As the amount of
data in a database system grows, the system’s hardware needs to be upgraded to
accommodate the added data volume/workload.
There are two
options available in SAP HANA : Scale-Up Or Scale-Out.
Scale-up
- This means increasing the size of one physical machine by increasing the
amount of resources(RAM/CPU) available for processing.
Scale-out-
This means combining multiple independent nodes/computers into one system.
Technology has
constraints on the CPU/memory configuration , that means there is a limitation
on the amount of memory can be addressed by CPU cores.
Please note : At the time of writing this article , SoH(Suit
on HANA systems , eg ECC , CRM , SCM etc) can only be scaled-up , and the
maximum of 12 TB of RAM is certified. There is no scale-out option for SoH.
For rest of the
business use cases(For example BW on HANA or Data marts) we can go with either
Scale-Up or Scale-Out. In this case the maximum for Scale up and Scale Out can
be 3TB/node.(4TB/node is under approval processing).
Below information is
gathered from here.
One can find the
HANA Hardware Certified vendor list along with their product offering at : http://global.sap.com
A scaled out HANA system looks like following in the HANA Studio. Below shown system is an 7 (6 Worker + 1 Standby) node system.
A scaled out HANA system looks like following in the HANA Studio. Below shown system is an 7 (6 Worker + 1 Standby) node system.
