Next: Data Models in the VO: How Do They Make Code Better? ... Pirenne, B. 2003, in ASP Conf. ... In this review, the current status and expected evolution of data storage technologies in the next few years is considered in the light of the expected needs of constantly growing astronomical data volumes. Questions such as ``should we abandon tapes?'' and ``why don't we just transfer all data over the net?'', or ``Why do we give data out in the first place? ... Technology . ... Hard Disk . ...