Islandia-based CA Inc. Tuesday, May 28, 2013, won a new...

Islandia-based CA Inc. Tuesday, May 28, 2013, won a new patent for a computer backup system. Credit: Kevin P. Coughlin, 2012

Islandia-based CA Inc. received a U.S. patent Tuesday for a system to back up computer data by identifying which files have been modified and which ones haven’t.

The system uses code called a metadata signature to compare files on a computer with those already backed up. The idea is to streamline the computer backup process by only backing up new or modified files rather than creating entirely new archives every time that can take up storage space. If data is lost, the entire archive can be reconstructed by using a combination of older and newer backups.

The method was invented by Chandra Reddy and Prashant Parikh, according to the patent filing.

On the latest episode of "Sarra Sounds Off," Newsday's Gregg Sarra takes a look at the football awards given out in Nassau and Suffolk,  plus Jared Valluzzi and Jonathan Ruban with the plays of the year. Credit: Newsday/Steve Pfost, Michael A. Rupolo

Sarra Sounds Off, Ep. 14: LI football awards On the latest episode of "Sarra Sounds Off," Newsday's Gregg Sarra takes a look at the football awards given out in Nassau and Suffolk, plus Jared Valluzzi and Jonathan Ruban with the plays of the year.

On the latest episode of "Sarra Sounds Off," Newsday's Gregg Sarra takes a look at the football awards given out in Nassau and Suffolk,  plus Jared Valluzzi and Jonathan Ruban with the plays of the year. Credit: Newsday/Steve Pfost, Michael A. Rupolo

Sarra Sounds Off, Ep. 14: LI football awards On the latest episode of "Sarra Sounds Off," Newsday's Gregg Sarra takes a look at the football awards given out in Nassau and Suffolk, plus Jared Valluzzi and Jonathan Ruban with the plays of the year.

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