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 (220, 330) 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.