{"id":"https://openalex.org/W2346524372","doi":"https://doi.org/10.1145/2822895","title":"H-Scale","display_name":"H-Scale","publication_year":2016,"publication_date":"2016-04-29","ids":{"openalex":"https://openalex.org/W2346524372","doi":"https://doi.org/10.1145/2822895","mag":"2346524372"},"language":"en","primary_location":{"id":"doi:10.1145/2822895","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2822895","pdf_url":null,"source":{"id":"https://openalex.org/S158124317","display_name":"ACM Transactions on Storage","issn_l":"1553-3077","issn":["1553-3077","1553-3093"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Storage","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5044866795","display_name":"Jiguang Wan","orcid":"https://orcid.org/0000-0003-3440-4460"},"institutions":[{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jiguang Wan","raw_affiliation_strings":["Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China"],"affiliations":[{"raw_affiliation_string":"Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101452057","display_name":"Peng Xu","orcid":"https://orcid.org/0000-0001-8547-5344"},"institutions":[{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Peng Xu","raw_affiliation_strings":["Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China"],"affiliations":[{"raw_affiliation_string":"Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087956045","display_name":"Xubin He","orcid":"https://orcid.org/0000-0002-5071-2861"},"institutions":[{"id":"https://openalex.org/I184840846","display_name":"Virginia Commonwealth University","ror":"https://ror.org/02nkdxk79","country_code":"US","type":"education","lineage":["https://openalex.org/I184840846"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xubin He","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Virginia Commonwealth University"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Virginia Commonwealth University","institution_ids":["https://openalex.org/I184840846"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5088330268","display_name":"Jibin Wang","orcid":"https://orcid.org/0000-0002-6549-9522"},"institutions":[{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jibin Wang","raw_affiliation_strings":["Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China"],"affiliations":[{"raw_affiliation_string":"Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101796222","display_name":"Junyao Li","orcid":"https://orcid.org/0000-0002-8437-1612"},"institutions":[{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junyao Li","raw_affiliation_strings":["Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China"],"affiliations":[{"raw_affiliation_string":"Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100329127","display_name":"Changsheng Xie","orcid":"https://orcid.org/0000-0003-1271-0571"},"institutions":[{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Changsheng Xie","raw_affiliation_strings":["Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China"],"affiliations":[{"raw_affiliation_string":"Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5044866795"],"corresponding_institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"],"apc_list":null,"apc_paid":null,"fwci":0.5791,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.70313362,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":96},"biblio":{"volume":"12","issue":"3","first_page":"1","last_page":"30"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9911999702453613,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9900000095367432,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/raid","display_name":"RAID","score":0.9564533233642578},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8497731685638428},{"id":"https://openalex.org/keywords/scaling","display_name":"Scaling","score":0.7994112968444824},{"id":"https://openalex.org/keywords/workload","display_name":"Workload","score":0.595510721206665},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5928804874420166},{"id":"https://openalex.org/keywords/data-migration","display_name":"Data migration","score":0.5760757923126221},{"id":"https://openalex.org/keywords/reliability","display_name":"Reliability (semiconductor)","score":0.5577728748321533},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.5529923439025879},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.46669676899909973},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.3673115074634552},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.2483493685722351},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.07060414552688599}],"concepts":[{"id":"https://openalex.org/C133320665","wikidata":"https://www.wikidata.org/wiki/Q179299","display_name":"RAID","level":2,"score":0.9564533233642578},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8497731685638428},{"id":"https://openalex.org/C99844830","wikidata":"https://www.wikidata.org/wiki/Q102441924","display_name":"Scaling","level":2,"score":0.7994112968444824},{"id":"https://openalex.org/C2778476105","wikidata":"https://www.wikidata.org/wiki/Q628539","display_name":"Workload","level":2,"score":0.595510721206665},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5928804874420166},{"id":"https://openalex.org/C146152329","wikidata":"https://www.wikidata.org/wiki/Q1932543","display_name":"Data migration","level":2,"score":0.5760757923126221},{"id":"https://openalex.org/C43214815","wikidata":"https://www.wikidata.org/wiki/Q7310987","display_name":"Reliability (semiconductor)","level":3,"score":0.5577728748321533},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.5529923439025879},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.46669676899909973},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.3673115074634552},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.2483493685722351},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.07060414552688599},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2822895","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2822895","pdf_url":null,"source":{"id":"https://openalex.org/S158124317","display_name":"ACM Transactions on Storage","issn_l":"1553-3077","issn":["1553-3077","1553-3093"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Storage","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","score":0.6499999761581421,"id":"https://metadata.un.org/sdg/10"}],"awards":[{"id":"https://openalex.org/G2697646235","display_name":null,"funder_award_id":"No. CNS-1320349 and No. CNS-1218960","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G3914924675","display_name":null,"funder_award_id":"61472152, No. 61432007, No. 61572209, and No. 61300047","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320309434","display_name":"University of Wisconsin-Madison","ror":"https://ror.org/01y2jtd41"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":45,"referenced_works":["https://openalex.org/W9592747","https://openalex.org/W1533295456","https://openalex.org/W1540555903","https://openalex.org/W1574672204","https://openalex.org/W1601821284","https://openalex.org/W1622719107","https://openalex.org/W1826815890","https://openalex.org/W1849397274","https://openalex.org/W1901314845","https://openalex.org/W1947924779","https://openalex.org/W1971950530","https://openalex.org/W1984381334","https://openalex.org/W1988722803","https://openalex.org/W1995039568","https://openalex.org/W1999984505","https://openalex.org/W2003824852","https://openalex.org/W2013168034","https://openalex.org/W2014405145","https://openalex.org/W2032062997","https://openalex.org/W2035308424","https://openalex.org/W2035606364","https://openalex.org/W2055835320","https://openalex.org/W2055869642","https://openalex.org/W2070892852","https://openalex.org/W2085463701","https://openalex.org/W2099023565","https://openalex.org/W2107502666","https://openalex.org/W2117975527","https://openalex.org/W2120329928","https://openalex.org/W2123438830","https://openalex.org/W2131894525","https://openalex.org/W2132748742","https://openalex.org/W2135102985","https://openalex.org/W2139164419","https://openalex.org/W2147504831","https://openalex.org/W2148132761","https://openalex.org/W2163440839","https://openalex.org/W2285144687","https://openalex.org/W2296226841","https://openalex.org/W2416934057","https://openalex.org/W4233609110","https://openalex.org/W4248578633","https://openalex.org/W4254234063","https://openalex.org/W4255946289","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2003824852","https://openalex.org/W2078933462","https://openalex.org/W3094485821","https://openalex.org/W2999725609","https://openalex.org/W2165180453","https://openalex.org/W2467739632","https://openalex.org/W2069171879","https://openalex.org/W2051673497","https://openalex.org/W2038468909","https://openalex.org/W3047895031"],"abstract_inverted_index":{"To":[0,55],"satisfy":[1],"the":[2,37,43,46,80,106,114,119,125,174],"explosive":[3],"growth":[4],"of":[5,14,45,52,79,83,99,154],"data":[6,9,38,89,107,155],"in":[7,152],"large-scale":[8],"centers,":[10],"where":[11],"redundant":[12],"arrays":[13],"independent":[15],"disks":[16,128],"(RAIDs),":[17],"especially":[18],"RAID-5,":[19],"are":[20,30,49,195],"widely":[21],"deployed,":[22],"effective":[23],"storage":[24,53],"scaling":[25,64,71,115,136,150,176,189],"and":[26,41,90,110,131,159,185,191],"disk":[27],"expansion":[28],"methods":[29],"desired.":[31],"However,":[32],"a":[33,61,134,166],"way":[34],"to":[35,67,86,91,180],"reduce":[36],"migration":[39,108],"overhead":[40,109],"maintain":[42],"reliability":[44],"original":[47,120],"RAID":[48,63,70,140],"major":[50],"concerns":[51],"scaling.":[54],"address":[56],"these":[57],"problems,":[58],"we":[59],"propose":[60],"new":[62],"scheme,":[65],"H-Scale,":[66],"achieve":[68],"fast":[69],"via":[72],"hybrid":[73,93],"stripe":[74,84,94],"layouts.":[75],"H-Scale":[76,147,171],"takes":[77],"advantage":[78],"loose":[81],"restriction":[82],"structures":[85],"choose":[87],"migrated":[88],"create":[92],"structures.":[95],"The":[96],"main":[97],"advantages":[98],"our":[100],"scheme":[101],"include:":[102],"(1)":[103],"dramatically":[104],"reducing":[105],"thus":[111],"speeding":[112],"up":[113,173,179],"process,":[116],"(2)":[117],"maintaining":[118],"RAID\u2019s":[121],"reliability,":[122],"(3)":[123],"balancing":[124],"workload":[126],"among":[127],"after":[129],"scaling,":[130],"(4)":[132],"providing":[133],"general":[135],"approach":[137],"for":[138],"different":[139],"levels.":[141],"Our":[142],"theoretical":[143],"analysis":[144],"show":[145],"that":[146,170],"outperforms":[148],"existing":[149],"solutions":[151],"terms":[153],"migration,":[156],"I/O":[157],"overheads,":[158],"parity":[160],"update":[161],"operations.":[162],"Evaluation":[163],"results":[164],"on":[165,188],"prototype":[167],"implementation":[168],"demonstrate":[169],"speeds":[172],"online":[175],"process":[177],"by":[178,198],"60%":[181],"under":[182],"SPC":[183],"traces,":[184],"similar":[186],"improvements":[187],"time":[190,194],"user":[192],"response":[193],"also":[196],"achieved":[197],"evaluations":[199],"using":[200],"standard":[201],"benchmarks.":[202]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2019,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2016-06-24T00:00:00"}