SAP Adaptive Computing Environments and Redwood Server
Data centers are becoming more and more virtualized, allowing greater optimization of resources and processes. Applications can be started, stopped and moved on demand to other servers. SAP has introduced SAP Adaptive Computing to address the needs of its customers. Redwood Server uses SAP Adaptive Computing Controller (SAP ACC) to automate starting, stopping and relocating SAP ACC services. You use the SAP_ACC_Controller process definition for this purpose.
You always need to provide the following parameters:
- Url - URL to the SAP ACC server web service http://
: /ACCGW/ACC(for example: http://sapacc.example.com:50200/ACCGW/ACC) - Username - username of a user that is authorized to manage SAP ACC services
- Password - password of the user
- Command - the command to perform, can be
STOP,STARTandRELOCATE - Service ID - the ID of the service to manage
Stopping Services
To stop a service, you do not need to provide any more parameters, the SAP ACC will identify the host the service is running on and request the shutdown of the service.
Starting and Relocation Services
The behavior of the SAP ACC for the commands START and RELOCATE depends on the value of the parameter Hostname. The SAP ACC checks if the target host is available, not running any other services, and provides enough resources for running the new service. You can force the service to run on a server that does not provide enough resources according to the SAP ACC by using ForceSmallServer parameter. When this parameter is set to true, the SAP ACC will start the service on the target host regardless of resources.
Hostname is set
- START - The SAP ACC will start the requested service on the host
<hostname>, provided is meets the requirements. - RELOCATE - The SAP ACC will stop the requested service and start it on the host
<hostname>, provided the new target server meets the requirements.
Hostname is not set
The host where to start the service is determined by the internal assignment rules of the SAP ACC.