Unity 2.0: Secure and Durable Personal Cloud Storage
Beom Heyn Kim, Wei Huang, Afshar Ganjali, David Lie

TL;DR
Unity 2.0 introduces a secure, consistent, and bandwidth-efficient personal cloud storage system that enhances security guarantees and supports multiple devices with minimal lease switching overhead.
Contribution
It presents Unity 2.0, a novel personal cloud storage system that ensures security, durability, and strong consistency while optimizing upload bandwidth for various workloads.
Findings
Unity consumes minimal upload bandwidth for compute-heavy workloads.
Unity's bandwidth usage for write-heavy workloads is comparable to NBD.
Read-heavy workloads with Unity use significantly less bandwidth, with room for further optimization.
Abstract
While personal cloud storage services such as Dropbox, OneDrive, Google Drive and iCloud have become very popular in recent years, these services offer few security guarantees to users. These cloud services are aimed at end users, whose applications often assume a local file system storage, and thus require strongly consistent data. In addition, users usually access these services using personal computers and portable devices such as phones and tablets, which are upload bandwidth constrained and in many cases battery powered. Unity is a system that provides confidentiality, integrity, durability and strong consistency while minimizing the upload bandwidth of its clients. We find that Unity consumes minimal upload bandwidth for compute-heavy workload compared to NFS and Dropbox, while uses similar amount of upload bandwidth for write-heavy workload relative to NBD. Although read-heavy…
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Taxonomy
TopicsAccess Control and Trust · Cloud Data Security Solutions · Mobile Agent-Based Network Management
