Designing and Embedding Reliable Virtual Infrastructures

TL;DR

This paper proposes methods for designing and embedding reliable virtual infrastructures by pooling shared backup resources, ensuring resilience against physical server failures while optimizing resource utilization.

Contribution

It introduces a novel approach to embedding shared backup virtual resources across multiple infrastructures to improve reliability and resource efficiency.

Findings

Shared backup resource pooling reduces physical footprint.

Embedding strategies enhance virtual infrastructure resilience.

Resource sharing maintains reliability with lower utilization.

Abstract

In a virtualized infrastructure where physical resources are shared, a single physical server failure will terminate several virtual servers and crippling the virtual infrastructures which contained those virtual servers. In the worst case, more failures may cascade from overloading the remaining servers. To guarantee some level of reliability, each virtual infrastructure, at instantiation, should be augmented with backup virtual nodes and links that have sufficient capacities. This ensures that, when physical failures occur, sufficient computing resources are available and the virtual network topology is preserved. However, in doing so, the utilization of the physical infrastructure may be greatly reduced. This can be circumvented if backup resources are pooled and shared across multiple virtual infrastructures, and intelligently embedded in the physical infrastructure. These techniques can reduce the physical footprint of virtual backups while guaranteeing reliability.