SSTable 3.0 Format in ScyllaDB

ScyllaDB supports the same SSTable format as Apache Cassandra 3.0. You can simply place SSTables from a Cassandra data directory into a ScyllaDB uploads directory and use the nodetool refresh command to ingest their data into the table.

Looking more carefully, you will see that ScyllaDB maintains more, smaller, SSTables than Cassandra does. On ScyllaDB, each core manages its own subset of SSTables. This internal sharding allows each core (shard) to work more efficiently, avoiding the complexity and delays of multiple cores competing for the same data

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