Patent 7640262 was granted and assigned to EMC on December, 2009 by the United States Patent and Trademark Office.
Described are techniques for managing an index structure used to access data portions. A token having a token value for a data portion is provided. An entry in said index structure for said data portion is provided. The index structure is accessed using said token value as a key to determine said entry in said index structure for said data portion. The entry is allocated to have a location in accordance with said token value.