Sujet : Re: Where did CKD disks come from?
De : sarr (at) *nospam* sdf.org (Sarr Blumson)
Groupes : comp.archDate : 23. Dec 2024, 19:40:27
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vkcaqr$1ai8o$2@dont-email.me>
References : 1 2 3 4
User-Agent : tin/2.6.2-20221225 ("Pittyvaich") (NetBSD/9.3 (amd64))
EricP <
ThatWouldBeTelling@thevillage.com> wrote:
John Levine wrote:
BTW if you want to see a weird piece of storage hardware,
take a gander at the chapter on 2321 Data Cell Drive.
It has a rotating drum with cards in slots that move up and down
to be read, kind of like the old slide projectors,
and each card has 10 magnetic stripe
http://www.bitsavers.org/pdf/ibm/2841/
http://www.bitsavers.org/pdf/ibm/2841/A26-5988-0_2841_2311_2321_7320_Descr.pdf
In 1969 I was a TA for intro programming with ~300 studemts at Michigan. The
Computer Center had just bought a DataCell and, because they intended it for
archival storage, made it cheap. So we, being budget conscious, put the
course files for out final problem on it. During finals week. MTBF was about
20 minutes. Great unhappiness.
-- sarr@sdf.orgSDF Public Access UNIX System - http://sdf.org
Where did CKD disks come from?
Re: Where did CKD disks come from?