I have a warped mind: I keep thinking of an RFE for z/OS support of perforated paper (well, mylar) tape. GD&R.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Tony Thigpen <[email protected]> Sent: Tuesday, May 22, 2018 6:34 AM To: [email protected] Subject: Re: VTL as 3490 vs 3590 Timothy, The biggest problem is that physical tape, unlike dasd, has been the primary method of data archive and data transport since it was created. (And that includes paper tape.) While tape virtualization is great for internal tapes, off-site archival now requires an expensive duplicate of the primary VTL. And, as machine age and are replaced, historical archival have to be converted to the new equipment. Also, I could always point to the tape rack and tell the auditors: "You want the data from 20 years ago? There it is." Tony Thigpen Timothy Sipples wrote on 05/22/2018 02:04 AM: > Radoslaw Skorupka wrote: >> It is really nice sales pitch, but *technically* IBM it is no longer >> possible to write directly to a tape volume from z/OS. > > First of all, it's not a sales pitch. I don't do sales pitches very well. > > Second, it's also no longer possible to "write directly" to disk drives. > *All* mainframe-attached storage -- flash/SSD, disk, and now tape -- is > highly virtualized, with intelligent controllers equipped with caches. > > Why is this progress a problem? And it's a very long arc of progress, not > at all sudden. As I've carefully and accurately documented, there was > nearly 19 years of product overlap as IBM tape made the transition to > virtualized-physical. > > Finally, "ask your friendly IBM representative" about IBM TS1155/TS4500 > attachment to your IBM TS7700. I have no inside information on that, but I > do pay some attention to IBM's past practices. What I see is that, for > several generations of tape drives stretching back many years, IBM has > waited some period of time before certifying z/OS use of that new tape > drive/tape media/density. I suspect that's because IBM is just being that > extra bit careful with your most precious data (such as most of the world's > most important financial records) and its long-term retention needs, but > ask. > > -------------------------------------------------------------------------------------------------------- > Timothy Sipples > IT Architect Executive, Industry Solutions, IBM Z & LinuxONE, > Multi-Geography > E-Mail: [email protected] > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
