Walrus Network adopts a cyclical design, with each cycle lasting approximately 14 days. When checking the network status, you can see the specific time points of the current cycle. This is not just a formal design—it directly affects the billing rules for data storage and availability guarantees.

Storing data within a cycle is equivalent to prepay for access during that period. At the end of the cycle, the system distributes storage funds to nodes that meet performance standards. The key here is that nodes cannot simply store data passively; they must regularly prove data accessibility through on-chain events. This proof is called an availability certificate, which is also recorded on the Sui chain, allowing everyone to verify.

Why is this mechanism important? In the mainnet, these on-chain events are not only proof of storage but also influence the overall network storage costs. Walrus manages the current committee, available space, and cost parameters with a system object on the Sui chain. Your fees (including costs in two tokens) partly go into a storage fund to ensure data availability during the cycle. After the cycle ends, the system distributes rewards based on node performance and the fund balance. Underperforming nodes? Rewards will be deducted.

What is the practical significance of this mechanism? Developers can accurately estimate storage costs and even automate renewal with smart contracts. More interestingly, the cyclical fund binding also opens the door for future secondary markets—you can transfer unused storage cycles. This turns storage resources from a one-time expense into truly tradable on-chain assets.

In summary, Walrus's storage system is not just a simple physical space marketplace. It is a dynamic economic model driven by on-chain events and maintained through node collaboration. For users genuinely interested in the future of Web3 decentralized storage, this design approach is far more worth paying attention to than just price comparisons.