Date: Mon, 20 Sep 1999 11:46:17 +0930 From: Greg Lehey <grog@lemis.com> To: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, "Brian F. Feldman" <green@FreeBSD.org>, FreeBSD Chat <chat@FreeBSD.org> Subject: Re: cvs commit: src/usr.bin/systat vmstat.c Message-ID: <19990920114616.I55065@freebie.lemis.com> In-Reply-To: <199909200213.TAA56998@gndrsh.dnsmgr.net>; from Rodney W. Grimes on Sun, Sep 19, 1999 at 07:13:38PM -0700 References: <19990920101545.U55065@freebie.lemis.com> <199909200213.TAA56998@gndrsh.dnsmgr.net>
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[moved to -chat] On Sunday, 19 September 1999 at 19:13:38 -0700, Rodney W. Grimes wrote: >> On Sunday, 19 September 1999 at 11:46:17 -0700, Rodney W. Grimes wrote: >>>> In message <199909191837.LAA55732@gndrsh.dnsmgr.net>, "Rodney W. Grimes" writes >>>> : >>>> >>>>>> Or as IBM did many years ago "rotating platter mass storage device" :-) >>>>> >>>>> I thought there international work for Disc was ``Direct Access Storage >>>>> Device'' abbreviated as ``DASD'', pronounced as in DazzDee :-). >>>> >>>> I don't think that got used over here around '90 or so. There were >>>> also various conflicing terminologies, mostly one per on product line >>>> (series/1 vs 3x vs 3[67]0 etc etc). >>> >>> DASD was post 370 terminology, started about the time of the 3082/84 >>> series so 1990 would be about right for when IBM started to use it. >> >> I have here a book entitled "IBM 360 Assembler Language Programming", >> published by Wiley in 1970. On page 409, at the beginning of the >> chapter entitled "Direct Access Storage Devices (DASD)", I read >> >> DASDs available for System 360 are listed below. >> >> 1. Drive with removable disk packs: 2311 and 2314. >> 2. Drive with non-removable disk packs: 2302. >> 3. Drum: 2301 and 2303. >> 4. Data Cell drive: 2321. > > Your looking at technical manuals, yes, DASD has been in use there for > eons, I could probably find reference to it in 1401 documentation circa > 1964. But it was much much much later that IBM stated calling it DASD > in marketing data, as no one outside the technical crowd knew what it > was. Ah. > You'll also note that my circa 1969 ``Programming the IBM 1130'', > published by Wiley in 1969 makes no mention at all of DASD, uses > the word disk extensivly and references the model 2310 disk cartridge > drive (immediate predicessor to the 2311.) Well, no, you're going to have to note that for me :-) I suppose it's conceivable that the term grew up with the mainframe people at IBM and was adopted by the other groups at a later date. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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