A method and system for transforming a logical data object for storage in a storage device operable with at least one storage protocol, creating, reading, writing, optimization and restoring thereof. Transforming the logical data object comprises creating in the storage device a transformed logical data object comprising a header and one or more allocated accommodation sections with predefined size; sequentially obtaining one or more data chunks corresponding to the transforming logical data object; verifying if obtained data chunks match certain criterion and processing the chunks in accordance with verification results thus giving rise to the processed data chunks, wherein, resulting from said processing, a processed data chunk holds transformed data if the criterion is matched and holds non-transformed data if the criterion is not matches; sequentially accommodating the processed data chunks into said accommodation sections in accordance with an order said chunks received, and facilitating mapping between the data in the logical data object and the data accommodated in the accommodation sections.