Virtual storage devices

Details Virtual storage devices Virtual storage devices

2007-07-24

2007-07-24

Lewis, Cheryl (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

10306378

ABSTRACT:
Accessing data includes a host establishing a relationship between a first storage area of a first type containing data and a second storage area of a second type containing pointers to data provided in storage areas of the first type, where the storage areas are provided in a storage device coupled to the host. In response to the host writing data to a particular section of the first storage area after establishing the relationship, the particular section is copied from the first storage area to a third storage area of the first type prior to the write operation being executed. A corresponding pointer of the second storage area is adjusted to point to the third storage area.

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U.S. Appl. No. 10/134,420, filed Apr. 29, 2002.

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