{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/77538"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/77538","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Network assisted file system consistency checking","abstract":"This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set.","abstract_html":"This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set.","abstract_has_math":false,"creators":["Zehender, Nicholas (Nicholas G.)"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.","school":null,"contributors":[],"advisors":["Farshid Eslami-Sarab and M. Frans Kaashock."],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011","date_published":"2011","updated_at":"2026-07-22T22:20:47Z","subjects":["Electrical Engineering and Computer Science."],"languages":["eng"],"rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1721.1/77538","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Farshid Eslami-Sarab and M. Frans Kaashock."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science."]},{"key":"dc:contributor.other","label":"Dc Contributor Other","values":["Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science."]},{"key":"dc:creator","label":"Author","values":["Zehender, Nicholas (Nicholas G.)"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2013-03-01T15:27:31Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2013-03-01T15:27:31Z"]},{"key":"dc:date.issued","label":"Date","values":["2011"]},{"key":"dc:publisher","label":"Institution","values":["Massachusetts Institute of Technology"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Electrical Engineering and Computer Science."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://dspace.mit.edu/handle/1721.1/7582"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1721.1/77538"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.","Cataloged from PDF version of thesis.","Includes bibliographical references (p. 63-64)."]},{"key":"dc:description.abstract","label":"Abstract","values":["This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["M.Eng."]},{"key":"dc:title","label":"Title","values":["Network assisted file system consistency checking"]}]}],"canonical_facts":{"dc:contributor.advisor":["Farshid Eslami-Sarab and M. Frans Kaashock."],"dc:contributor.department":["Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science."],"dc:contributor.other":["Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science."],"dc:creator":["Zehender, Nicholas (Nicholas G.)"],"dc:date.accessioned":["2013-03-01T15:27:31Z"],"dc:date.available":["2013-03-01T15:27:31Z"],"dc:date.issued":["2011"],"dc:description":["Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.","Cataloged from PDF version of thesis.","Includes bibliographical references (p. 63-64)."],"dc:description.abstract":["This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set."],"dc:description.degree":["M.Eng."],"dc:identifier.uri":["http://hdl.handle.net/1721.1/77538"],"dc:language.iso":["eng"],"dc:publisher":["Massachusetts Institute of Technology"],"dc:rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"dc:rights.uri":["http://dspace.mit.edu/handle/1721.1/7582"],"dc:subject":["Electrical Engineering and Computer Science."],"dc:title":["Network assisted file system consistency checking"],"dc:type":["Thesis"]},"updated_at":"2026-07-22T22:20:47Z"}