US 6,983,352 B2
System and method for point in time backups
Susann Marie Keohane, Austin, Tex. (US); Gerald Francis McBrearty, Austin, Tex. (US); Shawn Patrick Mullen, Buda, Tex. (US); Jessica Murillo, Hutto, Tex. (US); and Johnny Meng-Han Shieh, Austin, Tex. (US)
Assigned to International Business Machines Corporation, Armonk, N.Y. (US)
Filed on Jun. 19, 2003, as Appl. No. 10/464,877.
Prior Publication US 2004/0260894 A1, Dec. 23, 2004
Int. Cl. G06F 12/16 (2006.01)
U.S. Cl. 711—162 20 Claims
OG exemplary drawing
 
1. A method for backing up data, said method comprising:
initiating a backup, the backup including copying a plurality of data blocks from a first storage area to a second storage area;
receiving a first write request during the backup, the first write request corresponding to a data block included in the plurality of data blocks;
determining, during the backup, whether the data block has been copied to the second storage area; and
logging, during the backup, the data block's location in response to determining that the data block has been copied.