Abstract
There are many PCs in a PC room. For example, there are 500 PCs in our University. Each PC has a HDD, which is typically not full. If the disk utilization is 50% and each PC has a 240GB HDD, there is 60TB (500x120GB) free disk space. The total size of the unused capacity of these HDDs is nearly equal to the capacity of a file server. Institutions, however, tend to buy expensive appliance file servers. In this paper, we propose an efficient large-scale storage system that combines client free disk space. We have developed a java-based toolkit to construct a virtual large-scale storage system, which we call VLSD (Virtual Large-scale Disk). This toolkit is implemented in Java and consists of RAID (Redundant Arrays of Inexpensive/Independent Disks) and NBDs (Network Block Device). Using VLSD, we show how to construct a large disk that consists of multiple free spaces distributed over networks. VLSD supports typical RAID and other utility classes. These can be combined freely with one another.
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© 2007 Springer-Verlag Berlin Heidelberg
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Chai, E., Uehara, M., Mori, H., Sato, N. (2007). Virtual Large-Scale Disk System for PC-Room. In: Enokido, T., Barolli, L., Takizawa, M. (eds) Network-Based Information Systems. NBiS 2007. Lecture Notes in Computer Science, vol 4658. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74573-0_49
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DOI: https://doi.org/10.1007/978-3-540-74573-0_49
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-74572-3
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