These tools are useful for archiving simulation data 
on kraken.

enzo_archive - a python script to incrementally add snapshots matching
               a given glob pattern (e.g. DD* or RD*) to HPSS. - a useful tool for running a single command 
           on multiple files. - returns the path after the string provided.
	         For example, if in 
		 "./ superman" returns 
		 "simulations/this_run". - archives a single dataset with multiple 
                 tar files. - retrieves datasets archived with

run_archive.qsub - example batch script using hpss queue 
                   to archive simulation data.  This file 
                   contains example of archiving a dataset 
                   to one file and to multiple files.