Correction. 16 IBM 350 disk drives, each weighing a ton. Is that what Tennessee Ernie Ford was singing about?
On Tue, Dec 1, 2015 at 10:51 PM, Mike Schwab <[email protected]> wrote: > 666K cards at 80 bytes per is 53,333,280. > A IBM 350 for a RAMAC 305 weighs over a ton and hold 5 million 6 bit > characters 3.5MB. > So you would need 15 of those. > Or a PC hard disk drive from 1994 of 60MB. > Or about 30 3.5 floppy disks. > Or a small flash drive of 64M to 2G. > Or a micro SD card of 2G. > > > > On Tue, Dec 1, 2015 at 2:41 PM, Barry Merrill <[email protected]> wrote: >> I think a box of 2000 IBM cards is on the order of 6 pounds, >> so a TON of JCL cards would be 333 boxes, or about 666,666 >> card images. >> >> But, the useful weight is zero, since we only use the holes. >> >> Barry >> >> >> Herbert W. "Barry" Merrill, PhD >> President-Programmer >> MXG Software >> Merrill Consultants >> 10717 Cromwell Drive >> Dallas, TX 75229-5112 >> [email protected] >> Fax: 214 350 3694 - Still works, received as email >> Tel: 214 351 1966 - Unreliable, please use email >> >> www.mxg.com HomePage: FAQ answers most questions >> [email protected] License Forms, Invoice, Payment, ftp information >> [email protected] Technical Issues >> MXG-L FREE ListServer http://www.mxg.com/mxg-l_listserver/ >> >> >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] On >> Behalf Of Farley, Peter x23353 >> Sent: Tuesday, December 01, 2015 1:59 PM >> To: [email protected] >> Subject: What's a "ton" of JCL? [was:RE: Straightforward way to determine >> hardware architecture level?] >> >> Re: "ton" of JCL, at least one large shop of my prior acquaintance (20 or so >> years ago) had over 250,000 members in the production applications JCL >> libraries. >> >> Not sure how much of that was obsolete at the time, but the batch operations >> control product they used had vast quantities of data as well. >> >> I think that counts as a "ton" or 2 . . . :) >> >> Peter >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] On >> Behalf Of Peter Relson >> Sent: Tuesday, December 01, 2015 9:30 AM >> To: [email protected] >> Subject: Re: Straightforward way to determine hardware architecture level? >> >> <Snipped> >> >> . . . migrating from Cobol 4 to Cobol 5 without changing a ton of JCL (how >> much JCL is a "ton" anyway?). >> >> -- >> >> This message and any attachments are intended only for the use of the >> addressee and may contain information that is privileged and confidential. >> If the reader of the message is not the intended recipient or an authorized >> representative of the intended recipient, you are hereby notified that any >> dissemination of this communication is strictly prohibited. If you have >> received this communication in error, please notify us immediately by e-mail >> and delete the message and any attachments from your system. >> >> ---------------------------------------------------------------------- >> 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 > > > > -- > Mike A Schwab, Springfield IL USA > Where do Forest Rangers go to get away from it all? -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
