公开(公告)号：AT514993T

公开(公告)日：2011-07-15

申请号：AT03769672

申请日：2003-10-27

Applicant: IBM

Inventor： BIRAN OFER ,  HARPER RICHARD ,  KRISHNAKUMAR SRIRAMA ,  MACKENZIE BRUCE ,  PRUETT GREGORY ,  YASSOUR BEN-AMI

IPC: G06F9/50 ,  H04L29/06 ,  H04L29/08

Abstract: Power and redundancy management policies are applied individually to the tiers of redundant servers of an application service such that power is reduced while maintaining a high level of system availability. Servers which are determined to be relatively inactive are moved to a free pool. Certain servers of the free pool are maintained in a hot standby state, while others are powered-off or set to operate in a low power mode. During times of high load, the servers in the hot standby state can be provisioned quickly into the application service.