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Virtual machine (VM) replication provides a software solution of for business continuity and disaster recovery through application-agnostic hardware fault tolerance by replicating the state of primary VM (PVM) to secondary VM (SVM) on a different physical node. Unfortunately, current VM replication approaches suffer from excessive overhead, which severely(More)
Virtualization is gaining popularity in cloud computing and has become the key enabling technology in cloud infrastructure. By replicating the virtual server state to multiple independent platforms, virtualization improves the reliability and availability of cloud systems. Unfortunately, existing Virtual Machine (VM) replication solutions were designed only(More)
High-quality I/O virtualization (that is, complete device semantics, full-feature set, close-to-native performance and real-time response) is critical to both server and client virtualizations. Existing solutions for I/O virtualization (e.g., full device emulation, paravirtualization and direct I/O) cannot meet the requirements of high-quality I/O(More)
Embedded systems are making rapid changes and becoming increasingly sophisticated. To make full use of all the hardware resources on the system, multi OS environments and virtualization are both feasible ways but either needs lots of porting efforts or suffers performance degradation without hardware support for virtualization. We propose a virtualization(More)
Memory is the most frequently failing component that can cause system crash, which significantly affects the emerging data centers that are based on system virtualization (e.g., clouds). Such environment differs from previously studied large systems and thus poses renewed challenge to the reliability, availability, and serviceability (RAS) of today's(More)
The high porosity and microstructure of bio-aggregates are fundamental to their physical properties. Typically they have a low density and a complex pore structure. This has two principal effects. In the first instance, low density is associated with low strength, but also with low thermal conductivity. For this reason most bio-aggregates are not suitable(More)
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