LHC Computer Grid - Rollout
> [mailto:[log in to unmask]] On Behalf Of Rod Walker
said:
> I don`t think anyone answered this. I thought the move from
> classic SE to
> DPM allowed the files to stay(unlike for dcache). I heard
> this somewhere
> but can`t find it written down now.
> If the paths and hostname will stay the same, i.e. the sfn's are
> unchanged, then you don`t need to do anything.
The sfns might stay the same but the SURLs can't, at the least the
scheme changes from sfn: to srm:. Also I think ownership and/or
permissions have to change. There have been repeated requests from the
UK for many months for a migration strategy, but as far as I know
nothing has emerged so far.
> If you have to move or
> reregister data then RAL certainly have experience of doing this.
I think RAL ran the old and new SEs in parallel for several months,
which may well be the best way, but small sites don't necessarily have
the resources to do it.
Stephen
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