Patent ID: 7657577
Filing Date: 2010-02-02
Classification: G06F,Y10S

Abstract:
1. A method, comprising: providing a first storage pool including at least a first aggregate including a plurality of active and inactive files written in a sequential ordering to the first aggregate; generating a second aggregate in a second storage pool; determining active versions of files in the first aggregate that satisfy at least one criterion; copying the determined active versions of files from the first aggregate to the second aggregate in the second storage pool in the sequential ordering of the first aggregate, wherein the second aggregate does not include inactive versions of files in the first storage pool, wherein files are stored sequentially in the first and second aggregates, and wherein the active versions of the files in the first aggregate are written sequentially to the second aggregate such that only the active version of the files are stored sequentially in the second aggregate; and maintaining aggregate file information having an entry for each file stored in the first aggregate, wherein each entry indicates a file identifier, a first aggregate identifier, and an ordering of the file in the first aggregate, wherein the sequential ordering of files in the first aggregate is indicated by the order indicated in the entries for the files of the first aggregate in the aggregate file information, wherein copying the files from the first aggregate in the sequential ordering comprises copying the files according to the order indicated in the entries of the files in the first aggregate in the aggregate file information.