The Experts below are selected from a list of 33 Experts worldwide ranked by ideXlab platform

Bob Kearney - One of the best experts on this subject based on the ideXlab platform.

  • template based automated service provisioning supporting the agreement driven service life cycle
    International Conference on Service Oriented Computing, 2005
    Co-Authors: Heiko Ludwig, Henner Gimpel, Asit Dan, Bob Kearney
    Abstract:

    Service Level Agreements (SLAs) are a vital instrument in service-oriented architectures to reserve service capacity at a defined service quality level. Provisioning systems enable service managers to automatically configure resources such as servers, storage, and routers based on a Configuration Specification. Hence, agreement provisioning is a vital step in managing the life-cycle of agreement-driven services. Deriving detailed resource quantities from arbitrary SLA Specifications is a difficult task and requires detailed models of algorithmic behavior of service implementations and capacity of a – potentially heterogeneous – resource environment, which are typically not available today. However, if we look at, e.g., data centers today, system administrators often know the quality-of-service properties of known system Configurations and modifications thereof and can write the corresponding provisioning Specifications. This paper proposes an approach that leverages the knowledge of existing data center Configurations, defines templates of provisioning Specifications, and rules on how to fill these templates based on a SLA Specification. The approach is agnostic to the specific SLA language and provisioning Specification format used, if based on XML.

Heiko Ludwig - One of the best experts on this subject based on the ideXlab platform.

  • template based automated service provisioning supporting the agreement driven service life cycle
    International Conference on Service Oriented Computing, 2005
    Co-Authors: Heiko Ludwig, Henner Gimpel, Asit Dan, Bob Kearney
    Abstract:

    Service Level Agreements (SLAs) are a vital instrument in service-oriented architectures to reserve service capacity at a defined service quality level. Provisioning systems enable service managers to automatically configure resources such as servers, storage, and routers based on a Configuration Specification. Hence, agreement provisioning is a vital step in managing the life-cycle of agreement-driven services. Deriving detailed resource quantities from arbitrary SLA Specifications is a difficult task and requires detailed models of algorithmic behavior of service implementations and capacity of a – potentially heterogeneous – resource environment, which are typically not available today. However, if we look at, e.g., data centers today, system administrators often know the quality-of-service properties of known system Configurations and modifications thereof and can write the corresponding provisioning Specifications. This paper proposes an approach that leverages the knowledge of existing data center Configurations, defines templates of provisioning Specifications, and rules on how to fill these templates based on a SLA Specification. The approach is agnostic to the specific SLA language and provisioning Specification format used, if based on XML.

Asit Dan - One of the best experts on this subject based on the ideXlab platform.

  • template based automated service provisioning supporting the agreement driven service life cycle
    International Conference on Service Oriented Computing, 2005
    Co-Authors: Heiko Ludwig, Henner Gimpel, Asit Dan, Bob Kearney
    Abstract:

    Service Level Agreements (SLAs) are a vital instrument in service-oriented architectures to reserve service capacity at a defined service quality level. Provisioning systems enable service managers to automatically configure resources such as servers, storage, and routers based on a Configuration Specification. Hence, agreement provisioning is a vital step in managing the life-cycle of agreement-driven services. Deriving detailed resource quantities from arbitrary SLA Specifications is a difficult task and requires detailed models of algorithmic behavior of service implementations and capacity of a – potentially heterogeneous – resource environment, which are typically not available today. However, if we look at, e.g., data centers today, system administrators often know the quality-of-service properties of known system Configurations and modifications thereof and can write the corresponding provisioning Specifications. This paper proposes an approach that leverages the knowledge of existing data center Configurations, defines templates of provisioning Specifications, and rules on how to fill these templates based on a SLA Specification. The approach is agnostic to the specific SLA language and provisioning Specification format used, if based on XML.

Henner Gimpel - One of the best experts on this subject based on the ideXlab platform.

  • template based automated service provisioning supporting the agreement driven service life cycle
    International Conference on Service Oriented Computing, 2005
    Co-Authors: Heiko Ludwig, Henner Gimpel, Asit Dan, Bob Kearney
    Abstract:

    Service Level Agreements (SLAs) are a vital instrument in service-oriented architectures to reserve service capacity at a defined service quality level. Provisioning systems enable service managers to automatically configure resources such as servers, storage, and routers based on a Configuration Specification. Hence, agreement provisioning is a vital step in managing the life-cycle of agreement-driven services. Deriving detailed resource quantities from arbitrary SLA Specifications is a difficult task and requires detailed models of algorithmic behavior of service implementations and capacity of a – potentially heterogeneous – resource environment, which are typically not available today. However, if we look at, e.g., data centers today, system administrators often know the quality-of-service properties of known system Configurations and modifications thereof and can write the corresponding provisioning Specifications. This paper proposes an approach that leverages the knowledge of existing data center Configurations, defines templates of provisioning Specifications, and rules on how to fill these templates based on a SLA Specification. The approach is agnostic to the specific SLA language and provisioning Specification format used, if based on XML.

Ronnie Thomson - One of the best experts on this subject based on the ideXlab platform.

  • Configuration Specification using a system structure language
    Cooperative Distributed Systems, 1992
    Co-Authors: Ian Sommerville, Ronnie Thomson
    Abstract:

    A discussion is given on a system modelling language and supporting toolkit which was originally developed as part of the Eclipse software engineering environment. The authors address the modelling of large-scale systems made up of many different types of components. The language, called SySL (system structure language), enables system structure to be described at various levels of abstraction. A toolkit enables changes to the system descriptions to be made consistently, and automates the process of building an executable version of the described system. Using such a language and toolkit, a systems administrator can control the process of dynamically re-configuring a system in a much more effective way. SySL was developed in the first place to support the management of software Configurations. The authors have extended the system and are using it in a project investigating the general problems of distributed systems management (G. Dean et al., 1992). The language is also the basis for the Configuration language in a European collaborative project which is concerned with providing practical support for dynamic systems evolution. The authors describe some of the features of SySL and illustrate how the language can be used for system Configuration Specification using an example of a network of workstations. They then describe the toolkit which has been developed to support software Configuration management using SySL and initial work on the use of the language in conjunction with a dynamic Configuration manager.< >