\nProcesori Kunpeng p\u00ebrb\u00ebn nj\u00eb sistem n\u00eb nj\u00eb \u00e7ip (SoC), ku p\u00ebrve\u00e7 nj\u00ebsis\u00eb p\u00ebrpunuese, ka module hardueri q\u00eb p\u00ebrshpejtojn\u00eb procese t\u00eb ndryshme, si llogaritja e kontrolleve ose ekzekutimi i \"kodit t\u00eb fshirjes\" (erasure coding). N\u00eb t\u00eb \u00ebsht\u00eb implementuar mb\u00ebshtetje harduerike p\u00ebr SAS, Ethernet, DDR4 (nga gjasht\u00eb n\u00eb tet\u00eb kanale), etj. Kjo i lejon Huawei t\u00eb krijoj\u00eb kontrollues t\u00eb AXH, t\u00eb cil\u00ebt nuk i japin pas Intel-it n\u00eb performanc\u00eb. <\/p>\n
P\u00ebr m\u00eb tep\u00ebr, zgjidhjet e saj t\u00eb bazuara n\u00eb arkitektur\u00ebn ARM i japin Huawei mund\u00ebsin\u00eb t\u00eb krijoj\u00eb zgjidhje t\u00eb plota server\u00ebsh dhe t'i ofroj\u00eb ato klient\u00ebve t\u00eb saj si nj\u00eb alternativ\u00eb ndaj x86.<\/p>\n
\nArkitektura e brendshme e AXH Dorado V6 t\u00eb seris\u00eb s\u00eb lart\u00eb \u00ebsht\u00eb e paraqitur nga kat\u00ebr sub-domen\u00eb kryesore (fabrika). <\/p>\n
Fabrika e par\u00eb \u00ebsht\u00eb frontend i p\u00ebrgjithsh\u00ebm (interfacet e rrjetit q\u00eb jan\u00eb p\u00ebrgjegj\u00ebs p\u00ebr lidhjen me fabrik\u00ebn SAN ose hostet). <\/p>\n
Fabrika e dyt\u00eb \u2014 nj\u00eb grup kontrolluesish, secili prej t\u00eb cil\u00ebve mund t\u00eb arrij\u00eb p\u00ebrmes protokollit RDMA si n\u00eb \u00e7do kart\u00eb rrjeti t\u00eb frontendit, ashtu edhe tek \"motor\u00ebt\" (engine), q\u00eb p\u00ebrb\u00ebn nj\u00eb kuti me kat\u00ebr kontrollues, si dhe blloqet e p\u00ebrbashk\u00ebta t\u00eb furnizimit me energji dhe ftohjes. Tani modelet Dorado V6 t\u00eb klas\u00ebs hi-end mund t\u00eb pajisen me dy \"motor\u00eb\" t\u00eb till\u00eb (p\u00ebrkat\u00ebsisht tet\u00eb kontrollues).<\/p>\n
Fabrika e tret\u00eb \u00ebsht\u00eb p\u00ebrgjegj\u00ebse p\u00ebr backend dhe p\u00ebrb\u00ebhet nga kartat rrjet\u00ebse RDMA 100G.<\/p>\n
M\u00eb n\u00eb fund, fabrika e kat\u00ebrt \"n\u00eb hardware\" paraqitet me rafte inteligjente t\u00eb nd\u00ebrlidhura me disqe.<\/p>\n
P\u00ebr struktura simetrike t\u00eb till\u00eb zbulon t\u00eb gjith\u00eb potencialin e teknologjis\u00eb NVMe dhe garanton performanc\u00eb t\u00eb lart\u00eb dhe besueshm\u00ebri. Procesi i hyrjes dhe daljes maksimalisht ndahen n\u00ebp\u00ebr procesor\u00eb dhe b\u00ebrtham\u00eb, duke siguruar lexime dhe shkruajta t\u00eb nj\u00ebkohshme n\u00eb shum\u00eb rrjedha.<\/p>\n
\nPerformanca maksimale e zgjidhjeve Dorado V6 \u00ebsht\u00eb rreth tri her\u00eb m\u00eb e lart\u00eb se treguesit e sistemeve t\u00eb brezit t\u00eb kaluar (t\u00eb nj\u00ebjt\u00ebs kategori) dhe mund t\u00eb arrij\u00eb deri n\u00eb 20 milion IOPS. <\/p>\n
Kjo \u00ebsht\u00eb p\u00ebr shkak se n\u00eb brezin e kaluar t\u00eb pajisjeve, mb\u00ebshtetje p\u00ebr NVMe ishte e pranishme vet\u00ebm n\u00eb rafte t\u00eb nd\u00ebrlidhura me disqe. Tani, ajo \u00ebsht\u00eb e pranishme n\u00eb t\u00eb gjitha fazat, nga hosti deri te SSD. Rrjeti i backend-it gjithashtu ka p\u00ebsuar ndryshime: SAS\/PCIe jan\u00eb z\u00ebvend\u00ebsuar nga RoCEv2 me kapacitet prej 100 Gbit\/s. <\/p>\n
Ka ndryshuar edhe vet\u00eb formati i SSD. N\u00ebse m\u00eb par\u00eb nj\u00eb rafte 2U kishte 25 disqe, tani ajo \u00ebsht\u00eb rritur n\u00eb 36 disqe me format fizik n\u00eb p\u00ebrmas\u00ebn palm-sized. P\u00ebr m\u00eb tep\u00ebr, rafte jan\u00eb \"inteligjentuar\". Tani n\u00eb \u00e7do rafte ka nj\u00eb sistem t\u00eb q\u00ebndruesh\u00ebm me dy kontroler\u00eb t\u00eb bazuar n\u00eb \u00e7ipet ARM, t\u00eb ngjashme me ato q\u00eb jan\u00eb instaluar n\u00eb kontroler\u00ebt qendror\u00eb. <\/p>\n
Kompresimi dhe deduplichimi n\u00eb SAN-in e brezit t\u00eb kaluar jan\u00eb kryer me blloqe me gjat\u00ebsi fikse. Tani \u00ebsht\u00eb shtuar nj\u00eb mod p\u00ebr t\u00eb punuar me blloqe me gjat\u00ebsi t\u00eb ndryshueshme, i cili p\u00ebr momentin duhet t\u00eb aktivizohet manualisht. Versionet e m\u00ebpasshme t\u00eb programimit ndoshta do t\u00eb ndryshojn\u00eb k\u00ebt\u00eb situat\u00eb.<\/p>\n
Po ashtu, shkurtimisht mbi toleranc\u00ebn ndaj d\u00ebshtimeve. Dorado V3 mbajti funksionalitetin n\u00ebse nj\u00eb kontroler nga dy e d\u00ebshton. Dorado V6 do t\u00eb siguroj\u00eb disponueshm\u00ebrin\u00eb e t\u00eb dh\u00ebnave edhe n\u00ebse d\u00ebshtojn\u00eb nj\u00ebra pas tjetr\u00ebs shtat\u00eb kontroler\u00eb nga tet\u00eb ose p\u00ebr nj\u00ebkoh\u00ebsisht kat\u00ebr nga nj\u00eb \"motor\".<\/p>\n
\nS\u00eb fundmi, nd\u00ebr klient\u00ebt e Huawei u krye nj\u00eb anket\u00eb n\u00eb lidhje me at\u00eb se cilat elemente t\u00eb ve\u00e7anta t\u00eb infrastruktur\u00ebs IT kompania i konsideron t\u00eb pranueshme. N\u00eb mas\u00eb t\u00eb madhe, respondent\u00ebt e pranuan me tolerance nj\u00eb situat\u00eb hipotetike ku nj\u00eb aplikacion nuk p\u00ebrgjigjet p\u00ebr disa qindra sekonda. P\u00ebr sistemin operativ ose adaptoin e hostit, koha kritike e ndaljes rezultoi t\u00eb ishte disa dhjet\u00ebra sekonda (thell\u00ebsisht, koha e rinisjes). Dikush tregoi k\u00ebrkesa edhe m\u00eb t\u00eb larta p\u00ebr rrjetin: kapaciteti i tij i kalimit nuk duhet t\u00eb bie m\u00eb shum\u00eb se 10\u201320 sekonda. Si\u00e7 mund t\u00eb merret me mend, pjes\u00ebmarr\u00ebsit e anket\u00ebs e konsideruan si m\u00eb kritik d\u00ebshtimin e sistemeve t\u00eb ruajtjes. Nga k\u00ebndv\u00ebshtrimi i p\u00ebrfaq\u00ebsuesve t\u00eb biznesit, ndalimi i nj\u00eb sistemi ruajtjeje nuk duhet t\u00eb tejkaloj\u00eb\u2026 disa sekonda n\u00eb vit!<\/p>\n
Me fjal\u00eb t\u00eb tjera, n\u00ebse aplikacioni klient i bank\u00ebs nuk p\u00ebrgjigjet p\u00ebr 100 sekonda, kjo ndoshta nuk do t\u00eb sjell\u00eb pasojat katastrofike. Por, n\u00ebse po aq koh\u00eb nuk punon sistemi i ruajtjes, ndalimi i biznesit dhe humbjet financiare jan\u00eb t\u00eb mundshme.<\/p>\n
N\u00eb diagramin e sip\u00ebrm jan\u00eb paraqitur shkall\u00ebt e kostos p\u00ebr or\u00ebn e pun\u00ebs p\u00ebr dhjet\u00eb bankat m\u00eb t\u00eb m\u00ebdha (t\u00eb dh\u00ebnat Forbes 2017). Pranojeni, n\u00ebse kompania juaj i afrohet p\u00ebrmasave t\u00eb bankave kineze, do t\u00eb jet\u00eb e leht\u00eb t\u00eb arsyetoni nevoj\u00ebn p\u00ebr t\u00eb bler\u00eb nj\u00eb sistem ruajtjeje p\u00ebr disa milion dollar\u00eb. E nj\u00ebjta gj\u00eb \u00ebsht\u00eb e v\u00ebrtet\u00eb e kund\u00ebrta: n\u00ebse biznesi nuk p\u00ebson humbje t\u00eb konsiderueshme gjat\u00eb ndalimit, at\u00ebher\u00eb sigurisht nuk do t\u00eb blej\u00eb nj\u00eb sistem ruajtjeje t\u00eb klas\u00ebs hi-end. N\u00eb \u00e7do rast, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb keni nj\u00eb ide se sa do t\u00eb jet\u00eb vrima q\u00eb mund t\u00eb formohet n\u00eb portofolin tuaj, nd\u00ebrsa administratori i sistemit merret me nj\u00eb sistem ruajtjeje t\u00eb d\u00ebshtuar.<\/p><\/blockquote>\n
Sekonda p\u00ebr kalimin emergjent<\/h2>\n \nN\u00eb Zgjidhjen A q\u00eb ilustrohet m\u00eb lart, mund t\u00eb njihni sistemin ton\u00eb t\u00eb brezit t\u00eb kaluar Dorado V3. Kat\u00ebr kontrolluesit e saj punojn\u00eb t\u00eb \u00e7iftuar, dhe kopjet e caches ruhen vet\u00ebm n\u00eb dy kontrollues. Kontrolluesit brenda \u00e7iftit mund t\u00eb riparatojn\u00eb ngarkes\u00ebn. N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, si\u00e7 shihni, k\u00ebtu nuk ka \"fabrika\" p\u00ebr frontin dhe prapavij\u00ebn, k\u00ebshtu q\u00eb \u00e7do raft me memorie lidhet me nj\u00eb \u00e7ift t\u00eb caktuar kontrolluesish.<\/p>\n
N\u00eb diagramin e Zgjidhjes B \u00ebsht\u00eb paraqitur nj\u00eb zgjidhje aktuale n\u00eb treg nga nj\u00eb furnizues tjet\u00ebr (e kuptuat?). K\u00ebtu tashm\u00eb ka fabrika frontend dhe backend, nd\u00ebrsa ruajt\u00ebsit lidhen direkt me kat\u00ebr kontrollor\u00eb. Megjithat\u00eb, n\u00eb pun\u00ebn e algoritmeve t\u00eb brendshme t\u00eb sistemit ka nuanca q\u00eb nuk jan\u00eb t\u00eb dukshme n\u00eb shikim t\u00eb par\u00eb.<\/p>\n
N\u00eb t\u00eb djatht\u00eb \u00ebsht\u00eb paraqitur arkitektura jon\u00eb aktuale e SCSI Dorado V6 me t\u00eb gjitha element\u00ebt e saj t\u00eb brendsh\u00ebm. Le t\u00eb shqyrtojm\u00eb se si k\u00ebto sisteme e p\u00ebrballojn\u00eb nj\u00eb situat\u00eb tipike - d\u00ebshtimin e nj\u00eb kontrollori.<\/p>\n
N\u00eb sistemet klasike, t\u00eb cilat p\u00ebrfshijn\u00eb edhe Dorado V3, periudha q\u00eb k\u00ebrkohet p\u00ebr t\u00eb shp\u00ebrndar\u00eb ngarkes\u00ebn pas nj\u00eb d\u00ebshtimi arrin deri n\u00eb kat\u00ebr sekonda. Gjat\u00eb k\u00ebsaj kohe, hyrja-dalja ndalet plot\u00ebsisht. N\u00eb zgjidhjen Zgjidhja B nga koleg\u00ebt tan\u00eb, pavar\u00ebsisht nga arkitektura m\u00eb moderne, koha e q\u00ebndrimit pas nj\u00eb d\u00ebshtimi \u00ebsht\u00eb madje m\u00eb e gjat\u00eb - gjasht\u00eb sekonda.<\/p>\n
SCSI Dorado V6 e rikthen funksionimin e saj pas vet\u00ebm nj\u00eb sekonde pas d\u00ebshtimit. Ky rezultat arrihet fal\u00eb nj\u00eb ambienti t\u00eb brendsh\u00ebm homogjen RDMA, q\u00eb i lejon kontrollorit t\u00eb qaset n\u00eb memorien 'e huaj'. Nj\u00eb rrethan\u00eb tjet\u00ebr e r\u00ebnd\u00ebsishme \u00ebsht\u00eb pranija e fabrik\u00ebs frontend, q\u00eb b\u00ebn q\u00eb rruga p\u00ebr hostin t\u00eb mos ndryshoj\u00eb. Porta q\u00ebndron e nj\u00ebjt\u00eb, dhe ngarkesa thjesht d\u00ebrgohet n\u00eb kontrollor\u00ebt e sh\u00ebndetsh\u00ebm nga drejtuesit e multi-passt.<\/p>\n
D\u00ebshtimi i kontrollorit t\u00eb dyt\u00eb n\u00eb Dorado V6 menaxhohet p\u00ebr nj\u00eb sekond\u00eb sipas s\u00eb nj\u00ebjt\u00ebs skem\u00eb. P\u00ebr Dorado V3, kjo zgjat rreth gjasht\u00eb sekonda, nd\u00ebrsa p\u00ebr zgjidhjen e nj\u00eb furnizuesi tjet\u00ebr - n\u00ebnt\u00eb. P\u00ebr shum\u00eb DBMS, k\u00ebto intervale nuk mund t\u00eb konsiderohen t\u00eb pranueshme, pasi gjat\u00eb k\u00ebsaj kohe sistemi kalon n\u00eb modin standby dhe ndalon s\u00eb funksionuari. Kjo iu referohet s\u00eb pari DBMS-ve, q\u00eb p\u00ebrb\u00ebhen nga shum\u00eb pjes\u00eb.<\/p>\n
D\u00ebshtimi i kontrollorit t\u00eb tret\u00eb Solution A nuk mund t\u00eb p\u00ebrballohet. Thjesht p\u00ebr shkak se humbet aksesin n\u00eb nj\u00eb pjes\u00eb t\u00eb disk\u00ebve me t\u00eb dh\u00ebna. Nga ana tjet\u00ebr, Solution B n\u00eb nj\u00eb situat\u00eb t\u00eb till\u00eb rikthen funksionalitetin, p\u00ebr t\u00eb cilin nevojitet, si n\u00eb rastin e m\u00ebparsh\u00ebm, n\u00ebnt\u00eb sekonda.<\/p>\n
\u00c7far\u00eb ndodh me Dorado V6? Nj\u00eb sekond\u00eb.<\/p>\n
\u00c7far\u00eb mund t\u00eb b\u00ebhet brenda nj\u00eb sekonde?<\/h2>\n \nGj\u00ebja kryesore \u00ebsht\u00eb q\u00eb nuk na nevojitet shum\u00eb. \u00cbsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb theksojm\u00eb se n\u00eb Dorado V6 klasa hi-end fabrika e front-end-it \u00ebsht\u00eb e ndar\u00eb nga fabrika e kontroler\u00ebve. K\u00ebshtu, nuk ka porte t\u00eb ngurta q\u00eb i p\u00ebrkasin nj\u00eb kontrolluesi t\u00eb caktuar. Ri-strukturimi n\u00eb rast t\u00eb nj\u00eb d\u00ebshtimi nuk k\u00ebrkon k\u00ebrkimin e marr\u00ebveshjeve alternative ose ri-ini\u00e7ializimin e multi-passing. Sistemi vazhdon t\u00eb punoj\u00eb si\u00e7 ka punuar.<\/p>\n
Resistenca ndaj shum\u00eb d\u00ebshtimeve<\/h2>\n \nModelet m\u00eb t\u00eb avancuara t\u00eb Dorado V6, pa asnj\u00eb problem, p\u00ebrballojn\u00eb d\u00ebshtimin e p\u00ebrbashk\u00ebt t\u00eb dy kontroler\u00ebve t\u00eb \u00e7do lloji (!) nga \u00e7do \"motor\". Kjo ishte e mundur fal\u00eb faktit se tani zgjidhja ruan tri kopje t\u00eb caches. Prandaj, madje edhe n\u00eb rastin e nj\u00eb d\u00ebshtimi t\u00eb dyfisht\u00eb, gjithmon\u00eb do t\u00eb ket\u00eb nj\u00eb kopje t\u00eb pand\u00ebrprer\u00eb.<\/p>\n
D\u00ebshtimi sinkron i t\u00eb kat\u00ebr kontroler\u00ebve n\u00eb nj\u00eb nga \"motor\u00ebt\" gjithashtu nuk do t\u00eb shkaktoj\u00eb pasoja fatale, pasi t\u00eb tre kopjet e caches n\u00eb \u00e7do moment jan\u00eb t\u00eb shp\u00ebrndara midis \"motor\u00ebve\". Sistemi vet\u00eb monitoron p\u00ebrputhshm\u00ebrin\u00eb e k\u00ebsaj logjike pune.<\/p>\n
N\u00eb fund, nj\u00eb skenar krejt i papritur \u00ebsht\u00eb d\u00ebshtimi radhazi i shtat\u00eb kontroler\u00ebve nga tet\u00eb. Megjithat\u00eb, intervali minimal i lejuar p\u00ebr t\u00eb ruajtur funksionalitetin midis d\u00ebshtimeve t\u00eb ve\u00e7anta \u00ebsht\u00eb 15 minuta. Gjat\u00eb k\u00ebsaj kohe, sistemi ruajt\u00ebs do t\u00eb arrij\u00eb t\u00eb kryej\u00eb operacionet e nevojshme p\u00ebr migrimin e caches.<\/p>\n
Kontrolleri i mbetur do t\u00eb siguroj\u00eb operimin e ruajtjes s\u00eb t\u00eb dh\u00ebnave dhe do t\u00eb mbaj\u00eb caches p\u00ebr pes\u00eb dit\u00eb (vlera e paracaktuar, q\u00eb mund t\u00eb ndryshohet leht\u00ebsisht n\u00eb cil\u00ebsime). Pas k\u00ebsaj, caches do t\u00eb \u00e7aktivizohet, por funksionimi i sistemit do t\u00eb vazhdoj\u00eb.<\/p>\n
P\u00ebrdit\u00ebsime q\u00eb nuk shqet\u00ebsojn\u00eb<\/h2>\n \nSistemi i ri operativ Dorado V6 lejon p\u00ebrdit\u00ebsimin e firmware t\u00eb sistemit ruajt\u00ebs pa rinisur kontroller\u00ebt.<\/p>\n
Sistemi operativ, ashtu si n\u00eb rastin e zgjidhjeve t\u00eb m\u00ebparshme, \u00ebsht\u00eb nd\u00ebrtuar n\u00eb baz\u00eb t\u00eb Linux, megjithat\u00eb shum\u00eb procese operacionale jan\u00eb transferuar nga b\u00ebrthama n\u00eb modin e p\u00ebrdoruesit. Shumica e funksioneve, p\u00ebr shembull ato q\u00eb lidhen me deduplication dhe kompresimin, tani jan\u00eb procese t\u00eb zakonshme q\u00eb funksionojn\u00eb si demon\u00eb n\u00eb sfond. Fal\u00eb k\u00ebsaj, p\u00ebr t\u00eb p\u00ebrdit\u00ebsuar modulet e ve\u00e7anta nuk \u00ebsht\u00eb e nevojshme t\u00eb nd\u00ebrroni t\u00eb gjith\u00eb sistemin operativ. P\u00ebr shembull, p\u00ebr t\u00eb shtuar mb\u00ebshtetje p\u00ebr nj\u00eb protokoll t\u00eb ri, do t\u00eb mjaftonte t\u00eb \u00e7aktivizohej moduli p\u00ebrkat\u00ebs dhe t\u00eb aktivizohej ai i ri.<\/p>\n
\u00cbsht\u00eb e qart\u00eb se \u00e7\u00ebshtjet e p\u00ebrdit\u00ebsimit t\u00eb sistemit vazhdojn\u00eb t\u00eb mbeten, sepse edhe n\u00eb b\u00ebrtham\u00eb mund t\u00eb ket\u00eb element\u00eb q\u00eb k\u00ebrkojn\u00eb p\u00ebrdit\u00ebsim. Por, sipas v\u00ebzhgimeve tona, ato p\u00ebrb\u00ebjn\u00eb m\u00eb pak se 6% t\u00eb numrit total. Kjo lejon t\u00eb rivendosen kontrollor\u00ebt dhjet\u00ebra her\u00eb m\u00eb rrall\u00eb se m\u00eb par\u00eb.<\/p>\n
Zgjidhjet e q\u00ebndrueshm\u00ebris\u00eb ndaj katastrofave dhe zgjidhjet me disponueshm\u00ebri t\u00eb lart\u00eb (HA\/DR)<\/h2>\n \nDorado V6 \"nga kutia\" \u00ebsht\u00eb e gatshme p\u00ebr integrim n\u00eb zgjidhjet e shp\u00ebrndara gjeografikisht, klasteret e nivelit t\u00eb qytetit (metro) dhe qendrat e t\u00eb dh\u00ebnave \"tre her\u00eb\".<\/p>\n
Majtas n\u00eb ilustrimin m\u00eb sip\u00ebr \u2014 nj\u00eb metro-klaster q\u00eb \u00ebsht\u00eb i njohur p\u00ebr shumic\u00ebn. Dy SHD funksionojn\u00eb n\u00eb m\u00ebnyr\u00ebn aktive \/ aktive n\u00eb nj\u00eb distanc\u00eb deri n\u00eb 100 km nga nj\u00ebri-tjetri. Nj\u00eb infrastruktur\u00eb e till\u00eb me pranin\u00eb e nj\u00eb ose m\u00eb shum\u00eb server\u00ebve t\u00eb kuorumit mund t\u00eb mb\u00ebshtetet nga zgjidhje t\u00eb kompanive t\u00eb ndryshme, duke p\u00ebrfshir\u00eb sistemin ton\u00eb operativ n\u00eb re FusionSphere. Karakteristikat e kanalit midis sit\u00ebve b\u00ebhen t\u00eb r\u00ebnd\u00ebsishme n\u00eb k\u00ebto projekte, nd\u00ebrsa t\u00eb gjitha detyrat e tjera n\u00eb k\u00ebt\u00eb rast i merr mbi vete funksioni HyperMetro, i disponuesh\u00ebm, p\u00ebrs\u00ebri, \"nga kutia\". Mund t\u00eb b\u00ebhet integrim p\u00ebrmes Fibre Channel, si dhe p\u00ebrmes iSCSI n\u00eb rrjetet IP, n\u00ebse ka nevoj\u00eb t\u00eb till\u00eb. Nuk ka m\u00eb nevoj\u00eb p\u00ebr optik\u00eb \"t\u00eb err\u00ebt\" t\u00eb dedikuar, sepse sistemi \u00ebsht\u00eb n\u00eb gjendje t\u00eb lidhet p\u00ebrmes kanaleve ekzistuese.<\/p>\n
Kur nd\u00ebrtohen k\u00ebto sisteme, k\u00ebrkesa e vetme harduerike p\u00ebr SHD \u00ebsht\u00eb rezervimi i porteve p\u00ebr replikim. Mjafton t\u00eb blini nj\u00eb licenc\u00eb, t\u00eb nisni server\u00ebt e kuorumit \u2014 fizik ose virtual \u2014 dhe t\u00eb siguroheni p\u00ebr lidhje IP me kontrollor\u00ebt (10 Mbit\/s, 50 ms).<\/p>\n
Kjo arkitektur\u00eb leht\u00eb transferohet n\u00eb nj\u00eb sistem me tre QENDRA t\u00eb T\u00cb DHENAVE (shih pjes\u00ebn e djatht\u00eb t\u00eb ilustrimit). P\u00ebr shembull, kur dy QENDRA t\u00eb T\u00cb DHENAVE punojn\u00eb n\u00eb m\u00ebnyr\u00ebn e metro-klasterit, dhe nj\u00eb vendndodhje e tret\u00eb, e vendosur n\u00eb nj\u00eb distanc\u00eb m\u00eb t\u00eb madhe se 100 km, p\u00ebrdor replikimin asinkron.<\/p>\n
Sistemi teknologjikisht mb\u00ebshtet skenar\u00eb t\u00eb ndrysh\u00ebm biznesi, t\u00eb cilat do t\u00eb realizohen n\u00eb rast t\u00eb nj\u00eb eksesi masiv.<\/p>\n
Mund\u00ebsia e mbijetes\u00ebs s\u00eb metro-klasterit n\u00eb rast t\u00eb disa d\u00ebshtimeve<\/h2>\n \nN\u00eb ilustrimin m\u00eb sip\u00ebr dhe m\u00eb posht\u00eb gjithashtu shihet nj\u00eb metro-klaster klasik, q\u00eb p\u00ebrb\u00ebhet nga dy SHD dhe nj\u00eb server kuorum. Si\u00e7 e shihni, n\u00eb gjasht\u00eb nga n\u00ebnt\u00eb skenar\u00ebt e mundsh\u00ebm t\u00eb d\u00ebshtimeve t\u00eb shumta, infrastruktura jon\u00eb do t\u00eb ruaj\u00eb funksionalitetin.<\/p>\n
P\u00ebr shembull, n\u00eb skenarin e dyt\u00eb, n\u00eb rastin e d\u00ebshtimit t\u00eb serverit t\u00eb kuorumit dhe sinkronizimit midis platformave, sistemi mbetet funksional, pasi platforma e dyt\u00eb ndalon pun\u00ebn. Nj\u00eb sjellje e till\u00eb \u00ebsht\u00eb e inkorporuar n\u00eb algoritmet e nd\u00ebrtuara.<\/p>\n
Edhe pas tre d\u00ebshtimeve, qasja n\u00eb informacion mund t\u00eb ruhet, n\u00ebse intervali midis tyre \u00ebsht\u00eb t\u00eb pakt\u00ebn 15 sekonda.<\/p>\n
Asesi zakonsh\u00ebm i n\u00ebntok\u00ebs<\/h2>\n \nKujtojm\u00eb se Huawei prodhon jo vet\u00ebm SXD, por edhe nj\u00eb gam\u00eb t\u00eb plot\u00eb t\u00eb pajisjeve rrjet. \u00c7far\u00ebdo q\u00eb t\u00eb jet\u00eb ofruesi i SXD-s\u00eb q\u00eb zgjidhni, n\u00ebse midis platformave p\u00ebrdoret nj\u00eb rrjet WDM, n\u00eb 90% t\u00eb rasteve ai do t\u00eb nd\u00ebrtohet mbi zgjidhjet e kompanis\u00eb son\u00eb. Shpesh lind pyetja logjike: pse t\u00eb grumbullojm\u00eb nj\u00eb zvarrit\u00ebs sistemi, kur t\u00eb gjith\u00eb \u2018harduerin\u2019 q\u00eb \u00ebsht\u00eb plot\u00ebsisht i kompatibil \u00ebsht\u00eb n\u00eb dispozicion nga nj\u00eb ofrues?<\/p>\n
P\u00ebrsa i p\u00ebrket performanc\u00ebs<\/h2>\n \nNdoshta nuk ka nevoj\u00eb t\u00eb bindim ask\u00ebnd m\u00eb se kalimi n\u00eb SXD All-Flash lejon t\u00eb reduktohen ndjesh\u00ebm shpenzimet p\u00ebr mir\u00ebmbajtjen e infrastruktur\u00ebs, pasi t\u00eb gjitha operacionet rutin\u00eb kryhen shum\u00eb m\u00eb shpejt. T\u00eb gjith\u00eb ofruesit e pajisjeve t\u00eb k\u00ebtij lloji e d\u00ebshmojn\u00eb k\u00ebt\u00eb. Megjithat\u00eb, shum\u00eb ofrues fillojn\u00eb t\u00eb manipullojn\u00eb kur flitet p\u00ebr r\u00ebnien e performanc\u00ebs kur aktivizohen moda t\u00eb ndryshme t\u00eb funksionimit t\u00eb SXD-s\u00eb.<\/p>\n
N\u00eb industrin\u00eb ton\u00eb, praktikisht \u00ebsht\u00eb e zakonshme t\u00eb jepen SXD p\u00ebr testim p\u00ebr nj\u00eb ose dy dit\u00eb. Ofruesi fillon nj\u00eb test 20-minut\u00ebsh n\u00eb nj\u00eb sistem t\u00eb zbraz\u00ebt, duke marr\u00eb tregues t\u00eb jasht\u00ebzakonsh\u00ebm t\u00eb performanc\u00ebs. Nd\u00ebrsa n\u00eb shfryt\u00ebzim t\u00eb v\u00ebrtet\u00eb, dalin shpejt \u2018kambanat e n\u00ebnshkrimit\u2019. Pas nj\u00eb dite, vlerat e bukura t\u00eb IOPS zvog\u00eblohen dyfih dhe trefish, dhe n\u00ebse SXD mbushet deri n\u00eb 80%, ato b\u00ebhen edhe m\u00eb t\u00eb ulta. Aktivizimi i RAID 5 n\u00eb vend t\u00eb RAID 10 humb edhe 10-15%, dhe n\u00eb modalitetin e metro-kllasterit performanca reduktohet gjithashtu p\u00ebr gjysm\u00eb.<\/p>\n
Gjith\u00e7ka q\u00eb u p\u00ebrmend m\u00eb par\u00eb, nuk ka t\u00eb b\u00ebj\u00eb me Dorado V6. Klient\u00ebt tan\u00eb kan\u00eb mund\u00ebsin\u00eb t\u00eb fillojn\u00eb nj\u00eb test t\u00eb performanc\u00ebs p\u00ebr fundjav\u00eb ose t\u00eb pakt\u00ebn p\u00ebr nj\u00eb nat\u00eb. At\u00ebher\u00eb dalin n\u00eb pah mbledhjet e mbeturinave dhe b\u00ebhet e qart\u00eb si aktivizimi i opsioneve t\u00eb ndryshme \u2014 si\u00e7 jan\u00eb snapshot-et dhe replikimi \u2014 ndikon n\u00eb vler\u00ebn e arritshme t\u00eb IOPS.<\/p>\n
N\u00eb Dorado V6, snapshot-et dhe RAID me paritet praktikisht nuk nd\u5f71\u54cdojn\u00eb performanc\u00ebn (3\u20135% n\u00eb vend t\u00eb 10-15%). Pro\u00e7esi i mbledhjes s\u00eb mbetjeve (mbushja e qelizave t\u00eb ruajtjes me zero), kompresimi, dhe deduplikimi n\u00eb SAN t\u00eb mbushur n\u00eb 80% gjithmon\u00eb do t\u00eb ndikojn\u00eb n\u00eb shpejt\u00ebsin\u00eb e p\u00ebrgjithshme t\u00eb p\u00ebrpunimit t\u00eb k\u00ebrkesave. Por Dorado V6 \u00ebsht\u00eb interesante sepse, \u00e7far\u00ebdo kombinimi t\u00eb funksioneve dhe mekanizmave mbrojt\u00ebs q\u00eb aktivizoni, performanca p\u00ebrfundimtare e SAN nuk do t\u00eb bjer\u00eb n\u00ebn 80% t\u00eb treguesit t\u00eb arritur pa ngarkes\u00eb.<\/p>\n
Balancimi i ngarkes\u00ebs<\/h2>\n \nPerformanca e lart\u00eb e Dorado V6 arrihet p\u00ebrmes balansimit n\u00eb \u00e7do hap, konkretisht:<\/p>\n
\nmultipassimit;<\/li>\n p\u00ebrdorim t\u00eb disa lidhjeve nga nj\u00eb host;<\/li>\n prania e nj\u00eb fabrike frontend;<\/li>\n ndarjes s\u00eb pun\u00ebs s\u00eb kontrolluesve t\u00eb SAN;<\/li>\n distribuimit t\u00eb ngarkes\u00ebs n\u00eb t\u00eb gjith\u00eb ruajt\u00ebsit n\u00eb nivelin RAID 2.0+.<\/li>\n<\/ul>\n\nN\u00eb parim, kjo \u00ebsht\u00eb nj\u00eb praktik\u00eb e zakonshme. Sot, pak njer\u00ebz mbajn\u00eb t\u00eb gjitha t\u00eb dh\u00ebnat n\u00eb nj\u00eb LUN: t\u00eb gjith\u00eb p\u00ebrpiqen t\u00eb ken\u00eb, le t\u00eb thon\u00eb, tet\u00eb, ose dyzet, dhe ndoshta edhe m\u00eb shum\u00eb. Ky \u00ebsht\u00eb nj\u00eb qasje e qart\u00eb dhe e duhur, q\u00eb ne e p\u00ebrkrahim. Por n\u00ebse detyra juaj k\u00ebrkon vet\u00ebm nj\u00eb LUN, q\u00eb \u00ebsht\u00eb m\u00eb e leht\u00eb p\u00ebr t'u menaxhuar, zgjidhjet tona arkitekturore lejojn\u00eb t\u00eb arrijm\u00eb performanc\u00ebn 80% t\u00eb disponueshme kur p\u00ebrdoren disa LUN.<\/p>\n
Planifikimi dinamik i ngarkes\u00ebs s\u00eb procesor\u00ebve<\/h2>\n \nDistribuimi i ngarkes\u00ebs n\u00eb procesor\u00eb kur p\u00ebrdoret nj\u00eb LUN \u00ebsht\u00eb realizuar si m\u00eb posht\u00eb: detyrat akoma n\u00eb nivelin e LUN ndahen n\u00eb 'shard' t\u00eb vogla, secila e caktuar n\u00eb m\u00ebnyr\u00eb t\u00eb fort\u00eb p\u00ebr kontrollues t\u00eb ve\u00e7ant\u00eb n\u00eb 'motor'. Kjo \u00ebsht\u00eb b\u00ebr\u00eb p\u00ebr t\u00eb siguruar q\u00eb sistemi t\u00eb mos humbas\u00eb performanc\u00ebn, nd\u00ebrsa 'k\u00ebrcen' me k\u00ebt\u00eb cop\u00eb t\u00eb dh\u00ebnash nd\u00ebrmjet kontrolluesve t\u00eb ndrysh\u00ebm. <\/p>\n
Nj\u00eb mekaniz\u00ebm tjet\u00ebr p\u00ebr ruajtjen e performanc\u00ebs s\u00eb lart\u00eb \u00ebsht\u00eb planifikimi dinamik, ku disa b\u00ebrthama t\u00eb procesor\u00ebve mund t\u00eb ndahen p\u00ebr grupe t\u00eb ndryshme detyrash. P\u00ebr shembull, n\u00ebse sistemi aktualisht \u00ebsht\u00eb n\u00eb pritje n\u00eb nivelin e deduplikimit dhe kompresimit, nj\u00eb pjes\u00eb e b\u00ebrthamave mund t\u00eb aktivizohet n\u00eb procesin e sh\u00ebrbimit t\u00eb hyrje-daljeve. Ose anasjelltas. T\u00eb gjitha k\u00ebto kryhen automatikisht dhe n\u00eb m\u00ebnyr\u00eb transparente p\u00ebr p\u00ebrdoruesin. <\/p>\n
T\u00eb dh\u00ebnat mbi ngarkes\u00ebn aktuale t\u00eb secilit nga b\u00ebrthamat Dorado V6 nuk shfaqen n\u00eb nd\u00ebrfaqen grafike, por p\u00ebrmes komand\u00ebs mund t\u00eb aksesoni sistemin operativ t\u00eb kontrolluesit dhe t\u00eb p\u00ebrdorni komand\u00ebn e zakonshme linux. top<\/i>.<\/p>\n
Mb\u00ebshtetje p\u00ebr NVMe dhe RoCE<\/h2>\n \nSi\u00e7 \u00ebsht\u00eb p\u00ebrmendur tashm\u00eb, n\u00eb k\u00ebt\u00eb moment Dorado V6 mb\u00ebshtet plot\u00ebsisht NVMe mbi Fibre Channel \u00abnga kutia\u00bb dhe nuk k\u00ebrkon asnj\u00eb licenc\u00eb. N\u00eb mes t\u00eb vitit do t\u00eb shfaqet mb\u00ebshtetje p\u00ebr modalitetin NVMe mbi Ethernet. P\u00ebr ta p\u00ebrdorur at\u00eb n\u00eb m\u00ebnyr\u00eb efektive, do t\u00eb nevojitet mb\u00ebshtetje Ethernet me qasje t\u00eb drejtp\u00ebrdrejt\u00eb n\u00eb kujtes\u00eb (DMA) versioni v2.0 si nga vet\u00eb SCSI, ashtu edhe nga switch-et dhe adaptori t\u00eb rrjetit. P\u00ebr shembull, si\u00e7 jan\u00eb Mellanox ConnectX-4 ose ConnectX-5. Mund t\u00eb p\u00ebrdoren edhe kartat e rrjetit t\u00eb bazuara n\u00eb \u00e7ipet tona. Po ashtu, mb\u00ebshtetja RoCE duhet t\u00eb realizohet n\u00eb nivelin e sistemit operativ.<\/p>\n
N\u00eb p\u00ebrgjith\u00ebsi, ne e konsiderojm\u00eb Dorado V6 si nj\u00eb sistem t\u00eb orientuar drejt NVMe. Pavar\u00ebsisht nga mb\u00ebshtetja ekzistuese p\u00ebr Fibre Channel dhe iSCSI, planifikohet kalimi n\u00eb Ethernet me shpejt\u00ebsi t\u00eb lart\u00eb me RDMA n\u00eb t\u00eb ardhmen.<\/p><\/blockquote>\n
Nj\u00eb shkas marketingu<\/h2>\n \nDuke pasur parasysh se sistemi Dorado V6 ka nj\u00eb q\u00ebndrueshm\u00ebri t\u00eb lart\u00eb ndaj gabimeve, shkall\u00ebzohet mir\u00eb horizontalisht, mb\u00ebshtet teknologji t\u00eb ndryshme migrimi etj., efekti ekonomik i blerjes s\u00eb tij shfaqet me fillimin e shfryt\u00ebzimit intensiv t\u00eb SCSI. Ne do t\u00eb p\u00ebrpiqemi t\u00eb vazhdojm\u00eb ta b\u00ebjm\u00eb zot\u00ebrimin e sistemit sa m\u00eb fitimprur\u00ebs, edhe n\u00ebse n\u00eb fillim kjo nuk vihet re.<\/p>\n
N\u00eb ve\u00e7anti, ne kemi formuar programin FLASH EVER, i lidhur me zgjatjen e ciklit t\u00eb jet\u00ebs s\u00eb SCSI dhe i destinuar p\u00ebr t\u00eb leht\u00ebsuar sa m\u00eb shum\u00eb klientin gjat\u00eb p\u00ebrmir\u00ebsimeve.<\/p>\n
\nmund\u00ebsia e z\u00ebvend\u00ebsimit gradual t\u00eb kontrolluesve dhe raft\u00ebve me disqe me versionet e reja pa z\u00ebvend\u00ebsuar t\u00ebr\u00eb pajisjen (p\u00ebr sistemet Dorado V6 t\u00eb klas\u00ebs hi-end);<\/li>\n mund\u00ebsia e ruajtjes federale (bashkimi i versioneve t\u00eb ndryshme t\u00eb Dorado si pjes\u00eb e nj\u00eb klasteri hibrid SCSI);<\/li>\n virtualizimin inteligjent (mund\u00ebsia e p\u00ebrdorimit t\u00eb pajisjeve t\u00eb pal\u00ebve t\u00eb treta si pjes\u00eb e zgjidhjes Dorado).<\/li>\n<\/ul>\n\n
P\u00ebrve\u00e7 t\u00eb tjerash, lidhur me pandemin\u00eb, pavar\u00ebsisht se sa do t\u00eb zgjas\u00eb ajo, shfaqet nj\u00eb pyetje ve\u00e7an\u00ebrisht e mpreht\u00eb mbi sigurimin e punonj\u00ebsve t\u00eb distancuar me tavolina virtuale. N\u00eb k\u00ebt\u00eb proces, Dorado V6 do t\u00eb mund t\u00eb ofronte zgjidhje p\u00ebr shum\u00eb probleme. P\u00ebr k\u00ebt\u00eb, ne po b\u00ebjm\u00eb t\u00eb gjitha p\u00ebrpjekjet e nevojshme, p\u00ebrfshir\u00eb pothuajse arritjen e nj\u00eb marr\u00ebveshjeje p\u00ebr p\u00ebrfshirjen e sistemit t\u00eb ri n\u00eb list\u00ebn e pajtueshm\u00ebris\u00eb t\u00eb VMware.<\/p>\n
***<\/h2>\n \nP\u00ebr m\u00eb tep\u00ebr, mos harroni p\u00ebr webinar\u00ebt tan\u00eb t\u00eb shumt\u00eb, t\u00eb cil\u00ebt zhvillohen jo vet\u00ebm n\u00eb segmentin rusishtfol\u00ebs, por edhe n\u00eb nivel global. Lista e webinar\u00ebve p\u00ebr prillin \u00ebsht\u00eb e disponueshme n\u00eb linkun<\/a><\/noindex>. habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"\u041f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u043d\u0435 \u0441\u043f\u0435\u0448\u0438\u0442\u0435 \u0441 \u0432\u044b\u0432\u043e\u0434\u0430\u043c\u0438 \u0438\u0437-\u0437\u0430 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430! \u0423 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u0443\u0432\u0435\u0441\u0438\u0441\u0442\u044b\u0435 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u044b \u0432 \u0435\u0433\u043e \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435, \u0438 \u043c\u044b \u0443\u043f\u0430\u043a\u043e\u0432\u0430\u043b\u0438 \u0438\u0445, \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u043e\u0433\u043b\u0438 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e. \u041f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c \u0432\u0430\u0448\u0435\u043c\u0443 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044e \u043f\u043e\u0441\u0442 \u043e \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0438 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0430\u0445 \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0430\u0448\u0435\u0439 \u043d\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0432 \u044f\u043d\u0432\u0430\u0440\u0435 2020 \u0433\u043e\u0434\u0430. \u041f\u043e \u043d\u0430\u0448\u0435\u043c\u0443 \u0443\u0431\u0435\u0436\u0434\u0435\u043d\u0438\u044e, \u0433\u043b\u0430\u0432\u043d\u043e\u0435 \u043a\u043e\u043d\u043a\u0443\u0440\u0435\u043d\u0442\u043d\u043e\u0435 \u043f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0443 \u0421\u0425\u0414 Dorado V6 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0442 \u0438\u043c\u0435\u043d\u043d\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":79692,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-79691","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t
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