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hello Chris, Brew, CAJ (Chris) wrote: >Hi, > >It's loooking likely that dCache is going to be widely deployed >certainly in the UK and probably across LCG and I was thinking about how >this could be integrated with the xrootd deployment we have for use by >babar. > >I can think of two (probably) fairly simple things that would be useful. > >1) Enabling the dcap protocol in the KanAccess.cfg file. As far as I >know the dCache protocol dcap is built into root in the same way that >the xrootd protocol now is so if we can build file urls that start with >dcap:// or dcache:// we could access files directly from dcache. > >2) Adding an xrootd door to dCache. This is obviously more complex but I >guess it would just mean replacing the ofs layer with something that >speaks to dCache rather than the filesystem. This would mean you could >get all the benefits of the xrootd protocol, scaling, redirection, load >balancing, fault tolerance, proxies, etc. with a dCache backend. > >I know the second one has been discussed but are there any plans to >implement it? > are those people proposing that solution (xrootd over dcache over local filesystem) serious ? it should be one or an other but not the two of them on top of each other because there will a lot of overhead for no real gain. cheers, JY