From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Ted MacNEIL Sent: Friday, March 27, 2009 2:43 PM To: [email protected] Subject: Re: Optimal Tape Blocksize
>I've seen very many apps people who didn't know about block size efficiencies. In 1982 I attended a SHARE session in New Orleans in which the IBM presenter said that he had surveyed a huge number of data sets in an internal IBM development data center, and had found that the single most commonly used block size was 80 bytes. Presumably many of these people had been developing mainframe code since the early 1960s when S/360 began being built. Bill Fairchild Rocket Software ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
