A method stores a plurality of sequentially ordered data samples in a plurality of sequential storage segments such that one of the plurality of sequentially ordered data samples is stored at one of the plurality of sequential storage segments which is non-sequential to another of the plurality of sequential storage segments in which an immediately preceding one of the plurality of sequentially ordered data samples is stored. Another one of the stored plurality of sequentially ordered data samples, other than a first ordered one of the plurality of sequentially ordered data samples, is overwritten with a further data sample, the further data sample being immediately sequential to a last ordered one of the plurality of sequentially ordered data samples.