Patent ID: 7934056

Claim:
A computer system of for managing the allocation of space on data storage devices, said computer system comprising: at least one processor configured to perform a method, said method comprising: obtaining weights for at least a subset of a plurality of data storage devices, said subset comprising at least two data storage devices, and wherein said obtaining comprises using a first weighting procedure based on a first parameter; allocating space on multiple data storage devices of said at least a subset of data storage devices in proportion to weights obtained for the multiple data storage devices, wherein said allocating is independent of access patterns of data to be accommodated by the allocated space in that said allocating is performed without a priori knowledge of said access patterns; subsequently dynamically adjusting one or more of the weights using at least one second weighting procedure different from said first weighting procedure, wherein said at least one second weighting procedure is based on at least one second parameter, wherein one or more parameters of said at least one second parameter differ from said first parameter; and allocating space on one or more data storage devices using said one or more dynamically adjusted weights.