A data access method, comprising: in response to receiving by a processing device a first access request sent from a first access device in a set of access devices to a first storage device in a set of storage devices , sending by the processing device an updated first access request to the first storage device , the sending comprises: acquiring by a processing device identity information of the first access device ; generating by a processing device an updated first access request by including the identity information of the first access device in the first access request; and sending by a processing device the updated first access request to the first storage device ; in response to receiving data from the set of storage devices , determining by a processing device identity information included in the data; and in response to the determined identity information being associated with the identity information of the first access device , sending by a processing device the data to the first access device , characterized in that the method further comprises: in response to receiving a second access request sent from a second access device in the set of access devices to a second storage device in the set of storage devices , determining by a processing device whether the first access request has been sent; and in response to determining that the first access request has been sent, sending by a processing device an updated second access request to the second storage device , wherein the updated second access request is generated by including identity information of the second access device in the second access request. acquiring by a processing device identity information of the first access device ; generating by a processing device an updated first access request by including the identity information of the first access device in the first access request; and sending by a processing device the updated first access request to the first storage device ; in response to receiving data from the set of storage devices , determining by a processing device identity information included in the data; and in response to the determined identity information being associated with the identity information of the first access device , sending by a processing device the data to the first access device , characterized in that the method further comprises: in response to receiving a second access request sent from a second access device in the set of access devices to a second storage device in the set of storage devices , determining by a processing device whether the first access request has been sent; and in response to determining that the first access request has been sent, sending by a processing device an updated second access request to the second storage device , wherein the updated second access request is generated by including identity information of the second access device in the second access request. in response to receiving a second access request sent from a second access device in the set of access devices to a second storage device in the set of storage devices , determining by a processing device whether the first access request has been sent; and in response to determining that the first access request has been sent, sending by a processing device an updated second access request to the second storage device , wherein the updated second access request is generated by including identity information of the second access device in the second access request. <EOS>