maximum efficiency, bah! a good sysadmin is focused on keeping shit from breaking. If that means putting up an active-active redundant system where you really only need the capacity of one system, so be it.
Those of us who get paged when the shit hits the fan tend to be pretty careful of breaking things; and quite often, we work on systems where relatively short downtimes can lead to losses greater than our yearly salaries.
That said, all the best SysAdmins have at least some background in C and NIX systems programming, and nearly all NIX systems programmers are also pretty good SysAdmins.
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maximum efficiency, bah! a good sysadmin is focused on keeping shit from breaking. If that means putting up an active-active redundant system where you really only need the capacity of one system, so be it.
Those of us who get paged when the shit hits the fan tend to be pretty careful of breaking things; and quite often, we work on systems where relatively short downtimes can lead to losses greater than our yearly salaries.
That said, all the best SysAdmins have at least some background in C and NIX systems programming, and nearly all NIX systems programmers are also pretty good SysAdmins.