Tom, Yes, I believe there was a period of time and certain CPU models when the hardware supported what (IIRC) was called either basic mode or LPAR mode. Basic mode ran the OS on bare hardware and obviously only 1 OS image on the box.
Rex -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Tom Brennan Sent: Tuesday, January 17, 2023 3:30 PM To: [email protected] Subject: [EXTERNAL] Re: Beware IBM PTF UJ09197 (APAR OA63062) Once IBM started using LPARs was there ever another option? I don't remember or was never involved. Today I call running under an LPAR "bare metal", as opposed to z/VM or KVM or whatever. On 1/17/2023 10:32 AM, Paul Gilmartin wrote: I understand that IBM wisely nowadays > supports z/OS only in an LPAR, not in both LPAR and bare metal. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- The information contained in this message is confidential, protected from disclosure and may be legally privileged. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying, or any action taken or action omitted in reliance on it, is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
