Hercules emulates Mainframe DASD on Open system disk. On Tue, Jun 11, 2024 at 2:50 PM Jason Cai <[email protected]> wrote: > > Thank you very much for your response. Our historical backups are made > through DSS dumped to IBM TS7700 tape library, and the data mainly consists > of IMS and DB2 image copies and their unload datasets. We have over two years > of license time to use z14 and z/OS 2.5. We plan to restore the dumped data > to 3390 DASD through DSS, transfer it via FTP to disk on an x86 server, and > then convert this data from EBCDIC format to UTF-8 format. We intend to > completely abandon z/OS. However, given the large volume of data, we are > concerned about whether two years will be sufficient to complete this > migration. > > We are looking for a supplementary solution to continue our data transfer in > case the z14 is no longer available. I do not fully understand Linux 1. Can > Linux directly connect to TS7700, TS7600, and 3390 DASD ? Is Linux 1 > restricted to connecting only to Linux-formatted DASD? Can Linux 1 handle the > conversion from EBCDIC to UTF-8? > > I remember many years ago purchasing an IBM zVDT to install on x86 for $1000 > per year. Does IBM still offer this option? > > Is there another solution to solve our problem? > > Thank you very much. > > Jason Cai > On Tue, 11 Jun 2024 14:50:39 -0400, Tony Harminc <[email protected]> wrote: > > >On Tue, 11 Jun 2024 at 13:58, Jason Cai <[email protected]> wrote: > > > >> Our organization's z mainframe has reached the end of its hardware service > >> life and is no longer capable of running z/OS. However, we have a LinuxONE > >> machine that remains operational. > >> > >> We possess historical data backups from our z/OS environment that we need > >> to access. To address this, we are considering the installation of the > >> Hercules emulator on our zLinux environment. Our goal is to utilize > >> Hercules to emulate the z/OS necessary to access our backup data sometime. > >> > > > >Hercules does not emulate *any *operating system. Hercules emulates *hardware > >*from the S/370 all the way to zArch family. > > > >You would need to run an operating system under Hercules, no matter what > >host platform (from Rasberry pi to Linux 1 and pretty much everything in > >between) Hercules is running on. > > > >Even if it might work, you can't run z/OS for this purpose for IBM > >licensing reasons. > > > >Could you please advise on the feasibility of this approach? Specifically, > >> we are interested in understanding: > >> > >> 1. The compatibility of Hercules with zLinux on a LinuxONE machine. > >> > > > >It should run, but probably hasn't been tested. > > > >2. Any known limitations or considerations we should be aware of when using > >> Hercules for this purpose. > >> > > > >Many... > > > > > >> 3. The steps required to set up Hercules in a zLinux environment to access > >> z/OS backup data. > >> > > > >Again, you need an operating system, and presumably some application > >program(s) that understand the format of your backup data. What format is > >this historical data in? Backups on disk or (virtual?) tape? Made by what > >program? Or is the historical data as-it-was on physical disks that were > >attached to your former z/OS on an obsolete zArch machine and are now > >attached to your Linux 1 box? In that case, what kind of disks, and what > >kind of datasets? > > > >Depending on answers to the above, it is just faintly possible that you > >could run MVS 3.8 in this environment, and use its understanding of IBM > >disk geometry (limited 3390 support has been added by user mods) and access > >methods to read the data. But there is still the question of what > >application programs would read and interpret this data, whether they would > >work on an old 24-bit MVS, and whether they too would have licensing issues. > > > >Without further information I would guess that writing new code in a modern > >language to run directly under Linux on your Linux 1 machine and interpret > >your historical data would be the best approach. > > > >Tony H. > > > >---------------------------------------------------------------------- > >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
-- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
