A storage management method, comprising: detecting, during a pre-set length of time, a first writing amount per time unit of service data of a target network service in a target storage; determining a first amount of an over-provisioning storage to be set for a basic storage capacity, the basic storage capacity being a fixed storage capacity provided by the target storage for the target network service, the first amount of the over-provisioning storage corresponding to the first writing amount per time unit according to a pre-stored correspondence between a writing amount per time unit, the basis storage capacity and an amount of an over-provisioning storage, wherein, in the correspondence, the amount of the over-provisioning storage increases with an increase of the writing amount per time unit; and setting the over-provisioning storage for the target network service in accordance with the determined first amount of the over-provisioning storage, wherein the method further comprises: determining a first data cleaning threshold corresponding to the first write amount per time unit according to a pre-stored correspondence relationship between the writing amount per time unit, the basic storage capacity and a data cleaning threshold, wherein the data cleaning threshold is a total data amount of the target network service stored in the target storage used for triggering the target storage to perform invalid data cleaning on the target network service, and wherein a greater writing amount per time unit of the service data of the target network service corresponds to a smaller data cleaning threshold; and setting the data cleaning threshold of the target network service in the target storage as the determined first data cleaning threshold. detecting, during a pre-set length of time, a first writing amount per time unit of service data of a target network service in a target storage; determining a first amount of an over-provisioning storage to be set for a basic storage capacity, the basic storage capacity being a fixed storage capacity provided by the target storage for the target network service, the first amount of the over-provisioning storage corresponding to the first writing amount per time unit according to a pre-stored correspondence between a writing amount per time unit, the basis storage capacity and an amount of an over-provisioning storage, wherein, in the correspondence, the amount of the over-provisioning storage increases with an increase of the writing amount per time unit; and setting the over-provisioning storage for the target network service in accordance with the determined first amount of the over-provisioning storage, wherein the method further comprises: determining a first data cleaning threshold corresponding to the first write amount per time unit according to a pre-stored correspondence relationship between the writing amount per time unit, the basic storage capacity and a data cleaning threshold, wherein the data cleaning threshold is a total data amount of the target network service stored in the target storage used for triggering the target storage to perform invalid data cleaning on the target network service, and wherein a greater writing amount per time unit of the service data of the target network service corresponds to a smaller data cleaning threshold; and setting the data cleaning threshold of the target network service in the target storage as the determined first data cleaning threshold. determining a first data cleaning threshold corresponding to the first write amount per time unit according to a pre-stored correspondence relationship between the writing amount per time unit, the basic storage capacity and a data cleaning threshold, wherein the data cleaning threshold is a total data amount of the target network service stored in the target storage used for triggering the target storage to perform invalid data cleaning on the target network service, and wherein a greater writing amount per time unit of the service data of the target network service corresponds to a smaller data cleaning threshold; and setting the data cleaning threshold of the target network service in the target storage as the determined first data cleaning threshold.