From CFS to DSEFS

The Cassandra File System (CFS) was the default distributed file system in DataStax Enterprise versions 2.0 to 5.0, designed for Hadoop and Spark workloads with temporary storage. However, it has been deprecated and replaced by the improved DataStax Enterprise File System (DSEFS), which is available as an option in DSE 5.0 and became the default distributed file system in DSE 5.1. Unlike CFS, DSEFS separates data storage from metadata storage, with metadata stored in Cassandra tables and file data stored directly on the node's local file system. This design offers several advantages, including better cache efficiency, reduced context switches, and lower connection costs. DSEFS also supports a modern, efficient, scalable, and highly available distributed file system, making it unnecessary to use CFS any longer.

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