All, Today we discussed which URI's to support in the proposed file staging extensions. Particularly for SC07. I suggest the following URI's ftp http mailto because they do not require us to address the issue of delegation in advance of SC07. (As I said at the last OGF I do not think the delegation approach in the delegation proposal is a good idea). Of course I think ByteIO/RNS is a good idea - but I don't expect much support for that. (We support it.) Note that there exists a standard format for an ftp URI which includes username/password. Therefore one could include the information in the JSDL document without any need for delegation. (I do not know gridFTP well, perhaps it supports a similar set of uri options, eliminating the need for passing a delegated credential.) On the other hand if we choose to support gridFTP, scp, or any other protocol that requires a delegated credential, then we must also agree on a delegation strategy . with a potential need to replace it later. (By the way, we are not familiar with a standard URI format for scp.) Right now we (the Virginia Genesis II group) support ftp, http, mailto, and RNS with delegated credentials (not via the same mechanism Marty is proposing). A