From: arne@vajhoej.dk   
      
   On 11/12/2025 4:43 PM, David Wade wrote:   
   > On 12/11/2025 21:02, Lawrence D’Oliveiro wrote:   
   >> On Wed, 12 Nov 2025 14:54:13 -0500, Arne Vajhøj wrote:   
   >>> IBM mainframes use OS clustering (like VMS) called   
   >>> SysPlex.   
   >>   
   >> Do either of those scale to 460,000 nodes?   
   >>   
   >> No, they don’t.   
   >   
   > Why won't it scale to 460,000 nodes?   
      
   Maybe because IBM only supports SysPlex up to 32 nodes.   
      
   :-)   
      
   (VMS does up to 96!!)   
      
   >                    Why would you need that many nodes,   
   > well unless you are google?   
      
   Nobody need that many nodes for what mainframes are actually   
   used for.   
      
   There are companies that need web scale. Also other companies   
   than Google.   
      
   Arne   
      
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