From: clubley@remove_me.eisner.decus.org-Earth.UFP   
      
   On 2025-10-30, Arne Vajhøj  wrote:   
   > On 10/30/2025 9:12 AM, Simon Clubley wrote:   
   >> On 2025-10-30, gcalliet  wrote:   
   >>> It seems now, because the strategy used by VSI or its investor has been   
   >>> for ten years a strategy copied on strategies for legacies OS (like   
   >>> z/os...), the option of a VMS revival as an alternate OS solution is   
   >>> almost dead.   
   >>   
   >> z/OS is responsible for keeping a good portion of today's world running.   
   >> I would hardly call that a legacy OS.   
   >   
   > z/OS is still used for a lot of very important systems.   
   >   
   > But it is also an OS that companies are actively   
   > moving away from.   
   >   
      
   Interesting. I can see how some people on the edges might be considering   
   such a move, but at the very core of the z/OS world are companies that   
   I thought such a move would be absolutely impossible to consider.   
      
   What are they moving to, and how are they satisfying the extremely high   
   constraints both on software and hardware availability, failure detection,   
   and recovery that z/OS and its underlying hardware provides ?   
      
   z/OS has a unique set of capabilities when it comes to the absolutely   
   critical this _MUST_ continue working or the country/company dies area.   
      
   In the VMS world, VMS disaster tolerant clusters were literally a generation   
   ahead of what everyone else had as it took 20 years for rivals to be able   
   to match the fully shared-everything disaster tolerant functionality that   
   VMS has.   
      
   Likewise, to replace z/OS, any replacement hardware and software must also   
   have the same unique capabilities that z/OS, and the hardware it runs on,   
   has. What is the general ecosystem, at both software and hardware level,   
   that these people are moving to ?   
      
   Simon.   
      
   --   
   Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP   
   Walking destinations on a map are further away than they appear.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)