I can't help but laugh at the names BS2000 and BS3000. LMAO! – Vignesh Mainframe Infrastructure
-----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Bernd Oppolzer Sent: 24 January 2019 23:11 To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXTERNAL] Re: how many OSes run on IBMz Am 24.01.2019 um 18:01 schrieb R.S.: > W dniu 2019-01-24 o 14:44, Parwez Hamid pisze: >> All depends whether you are asking about 'current' Z systems or the >> older ones. >> >> You can add the following: >> >> KVM >> Hitachi’s operating system, VOS > > Well, IT DEPENDS. > > KVM is Linux based hypervisor. Is it OS? Maybe, like z/VM. Is it > Linux? Maybe, but specialized. > > VOS is just (almost legal) clone of MVS, like Fujitsu MSP. Due to > legal settlements both are not available outside of Japan, AFAIK. > > There are also BS2000 (Siemens mainframe) OSes, similar to MVS and VSE > AFAIK, but it's hard to find out real roots. I heard both are cloned > with (paid) agreement from IBM. BS2000 is a genuine Siemens OS, later transferred to Fujitsu and called BS2000/OSD. It ran on 370 and 390 compatible machines, but was very different from MVS or VSE, AFAIK. Its origins are some older OSes targetting other architectures similar to IBM 360 (RCA Spectra ...). There was a BS3000, too, which was the same as MVS, but Siemens (or Fujitsu) had to cancel it due to legal problems with IBM, IIRC. https://en.wikipedia.org/wiki/BS2000 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN MARKSANDSPENCER.COM ________________________________ Unless otherwise stated above: Marks and Spencer plc Registered Office: Waterside House 35 North Wharf Road London W2 1NW Registered No. 214436 in England and Wales. Telephone (020) 7935 4422 Facsimile (020) 7487 2670 www.marksandspencer.com Please note that electronic mail may be monitored. This e-mail is confidential. If you received it by mistake, please let us know and then delete it from your system; you should not copy, disclose, or distribute its contents to anyone nor act in reliance on this e-mail, as this is prohibited and may be unlawful. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
