Increased in-line deduplication efficiency

A system for increased in-line deduplication efficiency in a computing environment, the system comprising:

• a processor device operable in the computing environment, wherein the processor device is adapted for:
• incrementing the size of data samples from fixed size data chunks for each nth iteration for reaching a full size of an object requested for in-line deduplication;
• calculating in nth iterations hash values on data samples from fixed size data chunks extracted from the object;
• and
• matching in a nth hash index table the calculated nth iteration hash values for the data samples from the fixed size data chunks with a corresponding hash value of existing objects in storage, wherein the nth hash index table is built for each nth iteration of the data samples belonging to the fixed data chunks.

A computer program product for increased in-line deduplication efficiency in a computing environment by a processor device, the computer program product comprising a computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:

• computer code for incrementing the size of data samples from fixed size data chunks for each nth iteration for reaching a full size of an object requested for in-line deduplication;
• computer code for calculating in nth iterations hash values on data samples from fixed size data chunks extracted from the object;
• and
• computer code for matching in a nth hash index table the calculated nth iteration hash values for the data samples from the fixed size data chunks with a corresponding hash value of existing objects in storage, wherein the nth hash index table is built for each nth iteration of the data samples belonging to the fixed data chunks.