Zuse Institute Berlin

Displaying 1-5 of 5 results

  • White Papers // Dec 2011

    Optimal Degree of Optical Circuit Switching in IP-Over-WDM Networks

    In this paper, the authors study the influence of technology, traffic properties and price trends on optimized design of a reference IP-over-WDM network with rich underlying fiber topology. In each network node, they investigate the optimal degree of traffic switching in an optical (lambda) domain versus an electrical (packet) domain,...

    Provided By Zuse Institute Berlin

  • White Papers // Aug 2011

    Flease - Lease Coordination Without a Lock Server

    Large-scale distributed systems often require scalable and fault-tolerant mechanisms to coordinate exclusive access to shared resources such as files, replicas or the primary role. The best known algorithms to implement distributed mutual exclusion with leases, such as Multipaxos, are complex, difficult to implement, and rely on stable storage to persist...

    Provided By Zuse Institute Berlin

  • White Papers // Oct 2010

    Loosely Time-Synchronized Snapshots in Object-Based File Systems

    A file system snapshot is a stable image of all files and directories in a well-defined state. Local file systems offer point-in-time consistency of snapshots, which guarantees that all files are frozen in a state in which they were at the same point in time. However, this cannot be achieved...

    Provided By Zuse Institute Berlin

  • White Papers // Feb 2010

    Fault-Tolerant and Decentralized Lease Coordination for Distributed Systems

    Applications which need exclusive access to a shared resource in distributed systems require a fault-tolerant and scalable mechanism to coordinate this exclusive access. Examples of such applications include distributed file systems and master/slave data replication. The authors present Flease, an algorithm for decentralized and fault-tolerant lease coordination in distributed systems....

    Provided By Zuse Institute Berlin

  • White Papers // Nov 2009

    Exploiting Non-Dedicated Resources for Cloud Computing

    Popular web services and applications such as Google Apps, DropBox, and Go.Pc introduce a wasteful imbalance of processing resources. Each host operated by a provider serves hundreds to thousands of users, treating their PCs as thin clients. Tapping the processing, storage and networking capacities of these non-dedicated resources promises to...

    Provided By Zuse Institute Berlin

  • White Papers // Nov 2009

    Exploiting Non-Dedicated Resources for Cloud Computing

    Popular web services and applications such as Google Apps, DropBox, and Go.Pc introduce a wasteful imbalance of processing resources. Each host operated by a provider serves hundreds to thousands of users, treating their PCs as thin clients. Tapping the processing, storage and networking capacities of these non-dedicated resources promises to...

    Provided By Zuse Institute Berlin

  • White Papers // Aug 2011

    Flease - Lease Coordination Without a Lock Server

    Large-scale distributed systems often require scalable and fault-tolerant mechanisms to coordinate exclusive access to shared resources such as files, replicas or the primary role. The best known algorithms to implement distributed mutual exclusion with leases, such as Multipaxos, are complex, difficult to implement, and rely on stable storage to persist...

    Provided By Zuse Institute Berlin

  • White Papers // Oct 2010

    Loosely Time-Synchronized Snapshots in Object-Based File Systems

    A file system snapshot is a stable image of all files and directories in a well-defined state. Local file systems offer point-in-time consistency of snapshots, which guarantees that all files are frozen in a state in which they were at the same point in time. However, this cannot be achieved...

    Provided By Zuse Institute Berlin

  • White Papers // Feb 2010

    Fault-Tolerant and Decentralized Lease Coordination for Distributed Systems

    Applications which need exclusive access to a shared resource in distributed systems require a fault-tolerant and scalable mechanism to coordinate this exclusive access. Examples of such applications include distributed file systems and master/slave data replication. The authors present Flease, an algorithm for decentralized and fault-tolerant lease coordination in distributed systems....

    Provided By Zuse Institute Berlin

  • White Papers // Dec 2011

    Optimal Degree of Optical Circuit Switching in IP-Over-WDM Networks

    In this paper, the authors study the influence of technology, traffic properties and price trends on optimized design of a reference IP-over-WDM network with rich underlying fiber topology. In each network node, they investigate the optimal degree of traffic switching in an optical (lambda) domain versus an electrical (packet) domain,...

    Provided By Zuse Institute Berlin