On Thu, 5 Jan 2017 15:34:12 -0700, Paul Gilmartin wrote: >VBS should have been the only RECFM anyone ever needed, >thus the only one ever defined and supported.
Are you forgetting that in MVS, and in OS/360 before it, a program doesn't have to care what kind of device it is working with? Certainly a program designed to read cards would not use VBS. Neither would a program that punches cards or writes to a printer. The performance advantages of FBS for random access cannot be achieved with VBS. These are just a few reasons why VBS isn't the only RECFM anyone would ever need. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
