Unfortunately, our bean counters started using 60K for $60,000.  When the
mainframe 3380 came out they decided to start counting disk in 1000s and
1000000s.  This has just perpetuated on for disk to make it easy for people
to calculate the space required because data records are measured in base 10
not base 2.  So, we are stuck with it.  TSM uses the open systems
calculation, 1024.

Paul D. Seay, Jr.
Technical Specialist
Naptheon Inc.
757-688-8180


-----Original Message-----
From: Hamish Marson [mailto:hamish AT TRAVELLINGKIWI DOT COM]
Sent: Friday, January 10, 2003 5:43 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Calculate 1 MB in TSM


Braich, Raminder wrote:

>I cannot imagine how people reach 1000 kb or 1000 mb figure. These are
>always calculated as 2 ^ x where x=0...infinity. I believe every
>calculation in software is done using the power of 2. 1000 could be
>used by sales as others suggested but how come they justify 1000 kb is
>bigger than 1024 kb !
>
>1 byte=8 bits
>1 KB = 1024 bits
>1 MB = 1024 KB = 1024*1024=1048576 bits
>1 GB = 1024 MB =1024*1048576=1073741824 bits
>
>

SInce you''re being pedantic, I think I will to (But then I like to anyway).
(Not CASE is very important)

 1 Byte = 8 bits
 1 kB = 1024 Bytes
 1 MB = 1024 kB = 1024 * 1024 Bytes
 1 GB = 1024 * 1024 * 1024 Bytes

m - milli
c - centi
d - deci (Not often used I admit)
k - kilo
M - Mega
G - Giga

b - bit
B - Byte

These are particularly important when you start swapping between serial
speeds (Usually quoted in bits) and Size (Usually quoted in Bytes). e.g.
EThernet is most commonly 100Mbps (100 Mega bits) while 100MB is 100 Mega
Bytes. 8* larger...

Hamish

>Raminder Braich
>
>-----Original Message-----
>From: J:rgen Opitz [mailto:Juergen.Opitz AT RIS DOT DE]
>Sent: Friday, January 10, 2003 11:23 AM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Calculate 1 MB in TSM
>
>
>Hello TSM'ers,
>
>can anyone tell me how TSM calculate 1MB? Is it 1000KB or 1024KB.
>
>Thanks in advance.
>J|rgen
>
>
>Mit freundlichen Gruessen
>
>Juergen Opitz
>Rheinmetall Informationssysteme GmbH
>- Competence Center Rechenzentrum -
>Alfred Pierburgstr. 1, 41460 Neuss
>
>Telefon:  02132/131269, Fax: 02131/5202681, Mobil:
>Mail: juergen.opitz AT ris DOT de
>http://www.ris.de
>
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