PROCESSES IN SAP HANA
starts all other processes.
keeps all other processes running.
Index server is the main SAP HANA database component
It contains the actual data stores and the engines for processing the data.
The index server processes incoming SQL or MDX statements in the context of authenticated sessions and transactions.
The index server uses the preprocessor server for analyzing text data and extracting the information on which the text search capabilities are based.
The name server owns the information about the topology of SAP HANA system. In a distributed system, the name server knows where the components are running and which data is located on which server.
The statistics server collects information about status, performance and resource consumption from the other servers in the system.. The statistics server also provides a history of measurement data for further analysis.
XS Engine is an optional component. Using XS Engine clients can connect to SAP HANA database to fetch data via HTTP.