As an in-memory RDBMS, VoltDB competes directly against products like Oracle TimesTen and IBM's SolidDB. Comparatively, VoltDB's architecture is designed speci

As an in-memory RDBMS, VoltDB competes directly against products like Oracle TimesTen and IBM's SolidDB. Comparatively, VoltDB's architecture is designed specifically to scale out on clusters of commodity servers (TimesTem and SolidDB are single-node datastores), giving Volt access to larger amounts of inexpensive main memory. VoltDB also competes indirectly with NoSQL products like Cassandra, which achieve performance and scale primarily by sacrificing SQL and ACID transactions (Volt preserves both). As an in-memory database, VoltDB offers durability through command logging and disaster recovery via a recently-introduced feature called database (WAN) replication. Hope this helps.