Appeal 2007-1951
Application 10/120,016
INVENTION
The invention is directed to a method of providing copies of portions
of data stored on a computer storage device. Claim 1 is representative of the
invention and reproduced below:
1. A method of providing a point-in-time copy of stored data,
comprising:
providing a virtual storage area having a table of pointers that
point to sections of the stored data and to sections of at least one other
storage area, wherein the virtual storage area contains no sections of
data;
in response to a write of new data to a section of the stored data
pointed to by a pointer of the table of the virtual storage area, copying
the section of stored data to a section of the at least one other storage
area prior to the write, causing a pointer of the virtual storage area to
point to the section of the at least one other storage area, and writing
the new data to the section of the stored data;
in response to a request for accessing data of the virtual storage
area, determining which particular one of the other storage areas
contain the data; and
accessing the data on the particular one of the other storage
areas using the table of pointers.
REFERENCES
The references relied upon by the Examiner are:
Grummon US 6,460,054 B1 Oct. 1, 2002
(filed Dec. 16, 1999)
West US 6,446,176 B1 Sep. 3, 2002
(filed Mar. 9, 2000)
Hitz US 5,819,292 Oct. 6, 1998
Brady US 5,784,698 Jul. 21, 1998
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: September 9, 2013