diff --git a/docu/architecture-guide-geo-redundancy.lyx b/docu/architecture-guide-geo-redundancy.lyx index 3375d2cb..87920317 100644 --- a/docu/architecture-guide-geo-redundancy.lyx +++ b/docu/architecture-guide-geo-redundancy.lyx @@ -4988,74 +4988,6 @@ core business \end_inset -\end_layout - -\begin_layout Standard -\noindent -\begin_inset Flex Custom Color Box 3 -status open - -\begin_layout Plain Layout -\noindent -\begin_inset Graphics - filename images/lightbulb_brightlit_benj_.png - lyxscale 9 - scale 5 - -\end_inset - -Notice that the same family of requirements can be solved -\emph on -very -\emph default - differently. - This guide explains ways for both -\series bold -cost reduction -\series default - and -\series bold -risk reduction -\series default - at the same time, by -\emph on -combining -\emph default - HA requirements with geo-redundancy requirements in a clever way, such - that the combined solution will meet both at the same time. - A resulting combined solution is called -\series bold -Football on top of MARS -\series default -. - It provides additional operational value, such as load balancing via the - -\series bold -ability for butterfly -\series default -, see section -\begin_inset CommandInset ref -LatexCommand nameref -reference "subsec:Flexibility-of-Failover" -plural "false" -caps "false" -noprefix "false" - -\end_inset - -. -\end_layout - -\end_inset - - -\end_layout - -\begin_layout Standard -\begin_inset VSpace defskip -\end_inset - - \end_layout \begin_layout Standard @@ -5333,11 +5265,56 @@ There are some ongoing political discussions about detail requirements for The mimimum distance requirement between suitable geo-locations is seen differently by different interest groups, and even differently in different countries. - Background are the + Some backgrounds: +\end_layout + +\begin_layout Itemize +\noindent +The \series bold enormous cost \series default - for setup of a datacenter. + for setup of a new datacenter. + +\end_layout + +\begin_layout Itemize +\noindent +Several +\emph on +commerical +\emph default + geo-redundancy solution +\emph on +components +\emph default + are +\series bold +more expensive +\series default + with increasing geo-distance, sometimes by +\emph on +factors +\emph default +, or even +\emph on +unapplicable +\emph default + at all for longer distances (e.g. + bad historical experiences with +\begin_inset Formula $>50$ +\end_inset + + km), while another OpenSource component like MARS does not functionally + depend on +\emph on +arbitrary +\emph default + geo distances +\emph on +by construction +\emph default +. \end_layout \begin_layout Standard @@ -5397,6 +5374,94 @@ international requirements course of the next decades. \end_layout +\begin_layout Standard +\begin_inset VSpace defskip +\end_inset + + +\end_layout + +\begin_layout Standard +\noindent +\begin_inset Flex Custom Color Box 3 +status open + +\begin_layout Plain Layout +\noindent +\begin_inset Argument 1 +status open + +\begin_layout Plain Layout + +\series bold +Opportunities +\end_layout + +\end_inset + + +\begin_inset Graphics + filename images/lightbulb_brightlit_benj_.png + lyxscale 9 + scale 5 + +\end_inset + +Notice that not only the same family of requirements can be solved +\emph on +very +\emph default + differently, but also some +\emph on +combinations of different requirements +\emph default +. + This guide explains ways for both +\series bold +cost reduction +\series default + and +\series bold +risk reduction +\series default + at the same time, by +\emph on +combining +\emph default + HA requirements with geo-redundancy requirements in a clever way, such + that the combined solution will meet both at the same time. +\end_layout + +\begin_layout Plain Layout +\noindent +Example: a resulting combined solution is called +\series bold +Football on top of MARS +\series default +. + It provides additional operational value, such as load balancing via the + +\series bold +ability for butterfly +\series default +, see section +\begin_inset CommandInset ref +LatexCommand nameref +reference "subsec:Flexibility-of-Failover" +plural "false" +caps "false" +noprefix "false" + +\end_inset + +. +\end_layout + +\end_inset + + +\end_layout + \begin_layout Section What is \emph on