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Displaying 1-13 out of 13 total
Secure Overlay Cloud Storage with Access Control and Assured Deletion
Found in: IEEE Transactions on Dependable and Secure Computing
By Yang Tang,Patrick P.C. Lee,John C.S. Lui,Radia Perlman
Issue Date:November 2012
pp. 903-916
We can now outsource data backups off-site to third-party cloud storage services so as to reduce data management costs. However, we must provide security guarantees for the outsourced data, which is now maintained by third parties. We design and implement ...
 
An Extensible Design of a Load-Aware Virtual Router Monitor in User Space
Found in: Parallel Processing Workshops, International Conference on
By Harry F.W. Choi,Patrick P.C. Lee
Issue Date:September 2011
pp. 361-370
Router virtualization enables multiple virtual routers to be hosted on a physical shared substrate, and hence facilitates network management and experimentation. One critical issue of router virtualization is resource allocation of virtual routers. We expl...
 
Secure Deduplication with Efficient and Reliable Convergent Key Management
Found in: IEEE Transactions on Parallel and Distributed Systems
By Jin Li,Xiaofeng Chen,Mingqiang Li,Jingwei Li,Patrick P.C. Lee,Wenjing Lou
Issue Date:June 2014
pp. 1615-1625
Data deduplication is a technique for eliminating duplicate copies of data, and has been widely used in cloud storage to reduce storage space and upload bandwidth. Promising as it is, an arising challenge is to perform secure deduplication in cloud storage...
 
Enabling Data Integrity Protection in Regenerating-Coding-Based Cloud Storage: Theory and Implementation
Found in: IEEE Transactions on Parallel and Distributed Systems
By Henry C.H. Chen,Patrick P.C. Lee
Issue Date:February 2014
pp. 407-416
To protect outsourced data in cloud storage against corruptions, adding fault tolerance to cloud storage, along with efficient data integrity checking and recovery procedures, becomes critical. Regenerating codes provide fault tolerance by striping data ac...
 
NCCloud: A Network-Coding-Based Storage System in a Cloud-of-Clouds
Found in: IEEE Transactions on Computers
By Henry C.H. Chen,Yuchong Hu,Patrick P.C. Lee,Yang Tang
Issue Date:January 2014
pp. 31-44
To provide fault tolerance for cloud storage, recent studies propose to stripe data across multiple cloud vendors. However, if a cloud suffers from a permanent failure and loses all its data, we need to repair the lost data with the help of the other survi...
 
Degraded-First Scheduling for MapReduce in Erasure-Coded Storage Clusters
Found in: 2014 44th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
By Runhui Li,Patrick P.C. Lee,Yuchong Hu
Issue Date:June 2014
pp. 419-430
We have witnessed an increasing adoption of erasure coding in modern clustered storage systems to reduce the storage overhead of traditional 3-way replication. However, it remains an open issue of how to customize the data analytics paradigm for erasure-co...
 
Stochastic Analysis on RAID Reliability for Solid-State Drives
Found in: 2013 IEEE 32nd International Symposium on Reliable Distributed Systems (SRDS)
By Yongkun Li,Patrick P.C. Lee,John C.S. Lui
Issue Date:September 2013
pp. 71-80
Solid-state drives (SSDs) have been widely deployed in desktops and data centers. However, SSDs suffer from bit errors, and the bit error rate is time dependent since it increases as an SSD wears down. Traditional storage systems mainly use parity-based RA...
 
A Secure Cloud Backup System with Assured Deletion and Version Control
Found in: Parallel Processing Workshops, International Conference on
By Arthur Rahumed,Henry C.H. Chen,Yang Tang,Patrick P.C. Lee,John C.S. Lui
Issue Date:September 2011
pp. 160-167
Cloud storage is an emerging service model that enables individuals and enterprises to outsource the storage of data backups to remote cloud providers at a low cost. However, cloud clients must enforce security guarantees of their outsourced data backups. ...
 
Toward Optimal Network Fault Correction in Externally Managed Overlay Networks
Found in: IEEE Transactions on Parallel and Distributed Systems
By Patrick P.C. Lee, Vishal Misra, Dan Rubenstein
Issue Date:March 2010
pp. 354-366
We consider an end-to-end approach of inferring probabilistic data forwarding failures in an externally managed overlay network, where overlay nodes are independently operated by various administrative domains. Our optimization goal is to minimize the expe...
 
Secure Deduplication with Efficient and Reliable Convergent Key Management
Found in: IEEE Transactions on Parallel and Distributed Systems
By Jin Li,Xiaofeng Chen,Mingqiang Li,Jingwei Li,Patrick P.C. Lee,Wenjing Lou
Issue Date:November 2013
pp. 1
Data deduplication is a technique for eliminating duplicate copies of data, and has been widely used in cloud storage to reduce storage space and upload bandwidth. Promising as it is, an arising challenge is to perform secure deduplication in cloud storage...
 
Enabling Data Integrity Protection in Regenerating-Coding-Based Cloud Storage
Found in: 2012 IEEE 31st International Symposium on Reliable Distributed Systems (SRDS)
By Henry C.H. Chen,Patrick P.C. Lee
Issue Date:October 2012
pp. 51-60
To protect outsourced data in cloud storage against corruptions, enabling integrity protection, fault tolerance, and efficient recovery for cloud storage becomes critical. Regenerating codes provide fault tolerance by striping data across multiple servers,...
   
Stochastic modeling of large-scale solid-state storage systems: analysis, design tradeoffs and optimization
Found in: Proceedings of the ACM SIGMETRICS/international conference on Measurement and modeling of computer systems (SIGMETRICS '13)
By John C.S. Lui, Patrick P.C. Lee, Yongkun Li
Issue Date:June 2013
pp. 179-190
Solid state drives (SSDs) have seen wide deployment in mobiles, desktops,and data centers due to their high I/O performance and low energy consumption. As SSDs write data out-of-place, garbage collection (GC) is required to erase and reclaim space with inv...
     
Characterization of 3G control-plane signaling overhead from a data-plane perspective
Found in: Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems (MSWiM '12)
By Cheng He, Edmond W.W. Chan, Li Qian, Patrick P.C. Lee
Issue Date:October 2012
pp. 325-332
In 3G networks, when user applications of mobile subscribers send or receive data-plane traffic, control-plane signaling messages will be triggered to initiate or release radio resources for the data transfer. Such signaling messages can increase the proce...
     
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