Scale-up and scale-out deployments
You can use PowerStore certified storage in both single-host (scale-up) and multihost (scale-out) environments.
- Single-host environments: The database must fit into the RAM of a single server. Single-host environments are preferred for OLTPtype workloads such as S/4HANA and SAP Business Suite on SAP HANA.
- Multihost environments: The database tables are distributed across the RAM of multiple servers. Multi-host environments use worker and standby hosts. Worker hosts are active components that accept and process database requests. A standby host has database services running but no data in RAM. When a worker host fails, a standby host takes over its role, a process known as host autofailover. Because the in-memory capacity in these deployments can be high, scale-out SAP HANA clusters are suited for online OLAPtype workloads with large datasets, such as SAP Business Warehouse on SAP HANA and BW/4HANA. By default, SAP supports scale-out deployments of up to 16 worker hosts. If more than 16 worker hosts are needed, a site-specific SAP certification is required.
For more information about S/4HANA and SAP BW/4HANA, see Pre-defined Table Placement Scenarios on the SAP Help Portal.