Ethereum co-founder Vitalik Buterin has identified Peer Data Availability Sampling (PeerDAS) as a crucial tool for addressing the network’s growing blob storage demands. PeerDAS is a feature of the upcoming Fusaka upgrade.

His remarks arrive as Ethereum records six blobs per block, a milestone that has intensified concerns about data bloat across the ecosystem.

Blobs were introduced through EIP-4844 as temporary on-chain data containers, designed to lower costs for Layer-2 rollups while avoiding permanent storage pressure. Unlike call data, blobs expire after about two weeks, reducing long-term storage needs while preserving integrity for transaction verification.

This structure makes rollups cheaper to operate and enhances Ethereum’s scalability.

However, that design has spurred the rapid adoption of blobs across the blockchain network. On Sept. 24, on-chain analyst Hildobby reported that several Ethereum layer-2 solutions, including Base, Worldcoin, Soneium, and Scroll, now rely heavily on blobs.

Considering this, the analyst pointed out that validators now require more than 70 gigabytes of space to manage blobs, warning that this figure could balloon to over 1.2 terabytes if left unpruned.

This sharp increase has forced developers to look for solutions that balance scalability with storage efficiency.

How PeerDAS works

Buterin explained that PeerDAS will solve this challenge by preventing any single node from storing the entire dataset and distributing responsibility across the network.

According to him:

“The way PeerDAS works is that each node only asks for a small number of “chunks”, as a way of probabilistically verifying that more than 50% of chunks are available. If more than 50% of chunks are available, then the node theoretically can download those chunks, and use erasure coding to recover the rest.”

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Author: Oluwapelumi Adejumo