Long term file migration: development and evaluation of algorithms
Communications of the ACM
A study of file sizes and functional lifetimes
SOSP '81 Proceedings of the eighth ACM symposium on Operating systems principles
Disk cache replacement algorithm for storage resource managers in data grids
Proceedings of the 2002 ACM/IEEE conference on Supercomputing
Accurate Modeling of Cache Replacement Policies in a Data Grid
MSS '03 Proceedings of the 20 th IEEE/11 th NASA Goddard Conference on Mass Storage Systems and Technologies (MSS'03)
Hi-index | 0.00 |
The STOCHOPT automatic file migration policy (proposed by A.J. Smith) minimizes the expected retention and recall costs of an abitrarily sized file. We consider the application of the STOCHOPT policy to a file system in which the file inter-reference time (IRT) distributions are characterized by strictly monotonically decreasing hazard rates (SDHR) (also known as decreasing failure rates, DFR). We show that in this case the STOCHOPT policy can be simply stated in terms of a scaled hazard rate, i.e., the hazard rate divided by the file size. Such decreasing failure rate distributions have been used by Smith to model empirically observed file inter-reference times.