RETURNING COHERENT DATA IN RESPONSE TO FAILURE OF STORAGE DEVICE WHEN SINGLE INPUT/OUTPUT REQUEST SPANS TWO STORAGE DEVICES

A controller maintains exposed and unexposed locations of a first storage device and a second storage device. In response to receiving a request a perform a write operation to write data in locationsthat span the first storage device and the second storage device, the controller atomically writes an entirety of the data in the unexposed locations of the first storage device. 控制器保持第存储设备和第二存储设备的暴露和未暴露位置。响应于接收到请求，执行写入操作以在跨越所述第存储设备和所述第二存储设备的位置中写入数据，所述控制器在所述第存储设备的所述未暴露位置中原子地写入整个数据。