* Create files that contain more than a single time step and
aggregate those.
I suspect that the DODS aggregation server is slow in part because
it is being asked to do file IO on thousands of files when you
ask for a time series. If this is the case, creating yearly or
even monthly files out of your snapshots and then stringing those
together with aggregation should solve the problem. The drawback
here is that you have to reformat your data.
The consensus seems to be that the GDS can handle this job (though I'm
hoping the Aggregation server folks have some suggestions for tuning and
caching that can help it do a better job).