Dynamic allocation of storage for hierarchical copies

Details Dynamic allocation of storage for hierarchical copies Dynamic allocation of storage for hierarchical copies

2005-11-02

2009-02-10

Bataille, Pierre-Michel (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

Reexamination Certificate

active

07490213

ABSTRACT:
A method for managing multiple logical volumes in a data storage system, including providing physical storage of a given capacity within the data storage system, and adding a logical volume of a given size within the data storage system so as to cause a total amount of logical storage of the logical volumes in the data storage system to be greater than the given capacity of the physical storage. The method includes verifying, in response to a write command to store data in the logical volume, that a physical storage location is available in the physical storage and, if the physical storage location is available, then storing the data at the physical storage location.

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