Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-24 Thread Shmuel Metz (Seymour J.)
In
CAPD5F5qqQjHo2ntfWXUSP-GELMe=b1szP=4v5pm68-e1-1y...@mail.gmail.com,
on 05/22/2012
   at 10:22 AM, John Gilmore johnwgilmore0...@gmail.com said:

One-inch tapes were once very common in IBM shops,

Common?
 
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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-24 Thread Shmuel Metz (Seymour J.)
In
985915eee6984740ae93f8495c624c6c21e3656...@jscpcwexmaa1.bsg.ad.adp.com,
on 05/22/2012
   at 09:03 AM, Farley, Peter x23353 peter.far...@broadridge.com
said:

I don't know about IBM, but there was a 2nd generation Philco
computer system

I know about it, but I've never met anybody that used one.
 
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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-24 Thread Shmuel Metz (Seymour J.)
In 4fbb73d4.9090...@bremultibank.com.pl, on 05/22/2012
   at 01:09 PM, R.S. r.skoru...@bremultibank.com.pl said:

BTW: I heard about 1-inch tapes. Is it true? Did such wide tapes
exist?

Yes.
 
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 Shmuel (Seymour J.) Metz, SysProg and JOAT
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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-24 Thread Paul Gilmartin
On Wed, 23 May 2012 10:33:52 -0400, Shmuel Metz (Seymour J.)  wrote:

on 05/22/2012 at 10:22 AM, John Gilmore said:

One-inch tapes were once very common in IBM shops,

Common?
 
I had the impression they were rare (well, I never saw one).  And
expensive.  It wouldn't make economic sense to split them.  (Unless
you scored a truckload at an estate sale.)  And where would you get
empty 1/2 reels?  And how many feet of iron oxide, used otherwise
as an abrasive, would it take to ruin the edge of your pizza cutter?

-- gil

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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-22 Thread R.S.

BTW: I heard about 1-inch tapes. Is it true? Did such wide tapes exist?
Current cartridges are 1/2 inch wide. The article says that 729 was also 
1/2 inch.



--
Radoslaw Skorupka
Lodz, Poland





W dniu 2012-05-22 12:55, Don Higgins pisze:

All

It reminds me of when I saw my first tape sort running on what I think were IBM 
729 drives at Florida Power around 1970.  I knew I had to learn how that 
worked.  And now there is an open source sort merge utility included with z390. 
 It is written in structured mainframe macro assembler and runs on Windows, 
Linux, and Apple OSX using J2SE 6.0+ host.  But it is just no fun to watch 
anymore as it uses hard drive work areas!

Don Higgins
d...@higgins.net
www.z390.org

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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-22 Thread Farley, Peter x23353
I don't know about IBM, but there was a 2nd generation Philco computer system 
(1401-era for IBM) that used 1-inch wide tape.  My college used it for 
administrative functions back in the mid-1960's.

HTH

Peter

-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of 
R.S.
Sent: Tuesday, May 22, 2012 7:09 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: IBM's first tape drive turns 60 (makes you feel old!)

BTW: I heard about 1-inch tapes. Is it true? Did such wide tapes exist?
Current cartridges are 1/2 inch wide. The article says that 729 was also 
1/2 inch.
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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-22 Thread Paul Gilmartin
On Tue, 22 May 2012 13:09:08 +0200, R.S. wrote:

BTW: I heard about 1-inch tapes. Is it true? Did such wide tapes exist?
Current cartridges are 1/2 inch wide. The article says that 729 was also
1/2 inch.
 
http://www-03.ibm.com/ibm/history/exhibits/storage/storage_7340.html

... but can you trust a possibly biased source?

-- gil

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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-22 Thread Anne Lynn Wheeler
r.skoru...@bremultibank.com.pl (R.S.) writes:
 BTW: I heard about 1-inch tapes. Is it true? Did such wide tapes exist?
 Current cartridges are 1/2 inch wide. The article says that 729 was
 also 1/2 inch.

how do you feel about 3850
http://www-03.ibm.com/ibm/history/exhibits/storage/storage_3850.html
http://www.columbia.edu/cu/computinghistory/mss.html

cartridges (tape 4inches wide by 770inches)?
http://www-03.ibm.com/ibm/history/exhibits/storage/storage_PH3850B.html
http://en.wikipedia.org/wiki/IBM_3850
http://www.columbia.edu/cu/computinghistory/media.html

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Re: IBM's first tape drive turns 60 (makes you feel old!)

2012-05-22 Thread John Gilmore
One-inch tapes were once very common in IBM shops, and I will always
associate them with a diversion.

This width was of course incompatible with the half-inch one used for
acoustical recording, but the magnetic-tape medium itself was not; and
it was common, after regular business hours, to find computer-room
tape drives being used to slit a one-inch tape into two half-inch
ones.

One enterprising operator friend of mine--He later became a sysprog
who mostly lurks but sometimes posts here--even did a small business
in selling slitters adapted to this purpose.

John Gilmore, Ashland, MA 01721 - USA

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