Traffic measurement plays an important role in data centers. Many data center management tasks ranging from performance diagnosis, anomaly detection to traffic accounting and engineering all rely on accurate and on-time measurement of the traffic from different tenants and applications. For example, to perform traffic engineering, we need to correctly detect large flow aggregates and pick bette...

Cloud computing has attracted a great deal of attention in both academia and industry. We envision the provisioning of differentiated services as being one of the key components to the success of cloud computing. Unfortunately, this issue has not been fully addressed in the past. Realizing that different users might have different requirements regarding availability, reliability, durability, re...

Reducing data center power consumption is an important challenge with the increase in the demand for their services. We propose a Global Power Manger (GPM) for data centers. Global Power Manager migrates services around the data center with the goal of minimizing energy consumption in the data center. GPM has a holistic view of the data center and can considers any power-consuming element, such...

Power costs are very significant for data centers. To maximally utilize the provisioned power capacity, data centers often employ over-subscription, that is, the sum of peak consumptions of individual servers may be greater than the provisioned capacity. Power budgeting methods are employed to ensure that actual consumption never exceeds capacity. However, current power budgeting methods enforc...

How may we know that the ocean has or has not changed on the half-century time scale, if data points through time from in-situ measurements are not available because we, the observing scientists, did not and still often do not deposit our observations in data centers? Major efforts of the last two decades in retrieving earlier values and collecting recent measurements have greatly enlarged publ...

Cloud operators increasingly need more and more finegrained rules to better control individual network flows for various traffic management policies. In this paper, we explore automated rule management in the context of a system called vCRIB (a virtual Cloud Rule Information Base), which provides the abstraction of a centralized rule repository. The challenge in our approach is the design of al...

Data centers are a highly competitive environment that demands high performance and energy efficiency and, in many cases, low latency. Custom hardware can provide significant improvements over conventional microprocessors on those metrics. Microsoft has been investigating the use of reconfigurable logic, in the form of field programmable gate arrays, to accelerate its data centers. In this talk...

Data centers are becoming one of the major consumers of energy in modern economies accounting for a measurable fraction of the total energy consumption. Furthermore, the energy consumption of data centers has a high growth rate with the energy consumption doubling about every six years. With large data centers consuming several MW of power or even 10’s of MW energy efficiency and energy consump...

0 Abstract The increasing popularity of cloud storage services has led many companies to migrate their data into clouds for high availability whilst saving infrastructure constructions. Within the last few years, the architectures of most major cloud storage providers have evolved from single data center to multiple data centers, across different geo-locations. This architecture help improve th...

Humankind is not living sustainably, and action must be taken, and taken soon, to reverse this negative trend and reconcile human use of the planet’s resources with the ability of the Earth to supply them. A successful sustainability transition, moreover, will demand critical advances in basic knowledge, in humankind’s social and technological capacity to utilize it, and in the political will t...