Great story. You should add some content to the Wikipedia page
https://en.wikipedia.org/wiki/Live_migration.
On 30/04/2018 1:26 PM, Anne & Lynn Wheeler wrote:
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
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