Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2005-04-19
2005-04-19
Vital, Pierre M. (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S114000, C711S162000, C711S165000, C707S793000, C710S032000
Reexamination Certificate
active
06883076
ABSTRACT:
Systems, methods, apparatus and software can utilize an extent guard to prevent modification (including relocation) of data in the storage resource while a third-party copy operation directed at the storage resource is occurring. A data transport mechanism such as a data restore application provides an extent list to the extent guard, which monitors read and/or write activity to storage resources described by the extent list. The data transport mechanism requests a data mover to perform a third-party copy operation whereby data is moved from a data source to the storage resource. If a modification attempt is made on the portion of the storage resource described by the extent list, the extent guard stalls the modification attempt until the third-party copy operation is aborted.
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Working Draft, Project T10/1416-D, Information Technology—SCSI Primary Commands—3 (SPC-3), Revision 03, Reference No. ISO/IEC 14776-313: 200x, ANSI NCITS (American National Standards Institute, Inc). ***;200x, Jan. 10, 2002, pp. iii-xxiv & 1-330.
Campbell Stephenson Ascolese LLP
Scolese Marc R.
Veritas Operating Corporation
Vital Pierre M.
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