17 Apr
2014
17 Apr
'14
9:32 a.m.
Hi all!
I've seen several tape reel cases on eBay like the following:
http://www.ebay.com/itm/3-VINTAGE-IBM-MAGNETIC-TAPE-DATA-PROCESSING-PLASTIC…
Does anyone know, are those circa System/360, or are they from the 7090 era? I'm
suspecting they predate the 360, but it's hard to tell...
Thanks much, as always!
-Ben
17 Apr
17 Apr
10:25 a.m.
On 4/17/14 9:32 AM, Benjamin Huntsman wrote:
Does anyone know, are those circa System/360, or
are they from the 7090 era?
Most of the containers I've seen prior to the 360 are black instead of blue.
The other way to tell is the supported density. 9 track tapes are all 360 era.
800bpi 7 track was the highest density IBM used on machines like the 1401 or 7090.
If a tape is rated at 556 bpi, for example, it probably started out on earlier
machines. 7 track drives, of course, were available as options on the 360 for data
migration.
11:04 a.m.
On 17/04/2014 18:25, Al Kossow wrote:
On 4/17/14 9:32 AM, Benjamin Huntsman wrote:
These are just canisters so no density. Frankly the same canisters were
used even into the 370 era, though by that time self loading drivers
were common and most tapes came in normal or self load collars. These
look like System/360 but its hard to be certain...
Dave
Does anyone know, are those circa System/360,
or are they from
the 7090 era?
Most of the containers I've seen prior to the 360 are black instead of
blue.
The other way to tell is the supported density. 9 track tapes are all
360 era.
800bpi 7 track was the highest density IBM used on machines like the
1401 or 7090.
If a tape is rated at 556 bpi, for example, it probably started out on
earlier
machines. 7 track drives, of course, were available as options on the
360 for data
migration.
11:16 a.m.
On 4/17/2014 12:04 PM, Dave wrote:
On 17/04/2014 18:25, Al Kossow wrote:
Stock up now ... You never know when you need to send that station wagon
of tapes somewhere. :)
On 4/17/14 9:32 AM, Benjamin Huntsman wrote:
These are just canisters so no density. Frankly the same canisters were
used even into the 370 era, though by that time self loading drivers
were common and most tapes came in normal or self load collars. These
look like System/360 but its hard to be certain...
Dave
Does anyone know, are those circa System/360,
or are they from
the 7090 era?
Most of the containers I've seen prior to the 360 are black instead of
blue.
The other way to tell is the supported density. 9 track tapes are all
360 era.
800bpi 7 track was the highest density IBM used on machines like the
1401 or 7090.
If a tape is rated at 556 bpi, for example, it probably started out on
earlier
machines. 7 track drives, of course, were available as options on the
360 for data
migration.
12:35 p.m.
Autoload rings never left the Computer Center, too expensive. If a tape was
checked out we put it in a canister.
Lee C.
On Thu, Apr 17, 2014 at 11:16 AM, ben <bfranchuk at jetnet.ab.ca> wrote:
On 4/17/2014 12:04 PM, Dave wrote:
--
Lee Courtney
+1-650-704-3934 cell
On 17/04/2014 18:25, Al Kossow wrote:
of tapes
somewhere. :)
On 4/17/14 9:32 AM, Benjamin Huntsman wrote:
Does anyone know, are those circa System/360, or are they from
used even
into the 370 era, though by that time self loading drivers
were common and most tapes came in normal or self load collars. These
look like System/360 but its hard to be certain...
Dave
Stock up now ... You never know when you need to send that station wagon the 7090 era?
Most of the containers I've seen prior to the 360 are black instead of
blue.
The other way to tell is the supported density. 9 track tapes are all
360 era.
800bpi 7 track was the highest density IBM used on machines like the
1401 or 7090.
If a tape is rated at 556 bpi, for example, it probably started out on
earlier
machines. 7 track drives, of course, were available as options on the
360 for data
migration.
These are just canisters so no density. Frankly the same canisters were 
12:27 p.m.
On 04/17/2014 09:32 AM, Benjamin Huntsman wrote:
Hi all!
I've seen several tape reel cases on eBay like the following:
http://www.ebay.com/itm/3-VINTAGE-IBM-MAGNETIC-TAPE-DATA-PROCESSING-PLASTIC…
Does anyone know, are those circa System/360, or are they from the 7090 era? I'm
suspecting they predate the 360, but it's hard to tell...
Even if this was 1969, I couldn't tell you--reel cases were common and,
as long as I had one for every reel of tape, I didn't pay much
attention. As a matter of fact, I handled an IBM-origin tape written in
1970 a couple of weeks ago, but I couldn't tell you what the case looked
like, other than it was clear plastic and IBM branded. The tape was
1600 PE density, 9 track. That, of course, is no certain indicator, as
I used 6250 FCI-rated tapes back in the day at 7 track, 556 BPI.
Tape racks of the time were wider-spaced to accommodate the cases than
the later "naked" auto-loading strip type.
--Chuck
12:57 p.m.
On Apr 17, 2014, at 3:27 PM, Chuck Guzis <cclist at sydex.com> wrote:
On 04/17/2014 09:32 AM, Benjamin Huntsman wrote:
Indeed. We had plenty of IBM cases in our PDP11 shop. And perhaps even one or two CDC
cases.
Hi all!
I've seen several tape reel cases on eBay like the following:
http://www.ebay.com/itm/3-VINTAGE-IBM-MAGNETIC-TAPE-DATA-PROCESSING-PLASTIC…
Does anyone know, are those circa System/360, or are they from the 7090 era? I'm
suspecting they predate the 360, but it's hard to tell...
Even if this was 1969, I couldn't tell you--reel cases were common and, as long as I
had one for every reel of tape, I didn't pay much attention. Tape racks of the time were wider-spaced to
accommodate the cases than the later "naked" auto-loading strip type.
And then there were the non-autoloading strips (?tape seals?), too; those were even
smaller.
paul
1:32 p.m.
Tektronix dumped cases like this in the 70's at the store where employes could buy
surplus. I have a couple from there.
Zane
On Apr 17, 2014, at 9:32 AM, Benjamin Huntsman
<BHuntsman at mail2.cu-portland.edu> wrote:
Hi all!
I've seen several tape reel cases on eBay like the following:
http://www.ebay.com/itm/3-VINTAGE-IBM-MAGNETIC-TAPE-DATA-PROCESSING-PLASTIC…
Does anyone know, are those circa System/360, or are they from the 7090 era? I'm
suspecting they predate the 360, but it's hard to tell...
Thanks much, as always!
-Ben
3902
days inactive
3902
days old
9 comments
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participants (8)
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aek＠bitsavers.org -
bfranchuk＠jetnet.ab.ca -
BHuntsman＠mail2.cu-portland.edu -
cclist＠sydex.com -
dave.g4ugm＠gmail.com -
healyzh＠aracnet.com -
leec2124＠gmail.com -
paulkoning＠comcast.net