Jakob Hirsch wrote: > Quoting W B Hacker: > >> ... domain > ... >> ...servers, services, or whatever. >> Where is the 'virtual'? > > Thinking of the historical meaning of a domain, where hosts in a network > are something like host.section.example.net, a > mail-/web-/$anyservice-server handling (*.)example.net (and probably > other domains) does not really contain contain the whole domain. I'd say > it's more like a proxy (with some added functionality) or a wrapper. >>From the outside, you don't know (and shouldn't care) if > some.host.example.org is real or ... virtual, yes.
That is still in the flawed (semantics) area. > Virtual doesn't mean > that it doesn't exist. It just means there's something, but it may be > something else than it looks like. That's a better one... > The extra layer handling the > virtuality makes its usage transparent. > Think of virtual memory: You don't know which real memory location you > are accessing, but you will surely access real memory (even if your data > has to be swapped in before to the location). > ACK - but here again, there is 'real' memory of one of more speed/acess type classes. Historically, tape and punched card storage 'near-line' or off-line memory, and a hard drive is 'rotating' memory. None of it is a 'lie'. The 'virtual memory' usage should probably have been called 'virtual core' when it first appeared and we might not have gotten into this fuzzball. ;-) But - as has been said - not much point in expecting anyone to change. "Man invented language to satisfy his deep need to complain." - Anon Bill > -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
