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Goals of the case study

  • To specify information that needs to be exchanged between Warren and the client Data Center (DC), in order to decide whether fulfilling the requirements of DC is feasible by the current feature set of Warren.

  • To gather all necessary data, that takes into account a wide variety of technical possibilities that will satisfy the service model and commercial goals of the DC.

  • For Warren for the discovery of necessary required features for DC together with business value vs development effort estimates to provide maximum business value for the DC.

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Introduction

Necessary information from the Data Centre can be gathered with a set of simple, unambiguous questions that are divided into three subsets, based on the goal they are meant to achieve. Once answers to all subset questions are defined any ambiguity and misunderstanding over technical and determining factors will be cleared. The technical clarity achieved will be the fundamental premise to lay groundwork for a successful cooperation.  

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However, there is an exception to that hypothetical balance - the security domain. All SDN systems implement some (or more) security domains, whether it’s client level or system-wide. To configure 2 or more SDN systems to cooperate simultaneously on that domain, might be more time consuming than to configure the whole system to adopt a new one.

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Storage

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domain

Warrens storage domain consists of three options:

  • Distributed storage 

  • Shared storage 

  • Local storage

To determine the most desirable solution, the DC needs to consider several factors that are required to implement a particular storage type. Warren storage domain is based on distributed storage. In this chapter we explain why we have chosen it and how it compares to other popular solutions.

Storage holds the most valuable information - client application data, so the impact on the reliability and to Quality of Service is immense. In comparison network outage only affects the availability of data, whereas storage problems lead to permanent data loss.

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