> > concerns.
> 
> Have you demonstrated a performance problem with trying to keep it
> elsewhere?  (I mean, has your team which is doing the work tried it
> other ways, e.g. keeping a separate "ifile"-like entity for example,
> and shown that they result in unreasonable performance?)
> 
> "If not, why are you optimizing it?!"
> 
> 
> Naively, in thinking about the problems inherent in handling large
> data sets/files and data migration to/from tape, i'd think that an
> extra local file lookup ... would not be your performance bottleneck.
> 8-)
> 

I agree. The only reason to be worried about pieces off to the side is it
increases the likelihood of failure. For this stuff performance may be a
non-issue.