SAP HANA Architecture
What is SAP HANA
SAP HANA is an In-memory column oriented
RDBMS developed by SAP-AG.
It is a combination of Hardware and Software
which integrates different components i.e.HANA Database,SLT(SAP Landscape
Transformation Replication,DXC(Direct Extractor Connection).
SAP HANA Index Server
The most important server in the architecture
is the Index server. The actual data is contained here and the engines that
process this data are also present in the index server itself. It has multiple
components and its architecture will be taken up as a separate topic in the
next tutorial.
SAP
HANA Name Server
Stores information about the
topology of the SAP HANA System. SAP HANA can also run on multiple hosts. In
these cases, the name server knows where each component runs and also knows
which data is located on which server.
SAP
HANA Preprocessor Server
Whenever a text analysis
functionality is called upon by the index server, the preprocessor server
answers such requests.
SAP
HANA Statistics Server
This collects data about the
resource allocation, performance and status of the SAP HANA system. It keeps a
regular update on the health check of the HANA appliance.
SAP
HANA XS Server / XS Engine
The XS Engine allows external
applications to access the data models in the SAP HANA database via XS Engine
Clients. It transforms the persistence model in the database into consumption
model for external clients to be exposed via HTTP/HTTPS.
