was Re: Why do people in the UK put a u in the word color?)
On Sat, 2006-04-15 at 06:30 -0400, hendrik@topoi.pooq.com wrote:
> On Sat, Apr 15, 2006 at 10:25:28AM +0100, Wulfy wrote:
> > CaT wrote:
> > >Because dividing by a multpile of 10 essentially simply moves the
> > >decimal point to the left. The thing that's not bleedingly obvious
> > >there though is that 156290816 is in kibibytes. :) So:
> > >
> > >156290816 * 1024 / 1000 / 1000 / 1000 ~= 160.04 GB :)
> > >
> > >Similar for 468872448.
> > If it's decimal, what's that "1024" doing there and why the odd number
> > "156290816" for a "Kibibyte"? Surely they should ALL be powers of 10?
> >
> > Seems a tad inconsistent to me...
> >
> > Besides... 1024 is "decimal"... 2^10!!! :?
>
> because the sizes are measured in blocks originally, and a block is 1024
> bytes, which is one KiB but 1.024 KB.
Sectors are 512 bytes, and blocks (on hard disks) are typically
4096 bytes (but that's determined when you format the partition,
and is determined at run-time).
--
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Ron Johnson, Jr.
Jefferson, LA USA
"Early to bed, early to rise, work like hell and advertise."
-Ted Turner
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