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papers/lux-pq-migration/sections/09-storage-and-bandwidth-impact.tex
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\section{Storage and Bandwidth Impact}
\begin{center}
\begin{tabular}{lrrr}
\toprule
\textbf{Phase} & \textbf{Block Header} & \textbf{Epoch Proof} & \textbf{Annual (headers + epochs)} \\
\midrule
Phase 1 (current) & 144 B & 248 B & 4.5 TB + 8.1 GB \\
Phase 2 & $\sim$3,500 B & 248 B & 110 TB + 8.1 GB \\
Phase 3 & $\sim$3,400 B & $\sim$200 B & 107 TB + 6.3 GB \\
Phase 2 (pruned) & $\sim$3,500 B & 248 B & 9.1 TB (30d) + 8.1 GB \\
\bottomrule
\end{tabular}
\end{center}
The 24$\times$ increase in block header size from Phase 1 to Phase 2 is the primary storage cost. With 30-day pruning (retain only epoch proofs after 30 days), the working storage remains practical.