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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Manzanares, A. Bellam, K. Xiao Qin |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Comput. Sci. & Software Eng., Auburn Univ., Auburn, AL (Manzanares, A.; Bellam, K.; Xiao Qin) |
| Abstract | Large-scale parallel disk systems are frequently used to meet the demands of information systems requiring high storage capacities. A critical problem with these large-scale parallel disk systems is the fact that disks consume a significant amount of energy. To design economically attractive and environmentally friendly parallel disk systems, we developed two energy-aware prefetching strategies for parallel disk systems with disk buffers. First, we introduce a new buffer disk architecture that can provide significant energy savings for parallel disk systems while achieving high performance. Second, we design a prefetching approach to utilize an extra disk to accommodate prefetched data sets that are frequently accessed. Third, we develop a second prefetching strategy that makes use of an existing disk in the parallel disk system as a buffer disk. Compared with the first prefetching scheme, the second approach lowers the capacity of the parallel disk system. However, the second approach is more cost-effective and energy-efficient than the first prefetching technique. Finally, we quantitatively compare both of our prefetching approaches against two conventional strategies including a dynamic power management technique and a non-energy-aware scheme. Using empirical results we show that our novel prefetching approaches are able to reduce energy dissipation in parallel disk systems by 44% and 50% when compared against a non-energy aware approach. Similarly, our strategies are capable of conserving 22% and 30% of the energy when compared to the dynamic power management technique. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 197772 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424416936 |
| ISSN | 15302075 |
| DOI | 10.1109/IPDPS.2008.4536421 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-04-14 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Prefetching Energy conservation Large-scale systems Energy management Power system management Information systems Power generation economics Environmental economics Energy efficiency Energy dissipation |
| Content Type | Text |
| Resource Type | Article |
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