diff --git a/présentation.tex b/présentation.tex
index 1836d5d..ecc6000 100644
--- a/présentation.tex
+++ b/présentation.tex
@@ -6,6 +6,7 @@
 \usepackage{amsfonts}
 \usepackage{amssymb}
 \usepackage{tikz}
+\usetikzlibrary{arrows,arrows.meta}
 \usepackage{graphicx}
 \usepackage{xcolor}
 \usepackage{setspace}
@@ -453,6 +454,13 @@ Et comme souvent avec S3, on peut assimiler un bucket à un site, et utiliser le
 
   Et nous visons une offre publique avec un nombre d'usagers pour l'instant relativement modeste.
 \end{frame}
+
+\subsection{Redondance}
+\begin{frame}
+  \centering
+  \input{schéma redondance}
+\end{frame}
+
 \subsection{Matériel}
 \begin{frame}
 \begin{center}
diff --git a/ressources/fichier.png b/ressources/fichier.png
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diff --git a/ressources/garage-logo-sans-écrit.png b/ressources/garage-logo-sans-écrit.png
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diff --git a/ressources/jitsi.png b/ressources/jitsi.png
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diff --git a/ressources/nomad.png b/ressources/nomad.png
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diff --git a/ressources/serveur.png b/ressources/serveur.png
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diff --git a/ressources/webcam.png b/ressources/webcam.png
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diff --git a/schéma redondance.tex b/schéma redondance.tex
new file mode 100644
index 0000000..898f392
--- /dev/null
+++ b/schéma redondance.tex	
@@ -0,0 +1,85 @@
+\begin{tikzpicture}
+  \def\largPC{1}
+  \def\largDNS{1.5}
+  \def\xDNS{-6}
+  \def\xPC{6}
+  \def\yPC{3}
+  \def\xPers{0}
+  \def\yPers{0.6}
+  \def\largPers{1.5}
+  \def\espaceFleches{0.5}
+  
+  % \personnage{position X}{position Y}{facteur d'échelle}{couleur}
+  \newcommand{\personnage}[4]
+  {
+    \fill[#4] ({#1-(0.4 * #3)},{#2-(0.9 * #3)}) .. controls ({#1-(0.4 * #3)},#2) and ({#1+(0.4 * #3)},#2) .. ({#1+(0.4 * #3)},{#2-(0.9 * #3)}) -- ({#1-(0.4 * #3)},{#2-(0.9 * #3)});
+    \fill[#4] (#1,#2) circle ({0.25 * #3});
+  }
+  \personnage{\xPers}{\yPers}{\largPers}{black}
+
+  % serveur DNS
+  \node at (\xDNS, 0) {\includegraphics[width=\largDNS cm]{ressources/serveur.png}};
+  % serveurs de contenus
+  \onslide<6->{\node at (\xPC,   \yPC) {\includegraphics[width=\largPC cm]{ressources/serveur.png}};}
+  \onslide<1->{\node at (\xPC,      0) {\includegraphics[width=\largPC cm]{ressources/serveur.png}};}
+  \onslide<6->{\node at (\xPC, - \yPC) {\includegraphics[width=\largPC cm]{ressources/serveur.png}};}
+
+  % flèches Perso <-> DNS
+  \onslide<2-5,7->{\draw [arrows={Triangle[angle=90:5mm] - }, line width=2mm] ({\xDNS + 0.75 * \largDNS},  \espaceFleches) -- ({\xPers - 0.5 * \largPers},  \espaceFleches);}
+  \onslide<3-5,8->{\draw [arrows={ - Triangle[angle=90:5mm]}, line width=2mm] ({\xDNS + 0.75 * \largDNS}, -\espaceFleches) -- ({\xPers - 0.5 * \largPers}, -\espaceFleches);}
+  % flèches Perso <-> PC milieu
+  \onslide<4-5>{\draw [arrows={ - Triangle[angle=90:5mm]}, line width=2mm] ({\xPers + 0.5 * \largPers}, \espaceFleches) -- ({\xPC - 0.75 * \largPC}, \espaceFleches);}
+  \onslide<5-5>{\draw [arrows={Triangle[angle=90:5mm] - }, line width=2mm] ({\xPers + 0.5 * \largPers}, -\espaceFleches) -- ({\xPC - 0.75 * \largPC}, -\espaceFleches);}
+  % flèches Perso <-> PC bas
+  \onslide<9-10>{\draw [arrows={ - Triangle[angle=90:5mm]}, line width=2mm] ({\xPers + 0.5 * \largPers}, \espaceFleches) -- ({\xPC - 0.75 * \largPC},  {- \yPC + \espaceFleches});}
+  \onslide<10-10>{\draw [arrows={Triangle[angle=90:5mm] - }, line width=2mm] ({\xPers + 0.5 * \largPers}, -\espaceFleches) -- ({\xPC - 0.75 * \largPC}, {- \yPC - \espaceFleches});}
+  % flèches Perso <-> PC haut
+  \onslide<13->{\draw [arrows={ - Triangle[angle=90:5mm]}, line width=2mm] ({\xPers + 0.5 * \largPers}, \espaceFleches) -- ({\xPC - 0.75 * \largPC},  {+ \yPC + \espaceFleches});}
+  \onslide<14->{\draw [arrows={Triangle[angle=90:5mm] - }, line width=2mm] ({\xPers + 0.5 * \largPers}, -\espaceFleches) -- ({\xPC - 0.75 * \largPC}, {+ \yPC - \espaceFleches});}
+
+  % logos Garage
+  \onslide<6->{
+    \node at ({\xPC + 0.35\largPC}, {+ \yPC - 0.4 \largPC}) {\includegraphics[width=0.6 cm]{ressources/garage-logo-sans-écrit.png}};
+    \node at ({\xPC + 0.35\largPC},        {- 0.4 \largPC}) {\includegraphics[width=0.6 cm]{ressources/garage-logo-sans-écrit.png}};
+    \node at ({\xPC + 0.35\largPC}, {- \yPC - 0.4 \largPC}) {\includegraphics[width=0.6 cm]{ressources/garage-logo-sans-écrit.png}};
+  }
+
+  % logos Nomad
+  \onslide<11->{
+    \node at ({\xPC + 0.35\largPC}, {+ \yPC + 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/nomad.png}};
+    \node at ({\xPC + 0.35\largPC},        {+ 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/nomad.png}};
+    \node at ({\xPC + 0.35\largPC}, {- \yPC + 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/nomad.png}};
+  }
+
+  % logos Jitsi
+  \onslide<12->{\node at ({\xPC }, {+ \yPC + 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/jitsi.png}};}
+  \onslide<11>{\node at ({\xPC },        {+ 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/jitsi.png}};}
+  %\node at ({\xPC }, {- \yPC + 0.2 \largPC}) {\includegraphics[width=0.5 cm]{ressources/jitsi.png}};}
+  }
+  
+  % étiquettes DNS
+  \node at (\xDNS, {1*\largDNS}) {DNS};
+
+  % étiquettes serveur
+  \onslide<6->{\node at (\xPC, {  \yPC + 1*\largPC}) {Serveur 1};}
+  \onslide<6->{\node at (\xPC, {     0 + 1*\largPC}) {Serveur 2};}
+  \onslide<6->{\node at (\xPC, {- \yPC + 1*\largPC}) {Serveur 3};}
+  \onslide<1-5>{\node at (\xPC, {     0 + 1*\largPC}) {Serveur};}
+  \onslide<6->{\node at (\xPC, {  \yPC - 1*\largPC}) {\texttt{2ac3::d3dc}};}
+  \onslide<1->{\node at (\xPC, {     0 - 1*\largPC}) {\texttt{2046::24da}};}
+  \onslide<6->{\node at (\xPC, {- \yPC - 1*\largPC}) {\texttt{262d::16bf}};}
+  
+  % question-réponse DNS
+  \onslide<2-5,7->{\node at ({(\xDNS + \xPers)/2}, 2*\espaceFleches) {\texttt{deuxfleurs.fr} ?};}
+  \onslide<3-5>{\node[text width=5cm,align=center] at ({(\xDNS + \xPers)/2}, -2*\espaceFleches) {\texttt{2046::24da}};}
+  \onslide<8->{\node[text width=5cm,align=center] at ({(\xDNS + \xPers)/2}, -3.1*\espaceFleches) {\texttt{2ac3::d3dc\\ 2046::24da\\ 262d::16bf}};}
+
+  % question-réponse serveur
+  \onslide<4-5>{\node at ({(\xPC + \xPers)/2}, 2*\espaceFleches) {\texttt{photo.png} ?};}
+  \onslide<5-5>{\node[text width=5cm,align=center] at ({(\xPC + \xPers)/2}, -2*\espaceFleches) {\includegraphics[width=0.5cm]{ressources/fichier.png}};}
+  \onslide<9-10>{\node[rotate=-33] at ({(\xPC + \xPers)/2}, -1*\espaceFleches) {\texttt{photo.png} ?};}
+  \onslide<10-10>{\node[text width=5cm,align=center] at ({((\xPC + \xPers)/2)*cos(-33)}, -4.8*\espaceFleches) {\includegraphics[width=0.5cm]{ressources/fichier.png}};}
+  \onslide<13->{\node[rotate=33] at ({(\xPC + \xPers)/2}, 4.8*\espaceFleches) {\texttt{jitsi.deuxfleurs.fr} ?};}
+  \onslide<14->{\node[text width=5cm,align=center] at ({((\xPC + \xPers)/2)}, 1*\espaceFleches) {\includegraphics[width=0.5cm]{ressources/webcam.png}};}
+  
+\end{tikzpicture}
\ No newline at end of file