Patent ID: 6405284
Filing Date: 2002-06-11
Classification: G06F

Abstract:
A method for managing a storage system having a plurality of data storage devices comprising:spreading data evenly across a first set of data locations within a first plurality of data storage devices in the storage system; reconfiguring the storage system to establish a second plurality of data storage devices, the second plurality of data storage devices having a different combination of storage devices than the fist plurality of data storage devices; and dynamically moving the data in response to a change in the configuration of the storage system to reestablish an even spread of the data across the second plurality of data storage devices, the amount of data moved being approximately proportional to the change in storage capacity of the storage system as a result of the change in configuration, wherein dynamically moving the data changes at least part of the first set of data locations to form a second set of data locations for the data within the second plurality of data storage devices.