Nash Bargaining Solution (NBS) has been broadly suggested as an efficient solution for problem of fair allocation of multiple resources, namely bandwidth allocation in datacenters. In spite of being thoroughly studied, and provably strategyproof for most scenarios, NBS-based allocation methods lack research on strategic behavior of tenants in case of proportionality of resource demands, which i...

The most demanding tenants of shared clouds require complete isolation from their neighbors, in order to guarantee that their application performance is not affected by other tenants. Unfortunately, while shared clouds can offer an option whereby tenants obtain dedicated servers, they do not offer any network provisioning service, which would shield these tenants from network interference. In t...

Contrary to recent trends in database systems research focussing on scaling out workloads on a cluster of commodity computers, this presentation will break grounds for scale-up. We show that an elastic multi-tenancy solution can be achieved by combining a many-core server with a low footprint main memory database system. Total transactional throughput for TPC-C like order-entry transactions rea...

Cloud object stores are increasingly becoming the de facto storage choice for big data analytics platforms, mainly because they simplify the management of large blocks of data at scale. To ensure cost-effectiveness of the storage service, the object stores use hard disk drives (HDDs). However, the lower performance of HDDs affect tenants who have strict performance requirements for their big da...

Proofs of Retrievability (POR) are cryptographic proofs which provide assurance to a single tenant (who creates tags using his secret material) that his files can be retrieved in their entirety. However, POR schemes completely ignore storage-efficiency concepts, such as multi-tenancy and data deduplication, which are being widely utilized by existing cloud storage providers. Namely, in deduplic...

Most studies about business incubation describe an array of available services but often fail to present the tenants’ assessment quality. We set out to investigate if business incubators differ in terms of their value proposition. To do so, we identify three distinct generations of business incubators based on different dimensions included in their value proposition. We pose the question of whe...

Participating in demand response programs is a promising tool for reducing energy costs in data centers by modulating energy consumption. Towards this end, data centers can employ a rich set of resource management knobs, such as workload shifting and dynamic server provisioning. Nonetheless, these knobs may not be readily available in a cloud data center (CDC) that serves cloud tenants/users, b...

SaaS application is becoming more and more popular with the development of the cloud computing. In order to use the cloud service, the tenants should upload their data to the databases of cloud service provider, so how to protect the tenants’ privacy information from snooping or leaking by DBA while keeping a good application performance is a big challenge. Therefore, we address this challenge ...