Availabilities and costs of reliable Fat-Btrees

The Fat-Btree is expected to be used as a parallel directory structure for high performance and highly reliable data intensive systems, such as databases and file systems. Though the Fat-Btree is essentially high performance, it needs to be highly reliable as well. In order to achieve high reliability, we introduce five configuration methods. We show not only their steady-state and computational availabilities but also cost related comparisons, so as to evaluate the properties of these configurations.