{"id":162275,"date":"2012-02-01T00:00:00","date_gmt":"2012-02-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/zzfs-a-hybrid-device-and-cloud-file-system-for-spontaneous-users\/"},"modified":"2018-10-16T20:14:55","modified_gmt":"2018-10-17T03:14:55","slug":"zzfs-a-hybrid-device-and-cloud-file-system-for-spontaneous-users","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/zzfs-a-hybrid-device-and-cloud-file-system-for-spontaneous-users\/","title":{"rendered":"ZZFS: A Hybrid Device and Cloud File System For Spontaneous Users"},"content":{"rendered":"<div class=\"asset-content\">\n<p>Good execution of data placement, caching and consistency policies across a user\u2019s personal devices has always been hard. Unpredictable networks, capricious user behavior with leaving devices on or off and non-uniform energy-saving policies constantly interfere with the good intentions of a storage system\u2019s policies. This paper\u2019s contribution is to better manage these inherent uncertainties. We do so primarily by building a low-power communication channel that is available even when a device is off. This channel is mainly made possible by a novel network interface card that is carefully placed under the control of storage system protocols. The design space can benefit existing placement policies (e.g., Cimbiosys [21], Perspective [23], Anzere [22]). It also allows for interesting new ones. We build a file system called ZZFS around a particular set of policies motivated by user studies. Its policies cater to users who interact with the file system in an ad hoc way \u2014 spontaneously and without pre-planning.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Good execution of data placement, caching and consistency policies across a user\u2019s personal devices has always been hard. Unpredictable networks, capricious user behavior with leaving devices on or off and non-uniform energy-saving policies constantly interfere with the good intentions of a storage system\u2019s policies. This paper\u2019s contribution is to better manage these inherent uncertainties. We [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13554,13547],"msr-publication-type":[193716],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-162275","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-human-computer-interaction","msr-research-area-systems-and-networking","msr-locale-en_us"],"msr_publishername":"USENIX","msr_edition":"Proceedings of the 10th Usenix Conference on File and Storage Technologies (FAST'12)","msr_affiliation":"","msr_published_date":"2012-02-01","msr_host":"","msr_duration":"","msr_version":"","msr_speaker":"","msr_other_contributors":"","msr_booktitle":"","msr_pages_string":"","msr_chapter":"","msr_isbn":"","msr_journal":"","msr_volume":"","msr_number":"","msr_editors":"","msr_series":"","msr_issue":"","msr_organization":"","msr_how_published":"","msr_notes":"","msr_highlight_text":"","msr_release_tracker_id":"","msr_original_fields_of_study":"","msr_download_urls":"","msr_external_url":"","msr_secondary_video_url":"","msr_longbiography":"","msr_microsoftintellectualproperty":1,"msr_main_download":"219526","msr_publicationurl":"","msr_doi":"","msr_publication_uploader":[{"type":"file","title":"ZZFSfinalpaper.pdf","viewUrl":"https:\/\/www.microsoft.com\/en-us\/research\/wp-content\/uploads\/2012\/02\/ZZFSfinalpaper.pdf","id":219526,"label_id":0}],"msr_related_uploader":"","msr_attachments":[{"id":219526,"url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-content\/uploads\/2012\/02\/ZZFSfinalpaper.pdf"}],"msr-author-ordering":[{"type":"text","value":"Michelle L. 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