Installing Apache Cassandra 3.0 

Ways to install Cassandra.

About DataStax Cassandra documentation
DataStax no longer provides the DataStax Community version of Apache Cassandra™ or the DataStax Distribution of Apache Cassandra. This documentation is for the Datastax Distribution of Apache Cassandra included in DataStax Enterprise 5.0, not open-source Cassandra. See DataStax support for Apache Cassandra and the Apache Cassandra documentation.
To download and install open-source Cassandra, see Apache Cassandra™.