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Combining with software-defined networking and virtualization technology, Network Function virtualization (NFV) has been proposed as an important technology for constructing scalable network. VNF (Virtual Network Function) redeployment is a critical step for dealing with network evolve. Due to the inner state consistency constraints, VNF migration to a new location is major challenge for redeployment...
We use switching power supply technology that is controlled by digital to implement a constant current output circuit. The circuit consists of the implementation of a new slow-start and high stability of output current control method, and is capable to drive a low-power laser diode. Output current can be adjusted from 0 to 3A, with the current stability of 0.50/00.
The COW (copy-on-write) virtual block device supported by many virtual machine monitor (VMM) is very helpful for fast software deployment in large-scale virtualized computing environments. This paper presents an optimized block addressing approach for the COW block device driver in VMM and an on-demand software deployment scheme based on the optimization approach. With our approach, many small-sized...
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