A primary storage device (24) orders a plurality of data writes by associating data writes begun after a first time and before a second time with a first chunk of data (52), associating data writes begun after the second time with a second chunk of data (54) different from the first chunk of data, and, after completion of all writes associated with the first chunk of data, initiating transfer of writes associated with the first chunk of data to a secondary storage device (26). (FIG. 1) 0 EMC CORPORATION Address of the Applicant: 176 SOUTH STREET, HOPKINTON, MA 01748, UNITED STATES OF AMERICA 01648/KOLNP/2005 A 1648/KOLNP/2005 INDIA 2009-03-27T15:58:47Z 2006-10-27 2005-08-17 424334 G06F 12/00 WO 04/095289 18148 0 333 USA 2003-03-25 10/396786; 10/607041; 10/606699 2006-10-27 0 22oqJiLz 2009-04-30T18:56:29Z 6858 EMC CORPORATION 53585 /app_images/6/8/d/2/caei_R2029.png 1648/KOLNP/2005 4425 2008-11-14 225420 EMC CORPOTRATION 6jA7kO4