{"583572":{"#nid":"583572","#data":{"type":"event","title":"PhD Proposal by Jian Huang","body":[{"value":"\u003Cp\u003E\u003Cbr \/\u003E\r\nTitle: Towards Building Scalable, Reliable and Secure Flash-based Storage Systems\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJian Huang\u003Cbr \/\u003E\r\n\u003Ca href=\u0022http:\/\/www.cc.gatech.edu\/~jhuang95\/\u0022 target=\u0022_blank\u0022\u003Ehttp:\/\/www.cc.gatech.edu\/~jhuang95\/\u003C\/a\u003E\u003Cbr \/\u003E\r\nPh.D. student\u003Cbr \/\u003E\r\nSchool of Computer Science\u003Cbr \/\u003E\r\nCollege of Computing\u003Cbr \/\u003E\r\nGeorgia Institute of Technology\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cstrong\u003EDate:\u003C\/strong\u003E Monday, November 7th, 2016\u003Cbr \/\u003E\r\n\u003Cstrong\u003ETime:\u003C\/strong\u003E 11:30am - 1:30pm\u003Cbr \/\u003E\r\n\u003Cstrong\u003ELocation:\u003C\/strong\u003E KACB 2100\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCommittee:\u003Cbr \/\u003E\r\n-------------------------------------------------\u003Cbr \/\u003E\r\nDr. Moinuddin K. Qureshi (Advisor, School of Electrical and Computer Engineering, Georgia Tech)\u003Cbr \/\u003E\r\nDr. Umakishore Ramachandran (School of Computer Science, Georgia Tech)\u003Cbr \/\u003E\r\nDr. Taesoo Kim (School of Computer Science, Georgia Tech)\u003Cbr \/\u003E\r\nDr. Steven Swanson (Department of Computer Science and Engineering, University of California, San Diego)\u003Cbr \/\u003E\r\nDr. James Mickens (Department of Computer Science, Harvard University)\u003Cbr \/\u003E\r\nDr. Anirudh Badam (Systems Research Group, Microsoft Research, Redmond)\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAbstract:\u003C\/p\u003E\r\n\r\n\u003Cp\u003E--------------------------------------------------\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe longstanding goals of storage systems design have been to provide simple abstractions\u003Cbr \/\u003E\r\nfor high-level applications to efficiently access data while ensuring the data durability and\u003Cbr \/\u003E\r\nsecurity on physical device. The traditional storage system, which was designed for slow hard\u003Cbr \/\u003E\r\ndisk with block interface, does not fit for the recent hardware trends such as the faster flash\u003Cbr \/\u003E\r\nmemory with more flexible interfaces. The gap between the storage system software and\u003Cbr \/\u003E\r\nhardware device not only causes resource inefficiency and sub-optimal performance, but also\u003Cbr \/\u003E\r\nresult in uncertainty of data security and durability on storage.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTo bridge this gap, we rethink the system design with a holistic approach from system level to\u003Cbr \/\u003E\r\ndevice level for SSDs. First, we present FlashMap, a holistic SSD architecture that combines\u003Cbr \/\u003E\r\nmemory, storage and device-level indirections into a unified layer. By combining these layers,\u003Cbr \/\u003E\r\nFlashMap reduces critical-path latency for data access and improves DRAM caching efficiency\u003Cbr \/\u003E\r\nsignificantly for SSDs with large capacity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSecond, we propose FlashBlox, an SSD virtualization system that utilizes flash parallelism to\u003Cbr \/\u003E\r\nimprove performance isolation between virtual SSDs by assigning them on dedicated channels\u003Cbr \/\u003E\r\nand dies. It allows the wear of different channels and dies to diverge at fine time granularity in\u003Cbr \/\u003E\r\nfavor of isolation and adjusts that imbalance at a more coarse time granularities in a principled\u003Cbr \/\u003E\r\nmanner. FlashBlox reduces the tail latency of storage operations dramatically while achieving\u003Cbr \/\u003E\r\nuniform lifetime for SSDs.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThird, we present FlashGuard, a new SSD which has the capability of defending against\u003Cbr \/\u003E\r\nencryption ransomware by leveraging the intrinsic characteristics of SSDs. FlashGuard can\u003Cbr \/\u003E\r\nrestore user files encrypted by malware, while adding minimal overhead to normal storage\u003Cbr \/\u003E\r\noperations.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Towards Building Scalable, Reliable and Secure Flash-based Storage Systems"}],"uid":"27707","created_gmt":"2016-11-07 15:27:07","changed_gmt":"2016-11-07 15:27:07","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2016-11-07T11:30:00-05:00","event_time_end":"2016-11-07T13:30:00-05:00","event_time_end_last":"2016-11-07T13:30:00-05:00","gmt_time_start":"2016-11-07 16:30:00","gmt_time_end":"2016-11-07 18:30:00","gmt_time_end_last":"2016-11-07 18:30:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}