Walrus as a storage layer solution in the Sui ecosystem means this tight technical coupling implies its stability depends not only on its own distributed node network, but is also directly constrained by the operational status of the Sui mainnet.

We need to seriously consider a realistic extreme scenario: what if the Sui network stops producing blocks due to consensus mechanism vulnerabilities or suffers a large-scale DDoS attack?

During this period when the Sui mainnet is down, although Walrus storage nodes remain operational and hard drive data is intact, the entire system's control center loses responsiveness. You cannot request new storage quotas, cannot adjust access permission policies, and may even be unable to verify data ownership and access permissions through Sui on-chain contracts. The result is that data falls into a "zombie" state—physically present, but logically inaccessible or uncontrollable.

Particularly problematic are scenarios where permission verification relies on real-time on-chain validation. For example, applications like "holding a specific NFT to decrypt stored files"—once Sui experiences downtime, the entire authentication mechanism becomes paralyzed, and even users with legitimate permissions cannot access data.

Based on this understanding, when designing businesses with high availability requirements, I would not assume L1 is always stably online. Instead, I would build a "backup degradation solution": cache critical metadata and permission snapshots on the application side. When the Sui network malfunctions, the application can temporarily switch to local verification mode and directly request data from Walrus nodes using cached credentials—provided that Walrus nodes offer some offline verification capability, or the application layer has backup decryption methods.

To put it plainly, without this kind of "emergency contingency plan that maintains basic operation independent of the mainchain," all decentralization storage solutions claiming such will appear fragile in the face of mainchain failures.

Disclaimer: The above represents personal research perspectives and is provided solely for technical discussion reference and does not constitute any investment advice.