Track size. We actually used to use a 2305 "drum" definition for VIO. But if you genned 1 dummy address, you had to gen all 8. Made for a larger IO-gen. So we would go for the next best tracksize of the 2314. So- how many 4K pages fit into a track without wasting too much of it? Plus the 2314 was small, so quick sorts in VIO might be possible, but it prevented sorting a kabillion records. I'm pretty sure 2305 support was removed a long time ago, so you couldn't define it today. Probably true for the 2311/2314/2319. Last time I went through IODF, a fake 3390 (address DEFF) was defined as the only VIO capable device. With all the various Sort and Memory exits today, it's probably just a good history lesson. Oh- way back in the 70s, a company named Ampex (IIRC) made look alike (aka cheaper) memory and Disk storage. Think their mountable disk was the 3314. OK- discuss further...
zNorman -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Martin Packer Sent: Wednesday, May 18, 2016 10:45 PM To: [email protected] Subject: Re: What was a 3314? (was: Whither VIO) It's sort of come back to me: A small track size limits the virtual storage window (probably usually below the line in 1989 when I looked at this). Or it might've been cylinder. But I think it was track. I'm wondering if anyone else remembers something like this. Cheers, Martin Sent from my iPad On 19 May 2016, at 05:20, Edward Gould <[email protected]> wrote: >> On May 18, 2016, at 7:50 PM, Charles Mills <[email protected]> wrote: >> >> I remember them well. I was answering Steve's two implied questions. >> >> 2321 was certainly characterized as DASD. It was indeed a direct >> access storage device. Not a disk, but DASD nonetheless. Certainly not magnetic tape (though it had a family resemblance!) and certainly not unit record. > > It addressing had MMBBCCHHR(R?) so I guess you could address it directly. Anyone remember how to do that? (progr5amming for a 2321 is a lost art (where is Seymour?). > > Ed > >> >> I don't think anyone recalls a 3314. I think the OP said it was a >> typo, 2314 mis-remembered as 3000-series DASD. >> >> Charles >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] >> On Behalf Of Edward Gould >> Sent: Wednesday, May 18, 2016 5:33 PM >> To: [email protected] >> Subject: Re: What was a 3314? (was: Whither VIO) >> >> Chales, >> >> 2321 was a data cell (magnetic strip) hardly could be called DASD) I don’t recall a 3314 . The removable 3340 (not sure the number anyone?) >> >> Ed >> >>> On May 16, 2016, at 7:47 PM, Charles Mills <[email protected]> wrote: >>> >>> >>> >>> 2301, 2321. >>> CharlesSent from a mobile; please excuse the brevity >>> >>> -------- Original message -------- >>> From: Steve Thompson <[email protected]> >>> Date: 05/16/2016 4:51 PM (GMT-08:00) >>> To: [email protected] >>> Subject: Re: What was a 3314? (was: Whither VIO) >>> >>> 2314, 2419, 2311, these are just a few of the "IBM" DASD that I've >>> had the pleasure of working with. I've forgotten the drum device >>> numbers and the noodle snatcher model number. >> >> --------------------------------------------------------------------- >> - 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 >Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- 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
