On 10/15/2018 12:19 AM, Martin Packer wrote:
Now, an interesting (to me) question is whether the 4-character version is unique.
I've always assumed they are not *guaranteed* unique, but in practice they seem to be. Serial numbers are so sparse that we see customers *routinely* upgrade from one CPU type to another *without* changing the serial number!
It would beĀ good problem for the mainframe community to have more than 64K physical mainframes of any given type running in the world simultaneously.
FWIW, we check only the last four hex digits of the serial number in our licensing routines...
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