Distributed systems require strategies to detect and recover from failures. Many protocols for distributed systems employ a strategy based on leases, which grant a leaseholder access to data or services for a limited time (the lease period). Choosing an appropriate lease period involves tradeoffs among resource utilization, responsiveness, and system size. We explain these tradeoffs for Jini Ne...

This paper discusses the economic evaluation of different fiber deployment scenarios on the optical network layer, based on dark fiber and wavelength lease. Upfront planning based on predicted traffic leads to a network expansion plan which is probably not optimal for the actual traffic evolution. Real Options valuation determines the value of choosing a certain network deployment scenario, tak...

Resource provisioning is one of the main challenges in resource sharing environments such as InterGrid. Recently, many resource management systems in resource sharing environments use lease abstraction and virtual machines for provisioning. In resource sharing environments resource providers serve requests from external (grid) users along with their own local users. The problem arises when ther...

Resource provisioning is one of the main challenges in resource sharing environments such as InterGrid. Recently, many resource management systems in resource sharing environments use lease abstraction and virtual machines for provisioning. In resource sharing environments resource providers serve requests from external (grid) users along with their own local users. The problem arises when ther...

our Inspectors from six months to one year. There was also an urgent need to establish an Emergency Relief & Welfare Department, as well as a Research Depart' ment in Child Welfare. These facts, coupled with the expiry of the lease on our old and inadequate Headquarters building, forced us into the additional heavy expense of a move to new offices. Our new Headquarters has a 940 year lease and ...