YugabyteDB fully utilizes the PostgreSQL query layer to provide consistency and resiliency against issues like server panics, node failures, and disk corruption. Its storage engine differs from Postgres but allows for more RDBMS features than other distributed SQL databases. YugabyteDB's use of LSM Tree / SST Files minimizes the risk of corruption and ensures new writes won't corrupt previous data. In contrast, PostgreSQL's Heap Tables and B-Tree update with random reads that can go to any block, making it more prone to data corruption. YugabyteDB safeguards data by checking validity through independent compactions performed on all nodes, verifying checksums to confirm integrity. Its replication is at a higher layer, reducing the risk of corruption occurring on two different physical writes.