Greg Stigers wrote after Howard Hoxsie wrote:

Etc.? I keep wondering the name of the unit of measure for 1024 TB is.
After trillion is quadrillion, so quaderabyte? Quadrega?

> -----Original Message-----
> From: Howard Hoxsie [SMTP:[log in to unmask]]
> Sent: Thursday, August 20, 1998 1:36 PM
> To:   [log in to unmask]
> Subject:      Re: [HP3000-L] SECTORS/GIG
>
> There are 256 bytes per sector, or 4 sector per k, 4k-sectors per meg,
> 4m-sectors per gig, etc...

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Below is a table explaining "powers of 2 and 10" and their names:

Base 2                                                            Base 10
2^10     kilobyte                                              10^3
(thousand)

2^20     megabyte(greek for great or large)       10^6  (million)

2^30     gigabyte(greek for giant)                      10^9  (billion)

2^40     terabyte(greek for monster)                 10^12 (trillion)
             "tetra" is four(4) in greek and there was a group that
             believed and had the influence to dictate that tera came
             from tetra and the third letter had been dropped, therefore
             the next name would be "penta(5 in greek)" and the third
             letter dropped, hence "peta". This is also the point at which
             the base 2 and base 10 "names" diverge, "peta" is five and
             "quad" is four(since this is based on the number of times
             a thousand is multiplied by itself for base 10).

2^50     petabyte(greek for five(5))                    10^15(quadrillion)
             with the third letter dropped.

2^60     exabyte(greek for six(6))                       10^18(quintillion)
             estimated to be a value greater than
             all the words spoken by all people since
             speech originated.

2^70     zettabyte(at this point the same             10^21(sextillion)
            goverining body decided that future
            powers of 2 would be based on the
            latin alphabet going backwards).

2^80    yottabyte(the next letter backwards in      10^24(septillion)
            the latin alphabet).

2^90     No known use for this yet                       10^27(octillion)

Base 2 and base 10 really have nothing to do with each other except
for the fact we are used to expressing ourselves in base 10 and try
to relate other base number systems to it.


                                   Eric Sand
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