1. A method for data storage, comprising: holding a definition of a speculative readout mode for readout in a storage device, in which the storage device is requested to read a data unit having a data unit size, and in response the storage device retrieves a storage page that contains the data unit and has a storage page size larger than the data unit size, and retains the storage page in preparation for subsequent requests; coordinating activation of the speculative readout mode; and performing a readout command using the speculative readout mode.