Automated power control policies based on application-specific redundancy characteristics

A program product comprising:

• a computer usable medium having computer readable program code embodied therein, the computer readable program code in said program product being effective in executing the steps of:
• (a) determining the workload of each server of a first tier of scalable redundant servers which provide an application service;
• (b) determining the topology of the application service wherein said topology determination includes a first count of the total number of active first-tier servers and a correspondence between a first component of the application service and the first-tier server on which the first component is executed;
• (c) transitioning a first-tier server between the application service and a free pool of first-tier servers based upon said workload determination;
• and
• (d) controlling the power applied to each of the servers of the free pool of first-tier servers according to a first predetermined power management policy and based upon said topology determination.

A method comprising:

• (a) determining the workload of each server of a cluster of servers which provide an application service;
• (b) determining the topology of the application service wherein said topology determination includes a correspondence between a first component of the application service and the server on which the first component is executed;
• and
• (c) setting the power state of one server of the cluster of servers based upon said workload determination and said topology determination.

A method comprising:

• (a) determining the workload of each server of a first tier of scalable redundant servers which provide an application service;
• (b) determining the topology of the application service wherein said topology determination includes a first count of the total number of active first-tier servers and a correspondence between a first component of the application service and the first-tier server on which the first component is executed;
• (c) transitioning a first-tier server between the application service and a free pool of first-tier servers based upon said workload determination;
• and
• (d) controlling the power applied to each of the servers of the free pool of first-tier servers according to a first predetermined power management policy and based upon said topology determination.

Apparatus comprising:

• a workload monitor which detects the workload of each server of a cluster of servers which provide an application service;
• a topology sensor which determines the topology of the application service including a correspondence between a first component of the application service and the server on which the first component is executed;
• and
• a power controller which sets the power state of one server of the cluster of servers based upon the workload as determined by said workload monitor and the topology as determined by said topology sensor.

Apparatus comprising:

• a workload monitor which detects the workload of each server of a first tier of scalable redundant servers which provide an application service;
• a topology sensor which determines the topology of the application service including a first count of the total number of active first-tier servers and a correspondence between a first component of the application service and the first-tier server on which the first component is executed;
• a move module which transitions a first-tier server between the application service and a free pool of first-tier servers based upon the workload as determined by said workload monitor;
• and
• a power controller which sets the power state of each of the servers of the free pool of first-tier servers according to a first predetermined power management policy and based upon the topology as determined by said topology sensor.