| US 7,516,168 B2 | ||
| Program for monitoring update activity in a data storage facility | ||
| Douglas E. LeCrone, Hopkinton, Mass. (US); Daniel A. Murphy, Hopkinton, Mass. (US); and Denis Hall, Chelmsford, Mass. (US) | ||
| Assigned to EMC Corporation, Hopkinton, Mass. (US) | ||
| Filed on Oct. 23, 2003, as Appl. No. 10/692,285. | ||
| Application 10/692285 is a continuation of application No. 09/344999, filed on Jun. 25, 1999, granted, now 6,662,197. | ||
| Prior Publication US 2004/0128326 A1, Jul. 01, 2004 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 17/30 (2006.01) | ||
| U.S. Cl. 707—204 [707/201; 707/202; 707/203; 711/130; 711/161; 711/162] | 41 Claims |
| 1. A program stored in a computer readable storage medium for obtaining information about the number of updates to data blocks
in data block locations in a data storage facility over a time interval, said program comprising processes for providing:
A) a definition of a data group set of at least one of the data blocks,
B) a definition of an interval corresponding to the time period for which update information is desired,
C) a recording, during the defined interval, of only a first update to each data block location for data in the data group
set,
D) a transfer to the data group set of the information obtained by said recording after the defined interval,
E) a determination, from the information in the data group set, the total number of data block locations in the data group
set that were updated at least one time during the defined interval, and
F) a conversion of the total number of data block locations changed during the defined interval into bandwidth based information
about all the updates during the defined interval.
|