\input zb-basic \input zb-ioport \iteman{io-port 02086786} \itemau{Nikolow, Darin; S\l ota, Renata; Kitowski, Jacek} \itemti{Benchmarking tertiary storage systems with file fragmentation.} \itemso{Wyrzykowski, Roman (ed.) et al., Parallel processing and applied mathematics. 4th international conference, PPAM 2001, Na\l \c ecz\'ow, Poland, September 9--12, 2001. Revised papers. Berlin: Springer (ISBN 3-540-43792-4). Lect. Notes Comput. Sci. 2328, 162-169 (2002).} \itemab Summary: In this paper we compare efficiency of two proposed storage management systems with the efficiency obtained for the commercial solution. The developed prototypes make use of index-based retrieving of file fragments, therefore they can be useful for multimedia databases. \itemrv{~} \itemcc{} \itemut{} \itemli{http://link.springer.de/link/service/series/0558/bibs/2328/23280162.htm} \end