A method for data storage may be provided. The method may include storing metadata of an image file onto a first storage device. The method may include dividing image data of the image file into at least one sub-image data set. The method may also include storing each sub-image data set of the at least one sub-image data set, onto a second storage device of at least one second storage device. The method may further include storing access information of the at least one second storage device onto the first storage device.