A data storage device is presented that includes a plurality of storage drives each comprising an associated drive Peripheral Component Interconnect Express (PCIe) interface. The data storage device also includes a control system configured to receive, over a host PCIe link, write operations for storage of data by the data storage device. The control system is configured to process the write operations against storage allocation information to apportion the data for storage among more than one of the storage drives, and transfer corresponding portions of the data to associated storage drives over corresponding drive PCIe interfaces.