Most storage systems rely on replication: copying the same data multiple times to ensure availability. While simple, this method becomes extremely expensive as security requirements increase. Walrus avoids this trap by using erasure coding.
With erasure coding, data is split into multiple pieces and spread across storage nodes. Only a subset of these pieces is needed to reconstruct the original data. This allows Walrus to tolerate failures and malicious behavior without storing excessive copies.
The result is a storage network that is more cost-efficient, faster to recover, and easier to scale. Walrus shows that strong security does not require wasteful redundancy.
WAL
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