Re: RAID Sizes (was Re: Why do people in the UK put a u in the word color?)
Matus UHLAR - fantomas <uhlar@fantomas.sk> wrote:
> On 16.04.06 22:56, Willie Wonka wrote:
> > Explained another way (hopefully);
> > If you bought a 1,000 Byte (1KB) HDD - you'd lose 24 *Bytes*
>
> No. The big 'K' stands for 1024, 1000 is small 'k'.
> The big 'K' was chosen exactly to differ 1024 from 1000 - small 'k'.
>
> But this can't be applied for 'M' because big 'M' is 1 000 000, while smal
> 'm' is 0.001 (1/1000).
>
> > If you bought a 1,000,000 Byte (1MB) HDD - you'd lose 48 *KiloBytes*
> > If you bought a 1,000,000,000 Byte (1GB) HDD - you'd lose 73
> > *MegaBytes*
> > If you bought a 1,000,000,000,000 Byte (1TB) HDD - you'd lose 99
> > *GigaBytes*
>
> Luckily, HDD manufacturers count with KB/KiB (1024B)'s, so 10GB HDD was
> counted as 1 000 000 KB - 1 024 000 000 Bytes. This was because HDD's use
> 512B sectors, and it's easier to divide number of sectors by 2 than to
> multiply it by 512.
No they don't. This is what fdisk reports for my 20 GB HDD:
Disk /dev/hda: 20.0 GB, 20003880960 bytes
240 heads, 63 sectors/track, 2584 cylinders
Regards
Andrei
--
If you can't explain it simply, you don't understand it well enough.
(Albert Einstein)
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