In a method of writing data to a file system on a solid state drive, a file stream is opened for writing to a file in the file system. A life expectancy value predicting a length of time the data to be written will be stored in the file system is attached to the file stream. The data is written to the file stream and stored on the solid state storage device according to the life expectancy value attached to the data. In one embodiment, a unique identifier may be used as the life expectancy value for writing a group of related files predicted to be stored in the file system for substantially the same length of time. The life expectancy value may be predicted based on a file type of the file being written. The life expectancy value may be stored as metadata for the file being written.