公开(公告)号：CA2566503A1

公开(公告)日：2005-11-17

申请号：CA2566503

申请日：2005-04-25

Applicant: IBM

Inventor： BEN-DOR SHIRA ,  KREDI AMIR ,  BUTTERWORTH HENRY ,  NISSAN-MESSING ORIT ,  WOLMAN ADAM ,  ZLOTNICK AVIAD

IPC: G06F11/20

Abstract: A data storage system including at least one storage controller having a first color policy and operative to store data onto a first data storage unit at a primary site as part of a current color of the primary site, at least one storage controller having a second color policy and operative to store data onto a second data storage unit at the primary site as part of the current color, and a color control node operative to provide each of the controllers with new color information while maintaining the integrity of dependent writes across color boundaries.