| 摘要 |
<p>System, method and computer program for maintaining cache coherency amongst a plurality of caching storage controllers (28, 29) operating in unison for supplying data in response to requests from one or more host computers. The method comprises the steps of defining a reservation data structure to maintain reserved, partial, and full ownership status of data extents that are part of the logical unit or storage volume, and using the reservation data structure to verify that a new update to the data is allowed (203-215).</p> |
