1. A method for repair of source data comprising one or more source objects stored as multiple fragments distributed across multiple storage nodes of a storage system, wherein one or more fragments of the multiple fragments includes redundant data for the one or more source objects, the method comprising: determining that at least one fragment of the multiple fragments is missing from the storage system for a source object of the one or more source objects for which there is no corresponding object instance in a repair queue; adding a corresponding object instance to the repair queue for the source object; and performing repair processing according to a lazy repair policy, wherein repair operation according to the lazy repair policy allows object instances to accumulate in the repair queue for performing repairs at an average repair rate, R.