Hi Dave, I think the pictures give a nice illustration of the basic structure. On the 2 diagrams you have a line going directly from the Storage Service to the Stored Resources Service. Should this line actually go via an interface on one or other of the services? Cheers, Stephen. -----Original Message----- From: owner-ogsa-d-wg@ggf.org [mailto:owner-ogsa-d-wg@ggf.org] On Behalf Of Dave Berry Sent: 22 January 2006 16:37 To: ogsa-d-wg@gridforum.org Subject: [ogsa-d-wg] The big picture Dear All, I've been asked to provide a diagram that shows the "big picture" of the OGSA Data Architecture. This would be used in the OGSA 1.5 document and in the overview section of our document(s), and perhaps also in powerpoint presentations. I've come up with the pair of diagrams and associated text in the attachment. Please take a look. Best wishes, Dave Berry Research Manager, National e-Science Centre 15 South College St., Edinburgh Tel: +44 131 6514039