Crum! That the name i tried to recall. It was a flat disk. Same functionality, different face.
ITschak בתאריך 20 בדצמ׳ 2017 7:50 אחה״צ, "Seymour J Metz" <[email protected]> כתב: > There was no disk on NCR CRAM.. > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List <[email protected]> on behalf > of ITschak Mugzach <[email protected]> > Sent: Wednesday, December 20, 2017 12:23 PM > To: [email protected] > Subject: Re: Can anyone remember "drum" storage? > > The second computer I worked on (the first one was IBM 360) was NCR RMC > 315. It had a drum disk that read coated cards coshed by a combination of > the sticks it was hanged on. when cards did fall down, we used a pencil to > help it... Unpleasant noise they made then ;-) Don't know how many heads it > used to read a card... > > ITschak > > On Wed, Dec 20, 2017 at 7:12 PM, Paul Gilmartin < > [email protected]> wrote: > > > On Wed, 20 Dec 2017 07:08:40 -0600, John McKown wrote: > > > > >It's not really a drum, but it is getting closer. Of course, for true > > >speed, one should go SSD. > > > > > >http://secure-web.cisco.com/1DHgb8A1qnxL_q0R_ > 7UcfYYlqprY1cFUfcuCknoztJbnARFqU5ToFF1_X0wBFenSvZL4u1gdZz30pBQGWxDria > TQp7BvOrVvHQGGadK7x3Y_XY-EaXaq0_oayYrerLu3Yk8SUUMeKNF0F_sDSVO1mKjkd_ > GWAmjksMQDqaSVEqBZ0ZXWfXp-YhIqmQw7APTAKyVsaF-2dWZbO_ > Msn9R5aEN68FvTOQpkCj8oDr0TIPHTN2mk4x-vCqhTJDrPmAjzfZm5MOpVmWvsTQUCN > ltmIlvEWFqERRbHGbZkDyNJ9-Mk6nX7IXzEGndv4YaMpNmYVeZ6en5x > 6zeNbEN5WYf1wFycyU3sHXGbVVFH0kA4xdGk5g1wspH-mVTHJXHvuUm86/ > http%3A%2F%2Fwww.theregister.co.uk%2F2017%2F12%2F19%2Fseagate_disk_drive_ > > multi_actuator/ > > > > > >[quote] > > > > > >Seagate is increasing IO performance in disk drives by separating > > >read-write heads into two separate sets which can operate independently > > and > > >in parallel. > > > > > In contrast, the StorageTek SuperDisk had 4 spindles served by a single > > X-shaped actuator. It sold poorly at first because the medium wasn't > > removable. Then IBM introduced a drive (33xx?) with permanent medium > > which somewhat legitimized the market for StorageTek. > > > > There's a legend ("Navy story") of a Univac Fastrand drum mounted on a > > ship. > > The ship made a sharp turn and gyroscopic torque pulled the mounting > bolts > > out of the deck. > > > > -- gil > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > > > -- > ITschak Mugzach > *|** IronSphere Platform* *|** Automatic ISCM** (Information Security > Contiguous Monitoring) **| * > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
