Sector size, multiple of, or evenly divisible into was the rule I learned when the Earth's crust was still cooling. Since then, it's been the amount of data a disk arm can read without introducing a rotational delay or evenly divisible into. The "evenly divisible into" is because any subsequent reads don't actually perform any disk IO. Like you, I stopped worrying about it long ago. AFAIK, different drives/controllers are optimized for either a high number of short bursts or a low number of large bursts. Oh, oh, I've got the answer: It depends! <VBG> Pat Barber wrote: > > John P Carr wrote: > > > > >>John P Carr wrote: > > >> TRIVIA QUESTION; > > >> If there were such a thing as an optimal record length what would it be ? > > > > > Something like that. On the CISC machines, John Sears once said it would > > be 31 bytes because of something like you said. > > John: > > I can't remember that "cute" number(nobody cares anymore) but I "think" > it was 256 for the CISC and it jumped to 512 for the risc... but I been > wrong before. Back before we had machines with a gazillion disk bytes, > I paid attention to that sort of thing.. +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: email@example.com +---
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