Patent ID: 8621170

Claim:
A system for updating an existing data set on a tiered data storage system, the system comprising: logic integrated with and/or executable by a hardware processor, the logic being configured to: receive a request to open an existing data set, the open indicating a write operation for the existing data set; receive new data to write to the existing data set; determine that the existing data set is stored on a lower tier of a tiered data storage system; determine whether the existing data set on the lower tier is capable of being updated by appending the new data to an end of the existing data set; create a temporary data set on a higher tier of the tiered data storage system comprising the new data when the existing data set is capable of being updated by appending the new data to an end of the existing data set; associate the temporary data set on the higher tier of the tiered data storage system with the existing data set on the lower tier of the tiered data storage system; and create a write indicator associated with the temporary data set indicating that the temporary data set belongs at the end of the existing data set.