University of Cambridge > > Microsoft Research Cambridge, public talks > Towards Predictable Data Centers- Why Johnny can't use the cloud and what can we do about it?

Towards Predictable Data Centers- Why Johnny can't use the cloud and what can we do about it?

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The shared nature of the network in today‚Äôs multi-tenant data centers implies that network performance for tenants can vary significantly. This makes application performance and tenant costs unpredictable, both key concerns in data centers. Motivated by these factors, the Predictable Data Center project aims to address such performance unpredictability by extending the tenant-provider interface to explicitly account for the network. To this end, we provide tenants with a virtual network that guarantees their network bandwidth. This talk will provide a project overview with a focus on two key questions; what motivated our virtual network designs and how can they be enforced. We argue that our virtual networks ensure a good trade-off between tenant guarantees and tenant costs by guaranteeing their “aggregate” network bandwidth.

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