dcrayf...@gmail.com (David Crayford) writes: > PowerVM had live migration in 2007 [1]. VMware released VMotion in > 2003 [2] so I guest the trailblazer was VMware. > > [1] https://en.wikipedia.org/wiki/Live_Partition_Mobility > [2] https://en.wikipedia.org/wiki/VMware
the internal world-wide sales&marketing (vm/370 based) HONE system had multi-system single-sysetm image, load-balancing and fall-over by 1978 ... largest was the US HONE had consolidated datacenters in Palo Alto in the mid-70s (trivia: when FACEBOOK moved into silicon valley, it was into a new bldg built next to the old HONE datacenter). The US HONE datacenter was then replicated in Dallas ... with load-balancing and fall-over between the two complexes ... and finally a third replicated in Boulder. They never got around to doing live migration (POK was constantly putting heavy pressure on HONE to migrate to MVS ... by 1980 they were constantly forced to dump huge amount of resources into repeated failed MVS migrations). However, earlier in the 70s ... the commercial virtual machine CP67 service bureau spin-offs from the science center ... besides doing multi-machine single system image (load-balancing & fall-over) ... had also implemented live migration ... originally to provide 7x24 non-stop operation ... initially for when machine systems and/or hardware was being taken down for IBM service and maintenance. Part of the enormous pressure that POK was putting on HONE ... after Future System failed and there was mad rush to get products back into 370 pipeline, POK manage to convince corporate to to kill the vm370 product, shutdown the VM370 development group, and move all the people to POK (or supposedly they would miss the MVS/XA customer ship date some 7-8yrs later). Eventually Endicott did manage to save the VM370 product mission, but had to reconstitute a development group from scratch ... some of the resulting code quality issues shows up in the VMSHARE archives http://vm.marist.edu/~vmshare/ so it is 40 years since HONE had (virtual machine) single-system image and load-balancing/fall-over capability within datacenter and also across datacenters ... but something like 45 years since the commercial virtual machine service bureaus had live migration (around 30yrs before VMware) ... but would never see such features from IBM because of the enormous political pressure MVS group exerted. trivia: the last product that my wife and I did before leaving IBM in '92 was RS/6000 HA/CMP https://en.wikipedia.org/wiki/IBM_High_Availability_Cluster_Multiprocessing While out marketing, I had coined terms disaster survivability and geographic survivability ... and was asked to write a section for the corporate continuous availability strategy document ... but then the section got pulled because both rochester (as/400) and POK (mvs) complained that they couldn't meet the goals. past posts mentioning HONE http://www.garlic.com/~lynn/subtopic.html#hone past posts mentioning HA/CMP http://www.garlic.com/~lynn/subtopic.html#hacmp past posts mentioning cotinuous availability http://www.garlic.com/~lynn/submain.html#available -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
