How can I draw cylinder on top of cylinders indicating storage figure?

Question

I want to draw a Disk/Storage icon as follows:

---

I was able to come up with:

\documentclass[eblocbroker.tex]{subfiles}
\begin{document}
\begin{figure}[!htp]
    \centering
    \begin{tikzpicture}[%
        >=latex,shorten >=2pt,shorten <=2pt,shape aspect=1,
        arrow/.style={<->, >=stealth, semithick},
        block/.style={},
        every node/.style = {font=\normalsize}
        ]

        \node[
        cylinder,shape border rotate=90,draw,fill=white,
        shape aspect=0.2,font={\baselineskip=9pt},inner xsep=3pt,
        align=center,xshift=30mm,yshift=-2mm] (A) {%
            Cloud Storage \\
            \textit{...} \\
            \textit{...}
        };
        \node[
        cylinder,shape border rotate=90,draw,fill=white,yshift=-2.7mm,
        shape aspect=0.2,font={\baselineskip=9pt},inner xsep=3pt,
        align=center,xshift=30mm,yshift=-2mm] (C) {%
            Cloud Storage
        };

        \node[
        cylinder,shape border rotate=90,draw,fill=white,yshift=2.7mm,
        shape aspect=0.2,font={\baselineskip=9pt},inner xsep=3pt,
        align=center,xshift=30mm,yshift=-2mm] (B) {%
            Cloud Storage
        };


        \node[draw,circle,dashed,inner sep=-1.2pt,draw=gray!50,thick,fit=(A)] (D) {};

    \end{tikzpicture}
\end{figure}
\end{document}

Output:

I was not able to draw sub-cyclinder in the middle. I keep the text in between to keep cyclinder's width.

Answer 1

Draw the nodes from bottom to top. I suggest defining a style for repeated use. Include minimum width to keep all cylinders the same size. You can use the positioning library with negative node distance for easy placement. You can use \phantom text to keep the empty cylinder with the same aspect.

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric, positioning, fit}

\tikzset{mycylinder/.style={cylinder, shape border rotate=90, aspect=0.2, draw, fill=white, minimum width=2.5cm}}

\begin{document}
\begin{figure}
    \centering
    \begin{tikzpicture}[node distance=-4mm]
        \node[mycylinder] (C) {Cloud Storage};
        \node[mycylinder, above=of C] (A) {\phantom{Cloud Storage}};
        \node[mycylinder, above=of A] (B) {Cloud Storage};
        \node[draw, circle, dashed, inner sep=-1.2pt, draw=gray!50, thick, fit=(A)(B)(C)] (D) {};
    \end{tikzpicture}
\end{figure}
\end{document}