Sannu, masu karatun Habr! Batun wannan labarin zai kasance aiwatar da kayan aikin dawo da bala'i a cikin tsarin ajiyar injin AERODISK. Da farko, muna so mu rubuta a cikin labarin daya game da kayan aikin biyu: maimaitawa da metrocluster, amma, da rashin alheri, labarin ya yi tsayi sosai, don haka mun raba labarin zuwa sassa biyu. Mu tafi daga sauki zuwa hadaddun. A wannan labarin, za mu kafa da kuma gwada synchronous kwafi - za mu sauke daya data cibiyar, da kuma karya hanyar sadarwa tsakanin data cibiyoyin mu ga abin da ya faru.
Abokan cinikinmu sukan yi mana tambayoyi daban-daban game da kwafi, don haka kafin mu ci gaba da kafawa da gwada aiwatar da kwafin, za mu ɗan gaya muku menene kwafi a cikin ajiya.
A bit of ka'idar
Maimaitawa a cikin tsarin ajiya wani tsari ne mai ci gaba na tabbatar da asalin bayanai akan tsarin ajiya da yawa a lokaci guda. A fasaha, ana yin kwafi ta hanyoyi biyu.
Maimaita aiki tare - wannan shine kwafin bayanai daga babban tsarin ajiya zuwa madadin, sannan kuma tabbatarwa na wajibi daga duka tsarin ajiya cewa an yi rikodin bayanan kuma an tabbatar da su. Bayan tabbatarwa a bangarorin biyu (duka tsarin ajiya) an yi la'akari da bayanan da aka yi rikodin kuma ana iya aiki tare da su. Wannan yana tabbatar da garantin ainihin bayanan akan duk tsarin ajiya da ke shiga cikin kwafin.
Amfanin wannan hanyar:
- Bayanai koyaushe iri ɗaya ne akan duk tsarin ajiya
Fursunoni:
- Babban farashin maganin (tashoshin sadarwa mai sauri, fiber na gani mai tsada, transceivers mai tsayi, da sauransu)
- Ƙuntatawa ta nisa (a tsakanin dubun kilomita da yawa)
- Babu wata kariya daga ɓarna na ma'ana (idan bayanai sun lalace (da gangan ko da gangan) a kan babban tsarin ajiya, zai zama ta atomatik kuma nan take ya lalace a madadin, tunda bayanan koyaushe iri ɗaya ne (wannan shine paradox).
Maimaita asynchronous - wannan kuma yana kwafin bayanai daga babban tsarin ajiya zuwa madadin, amma tare da wani ɗan lokaci kuma ba tare da buƙatar tabbatar da rubutun a wancan gefen ba. Kuna iya aiki tare da bayanai nan da nan bayan yin rikodin su zuwa babban tsarin ajiya, kuma akan tsarin ajiyar ajiyar bayanan za su kasance bayan ɗan lokaci. Asalin bayanan a cikin wannan yanayin, ba shakka, ba a tabbatar da komai ba. Bayanan da ke kan tsarin ma'ajiyar ma'ajiya koyaushe kadan ne "a baya."
Ribobi na maimaita asynchronous:
- Maganin ƙarancin kuɗi (kowane tashoshi na sadarwa, zaɓin gani)
- Babu ƙuntatawa ta nesa
- A tsarin ma’adanar ajiyar bayanai, bayanai ba sa lalacewa idan sun lalace a kan babban ɗaya (aƙalla na ɗan lokaci); idan bayanan sun lalace, koyaushe kuna iya dakatar da kwafin don hana ɓarnawar bayanai akan tsarin ma’adanar ajiya.
Fursunoni:
- Bayanai a cibiyoyin bayanai daban-daban koyaushe ba iri ɗaya bane
Don haka, zaɓin yanayin maimaitawa ya dogara da manufofin kasuwanci. Idan yana da mahimmanci a gare ku cewa cibiyar bayanan ajiyar ta ƙunshi ainihin bayanai iri ɗaya da babban cibiyar bayanai (watau, buƙatun kasuwanci don RPO = 0), to dole ne ku fitar da tsabar kuɗi kuma ku haƙura da iyakokin haɗin gwiwa. kwafi. Kuma idan jinkiri a cikin bayanan bayanan yana karɓa ko kuma kawai babu kuɗi, to tabbas kuna buƙatar amfani da hanyar asynchronous.
Bari kuma mu haskaka irin wannan yanayin daban (mafi daidai, topology) azaman metrocluster. A cikin yanayin metrocluster, ana amfani da kwafi na aiki tare, amma, ba kamar kwafi na yau da kullun ba, metrocluster yana ba da damar duka tsarin ajiya suyi aiki a yanayin aiki. Wadancan. ba ku da rabuwa tsakanin masu aiki da cibiyoyin bayanan jiran aiki. Aikace-aikace suna aiki lokaci guda tare da tsarin ajiya guda biyu, waɗanda ke cikin jiki a cikin cibiyoyin bayanai daban-daban. Sauƙaƙe lokacin hatsarori a cikin irin wannan yanayin ba su da yawa (RTO, yawanci mintuna). A cikin wannan labarin ba za mu yi la'akari da aiwatar da metrocluster ba, tun da yake wannan batu ne mai girma kuma mai ƙarfi, don haka za mu keɓe wani labarin dabam, labarin na gaba zuwa gare shi, a ci gaba da wannan.
Har ila yau, sau da yawa, lokacin da muke magana game da kwafi ta amfani da tsarin ajiya, mutane da yawa suna da tambaya mai ma'ana: > "Yawancin aikace-aikacen suna da nasu kayan aikin kwafi, me yasa suke amfani da kwafi akan tsarin ajiya? Shin ya fi ko muni?
Babu wata bayyananniyar amsa anan, don haka ga hujjojin FOR da CONS:
Hujjoji DON kwafin ajiya:
- Sauƙin mafita. Tare da kayan aiki guda ɗaya, zaku iya kwafi duk saitin bayananku, ba tare da la'akari da nau'in kaya da aikace-aikace ba. Idan kun yi amfani da kwafi daga aikace-aikace, dole ne ku saita kowace aikace-aikacen daban. Idan akwai fiye da 2 daga cikinsu, to wannan yana da matuƙar wahala kuma yana da tsada (maimaita aikace-aikacen yawanci yana buƙatar keɓantacce kuma ba lasisi kyauta ga kowane aikace-aikacen ba. Amma ƙari akan wannan ƙasa).
- Kuna iya kwafi kowane abu - kowane aikace-aikace, kowane bayanai - kuma koyaushe zai kasance mai daidaituwa. Yawancin (mafi yawan) aikace-aikacen ba su da damar kwafi, kuma kwafi daga tsarin ajiya shine kawai hanyar samar da kariya daga bala'o'i.
- Babu buƙatar ƙarin biyan kuɗi don aikin kwafin aikace-aikacen. A matsayinka na mai mulki, ba arha ba ne, kamar lasisin kwafin tsarin ajiya. Amma dole ne ku biya lasisi don kwafin ajiya sau ɗaya, kuma lasisin kwafin aikace-aikacen yana buƙatar siyan kowace aikace-aikacen daban. Idan akwai irin waɗannan aikace-aikacen da yawa, to yana biyan kuɗi mai kyau dinari kuma farashin lasisi don kwafin ajiya ya zama digo a cikin guga.
Hujja AGAINST maimaita ajiya:
- Kwafi ta hanyar aikace-aikacen yana da ƙarin ayyuka daga ra'ayi na aikace-aikacen kansu, aikace-aikacen ya fi sanin bayanansa (a fili), don haka akwai ƙarin zaɓuɓɓuka don aiki tare da su.
- Masu kera wasu aikace-aikacen ba sa garantin daidaiton bayanansu idan an yi kwafi ta amfani da kayan aikin ɓangare na uku. *
*- Tassin rigima. Misali, sanannen masana'anta na DBMS ya daɗe yana bayyanawa a hukumance cewa DBMS ɗin su kawai za a iya kwafi su ta hanyar amfani da hanyoyin su, kuma sauran kwafin (ciki har da tsarin ajiya) “ba gaskiya bane.” Amma rayuwa ta nuna cewa ba haka ba ne. Mafi mahimmanci (amma wannan bai tabbata ba) wannan ba shine kawai ƙoƙarin sayar da ƙarin lasisi ga abokan ciniki ba.
A sakamakon haka, a mafi yawan lokuta, kwafi daga tsarin ajiya ya fi kyau, saboda Wannan zaɓi ne mafi sauƙi kuma maras tsada, amma akwai lokuta masu rikitarwa lokacin da ake buƙatar takamaiman aikin aikace-aikacen, kuma ya zama dole a yi aiki tare da maimaita matakin aikace-aikacen.
Anyi tare da ka'idar, yanzu yi aiki
Za mu saita kwafin a cikin dakin binciken mu. A cikin yanayin dakin gwaje-gwaje, mun kwaikwayi cibiyoyin bayanai guda biyu (a zahiri, akwatuna biyu masu kusa waɗanda suke da alama a cikin gine-gine daban-daban). Tsayin ya ƙunshi na'urorin ajiyar injin N2 guda biyu, waɗanda ke haɗa juna ta hanyar igiyoyi na gani. An haɗa uwar garken jiki da ke gudana Windows Server 2016 zuwa tsarin ajiya guda biyu ta amfani da 10Gb Ethernet. Tsayin yana da sauƙi, amma wannan baya canza ainihin.
A tsari yana kama da haka:
A haƙiƙance, ana tsara kwafi kamar haka:
Yanzu bari mu dubi aikin kwafin da muke da shi yanzu.
Ana goyan bayan hanyoyi biyu: asynchronous da synchronous. Yana da ma'ana cewa yanayin aiki tare yana iyakance ta nesa da tashar sadarwa. Musamman, yanayin aiki tare yana buƙatar amfani da fiber azaman kimiyyar lissafi da 10 Gigabit Ethernet (ko mafi girma).
Tazarar da aka goyan baya don kwafi na aiki tare shine kilomita 40, ƙimar jinkirin tashar gani tsakanin cibiyoyin bayanai ya kai milli seconds 2. Gabaɗaya, zai yi aiki tare da jinkiri mai yawa, amma sannan za a sami raguwa mai ƙarfi yayin rikodin (wanda kuma ma'ana ne), don haka idan kuna shirin kwafin daidaitawa tsakanin cibiyoyin bayanai, yakamata ku bincika ingancin na'urorin gani da jinkiri.
Abubuwan buƙatun don kwafin asynchronous ba su da tsanani sosai. Fiye da daidai, ba su nan kwata-kwata. Duk wani haɗin Ethernet mai aiki zai yi.
A halin yanzu, tsarin ajiya na AERODISK ENGINE yana goyan bayan kwafi don toshe na'urorin (LUNs) ta hanyar ka'idar Ethernet (a kan jan ƙarfe ko na gani). Don ayyukan da ake buƙata ta hanyar SAN masana'anta akan Fiber Channel, a halin yanzu muna ƙara bayani mai dacewa, amma ba a shirya ba tukuna, don haka a cikin yanayinmu, kawai Ethernet.
Maimaitawa na iya aiki tsakanin kowane tsarin ajiya na ENGINE (N1, N2, N4) daga ƙananan tsarin zuwa tsofaffi da akasin haka.
Ayyukan duka hanyoyin kwafi iri ɗaya ne. A ƙasa akwai ƙarin cikakkun bayanai game da abin da ke akwai:
- Maimaita "ɗaya zuwa ɗaya" ko "ɗaya zuwa ɗaya", wato, sigar al'ada tare da cibiyoyin bayanai guda biyu, babba da madadin.
- Maimaitawa shine "daya zuwa dayawa" ko "daya zuwa dayawa", watau. LUN ɗaya za a iya kwafi shi zuwa tsarin ajiya da yawa a lokaci ɗaya
- Kunna, kashewa, da maimaita “juya”, bi da bi, don kunna, kashe, ko canza alkiblar kwafi.
- Ana samun maimaitawa duka biyun RDG (Rukunin Rarraba Raid) da DDP (Dynamic Disk Pool). Koyaya, LUNs na wurin tafki na RDG kawai za'a iya maimaita shi zuwa wani RDG. Daidai da DDP.
Akwai ƙarin ƙananan siffofi da yawa, amma babu takamaiman ma'ana a jera su; za mu ambace su yayin da muke saita su.
Saita kwafi
Tsarin saitin yana da sauƙi kuma ya ƙunshi matakai uku.
- Tsarin hanyar sadarwa
- Saitin ajiya
- Saita dokoki (haɗi) da taswira
Wani muhimmin batu a cikin kafa kwafi shi ne cewa ya kamata a maimaita matakai biyu na farko akan tsarin ajiya mai nisa, mataki na uku - kawai a kan babba.
Saita albarkatun cibiyar sadarwa
Mataki na farko shine saita tashoshin sadarwa ta hanyar da za'a iya yada zirga-zirgar zirga-zirga. Don yin wannan, kuna buƙatar kunna tashoshin jiragen ruwa kuma saita adiresoshin IP ɗin su a cikin sashin adaftar gaba-ƙarshen.
Bayan wannan, muna buƙatar ƙirƙirar tafki (a cikin yanayinmu RDG) da kuma IP mai kama-da-wane don maimaitawa (VIP). VIP adireshi ne na IP mai iyo wanda ke daure da adiresoshin "jiki" guda biyu na masu kula da ajiya (tashoshin da muka tsara yanzu). Wannan zai zama babban abin dubawa. Hakanan zaka iya aiki ba tare da VIP ba, amma tare da VLAN, idan kuna buƙatar aiki tare da zirga-zirgar ababen hawa.
Tsarin ƙirƙirar VIP don kwafi bai bambanta da ƙirƙirar VIP don I/O (NFS, SMB, iSCSI). A wannan yanayin, muna ƙirƙirar VIP na yau da kullun (ba tare da VLAN ba), amma tabbatar da nuna cewa don yin kwafi ne (ba tare da wannan alamar ba za mu iya ƙara VIP zuwa doka a mataki na gaba).
Dole ne VIP ya kasance a cikin rukunin yanar gizo iri ɗaya da tashoshin IP a tsakanin waɗanda suke iyo.
Muna maimaita waɗannan saitunan akan tsarin ajiya mai nisa, tare da IP daban-daban, ba shakka.
VIPs daga tsarin ajiya daban-daban na iya kasancewa a cikin mabambantan rabe-raben rabe-rabe daban-daban, babban abin da ke faruwa a tsakanin su. A cikin yanayinmu, an nuna wannan misalin daidai (192.168.3.XX da 192.168.2.XX)
Wannan yana kammala shirye-shiryen ɓangaren cibiyar sadarwa.
Saitin ajiya
Saita ajiya don kwafi ya bambanta da yadda aka saba kawai domin muna yin taswirar ta hanyar menu na musamman "Taswirar Maimaitawa". In ba haka ba duk abin da yake daidai da na al'ada saitin. Yanzu, cikin tsari.
A cikin tafkin R02 da aka ƙirƙira a baya, kuna buƙatar ƙirƙirar LUN. Bari mu ƙirƙira shi kuma mu kira shi LUN1.
Hakanan muna buƙatar ƙirƙirar LUN iri ɗaya akan tsarin ajiya mai nisa mai girman girman iri ɗaya. Mun halitta. Don guje wa rudani, bari mu kira LUN LUN1R mai nisa
Idan muna buƙatar ɗaukar LUN wanda ya riga ya wanzu, to yayin da muke kafa kwafin, za mu buƙaci cire wannan LUN mai albarka daga mai masaukin, kuma kawai ƙirƙirar LUN mara kyau na girman daidai da tsarin ajiya mai nisa.
Saitin ajiya ya cika, bari mu ci gaba don ƙirƙirar ƙa'idar kwafi.
Ƙirƙirar ƙa'idodin kwafi ko hanyoyin haɗin kai
Bayan ƙirƙirar LUNs akan tsarin ajiya, wanda zai zama na farko a halin yanzu, muna saita tsarin maimaitawa LUN1 akan tsarin ajiya 1 zuwa LUN1R akan tsarin ajiya 2.
Ana yin saitin a cikin menu na "Remote replication".
Bari mu kirkiro doka. Don yin wannan, kuna buƙatar ƙayyade mai karɓar kwafin. A can kuma mun saita sunan haɗin da nau'in maimaitawa (synchronous ko asynchronous).
A cikin filin "tsarin nesa" muna ƙara tsarin ajiyar mu2. Don ƙarawa, kuna buƙatar amfani da tsarin tsarin ajiya na IP (MGR) da sunan LUN mai nisa wanda za mu yi kwafi (a cikin yanayinmu, LUN1R). Ana buƙatar IPs masu sarrafawa kawai a matakin ƙara haɗin gwiwa; ba za a watsa zirga-zirgar zirga-zirga ta hanyar su ba; za a yi amfani da VIP ɗin da aka tsara a baya don wannan.
Tuni a wannan mataki za mu iya ƙara tsarin nesa fiye da ɗaya don "ɗayan zuwa da yawa" topology: danna maɓallin "ƙara node", kamar yadda yake a cikin hoton da ke ƙasa.
A cikin yanayinmu, tsarin nesa ɗaya ne kawai, don haka mun iyakance kanmu ga wannan.
Tsarin yana shirye. Lura cewa ana ƙara ta atomatik akan duk mahalarta kwafi (a cikin yanayinmu akwai biyu daga cikinsu). Kuna iya ƙirƙirar ƙa'idodi da yawa kamar yadda kuke so, don kowane adadin LUNs kuma a kowace hanya. Misali, don daidaita nauyin, zamu iya kwafi wani ɓangare na LUNs daga tsarin ajiya 1 zuwa tsarin ajiya 2, ɗayan kuma, akasin haka, daga tsarin ajiya 2 zuwa tsarin ajiya 1.
Tsarin ajiya1. Nan da nan bayan halitta, an fara aiki tare.
Tsarin ajiya2. Muna ganin ƙa'ida ɗaya, amma aiki tare ya riga ya ƙare.
LUN1 akan tsarin ajiya 1 yana cikin Matsayi na Farko, wato, yana aiki. LUN1R akan tsarin ajiya 2 yana cikin rawar Sakandare, wato, yana kan jiran aiki idan tsarin ajiya 1 ya gaza.
Yanzu za mu iya haɗa LUN ɗinmu zuwa mai masaukin baki.
Za mu haɗa ta iSCSI, kodayake ana iya yin ta ta FC. Saita taswira ta iSCSI LUN a cikin kwafi kusan bai bambanta da yanayin da aka saba ba, don haka ba za mu yi la'akari da wannan dalla-dalla a nan ba. Idan wani abu, an kwatanta wannan tsari a cikin labarin "".
Bambancin kawai shine mu ƙirƙiri taswira a cikin menu na "Mai-maimaitawa".
Mun kafa taswira kuma muka ba LUN ga mai masaukin baki. Mai gida ya ga LUN.
Muna tsara shi zuwa tsarin fayil na gida.
Shi ke nan, saitin ya cika. Gwaji zai zo na gaba.
Gwaji
Za mu gwada manyan al'amura guda uku.
- Canjin matsayi na yau da kullun na Sakandare> Firamare. Ana buƙatar sauya matsayi na yau da kullun idan akwai, alal misali, muna buƙatar yin wasu ayyuka na rigakafi a cikin babban cibiyar bayanai kuma a wannan lokacin, don samun damar bayanan, muna canja wurin kaya zuwa cibiyar adana bayanai.
- Canja wurin rawar gaggawa ta Sakandare> Firamare (rashin cibiyar bayanai). Wannan shi ne babban yanayin da ake samun kwafi, wanda zai iya taimakawa wajen tsira da cikakkiyar gazawar cibiyar bayanai ba tare da dakatar da kamfanin na tsawon lokaci ba.
- Rushewar hanyoyin sadarwa tsakanin cibiyoyin bayanai. Duba ingantattun halayen tsarin ajiya guda biyu a cikin yanayi inda saboda wasu dalilai babu tashar sadarwa tsakanin cibiyoyin bayanai (misali, tonowar da aka tona a wurin da bai dace ba kuma ya karya duhun gani).
Da farko, za mu fara rubuta bayanai zuwa ga LUN (rubutun fayiloli tare da bayanan bazuwar). Nan da nan mun ga cewa ana amfani da hanyar sadarwa tsakanin tsarin ajiya. Wannan yana da sauƙin fahimta idan kun buɗe nauyin saka idanu na tashoshin jiragen ruwa waɗanda ke da alhakin kwafi.
Duk tsarin ajiya yanzu suna da bayanan "mai amfani", zamu iya fara gwajin.
Kawai, bari mu duba jimlar zantawar ɗaya daga cikin fayilolin mu rubuta su.
Canjin matsayi na yau da kullun
Ana iya yin aikin canza matsayin (canza hanyar kwafi) tare da kowane tsarin ajiya, amma har yanzu kuna buƙatar zuwa duka biyun, tunda kuna buƙatar kashe taswira akan Firamare, kuma kunna shi akan Sakandare (wanda zai zama Primary). ).
Wataƙila tambaya mai ma'ana a yanzu ta taso: me yasa ba a sarrafa wannan ba? Amsar ita ce: yana da sauƙi, maimaitawa hanya ce mai sauƙi na juriya ga bala'i, bisa ga ayyukan hannu kawai. Don sarrafa waɗannan ayyukan, akwai yanayin metrocluster; yana da cikakken sarrafa kansa, amma tsarin sa ya fi rikitarwa. Za mu rubuta game da kafa metrocluster a labari na gaba.
A kan babban tsarin ajiya, muna kashe taswira don tabbatar da cewa rikodi ya tsaya.
Sa'an nan kuma a kan ɗayan tsarin ajiya (ba komai, a kan babba ko madadin) a cikin menu na "Remote replication", zaɓi haɗin mu REPL1 kuma danna "Change role".
Bayan ƴan daƙiƙa, LUN1R (tsarin ajiyar ajiya) ya zama Firamare.
Muna taswirar LUN1R tare da tsarin ajiya2.
Bayan wannan, E: drive ɗinmu yana haɗe kai tsaye zuwa mai watsa shiri, kawai a wannan lokacin ya “zo” daga LUN1R.
Kawai idan, muna kwatanta jimlar zanta.
Hakazalika. Gwaji ya wuce.
Rashin nasara. Rashin gazawar cibiyar bayanai
A halin yanzu, babban tsarin ajiya bayan sauyawa na yau da kullum shine tsarin ajiya 2 da LUN1R, bi da bi. Don yin koyi da haɗari, za mu kashe wuta a kan masu sarrafa ma'aji biyu.
Babu sauran damar zuwa gare shi.
Bari mu ga abin da ke faruwa akan tsarin ajiya na 1 (madaidaicin ɗaya a yanzu).
Mun ga cewa babu Firamare LUN (LUN1R). Saƙon kuskure ya bayyana a cikin rajistan ayyukan, a cikin kwamitin bayanai, da kuma a cikin tsarin kwafi kanta. Saboda haka, a halin yanzu babu bayanai daga mai masaukin baki.
Canza rawar LUN1 zuwa Firamare.
Ina yin taswira ga mai gida.
Tabbatar cewa drive E ya bayyana akan mai watsa shiri.
Muna duba zanta.
Komai yana lafiya. Tsarin ajiya ya sami nasarar tsira daga faduwar cibiyar bayanai, wacce ke aiki. Matsakaicin lokacin da muka yi amfani da shi don haɗa kwafin "juyawa" da haɗa LUN daga cibiyar bayanan ajiyar kusan mintuna 3 ne. A bayyane yake cewa a cikin samar da ainihin duk abin da ya fi rikitarwa, kuma ban da ayyuka tare da tsarin ajiya, kuna buƙatar yin ƙarin ayyuka da yawa akan hanyar sadarwa, a kan runduna, a cikin aikace-aikace. Kuma a cikin rayuwa wannan lokaci zai fi tsayi sosai.
Anan zan so in rubuta cewa komai, an kammala gwajin cikin nasara, amma kada mu yi gaggawa. Babban tsarin ajiya shine "karya", mun san cewa lokacin da ya "fadi", yana cikin rawar farko. Me zai faru idan ya kunna ba zato ba tsammani? Za a sami matsayi na farko guda biyu, wanda yayi daidai da lalata bayanai? Bari mu duba shi yanzu.
Bari mu fara kunna tsarin ma'ajiyar da ke ƙasa.
Yana ɗauka na ƴan mintuna sannan ya dawo aiki bayan ɗan gajeren aiki tare, amma a matsayin Sakandare.
Duk Ok. Raba-kwakwalwa bai faru ba. Mun yi tunani game da wannan, kuma ko da yaushe bayan faɗuwar tsarin ajiya yana tashi zuwa matsayin Sakandare, ko da wane irin rawa yake cikin "lokacin rayuwa." Yanzu muna iya cewa tabbas gwajin gazawar cibiyar bayanai ya yi nasara.
Rashin gazawar hanyoyin sadarwa tsakanin cibiyoyin bayanai
Babban aikin wannan gwajin shine tabbatar da cewa tsarin ajiya bai fara aiki mai ban mamaki ba idan ya rasa tashoshin sadarwa na ɗan lokaci tsakanin tsarin ajiya guda biyu sannan ya sake bayyana.
Don haka. Muna cire haɗin wayoyi tsakanin tsarin ajiya (bari mu yi tunanin cewa an tona su ta hanyar tono).
A Primary mun ga cewa babu alaka da Sakandare.
A Sakandare mun ga cewa babu alaka da Primary.
Komai yana aiki lafiya, kuma muna ci gaba da rubuta bayanai zuwa babban tsarin ajiya, wato, an ba da tabbacin sun bambanta da na madadin, wato, sun “rabu”.
A cikin 'yan mintoci kaɗan muna "gyara" tashar sadarwa. Da zaran tsarin ajiya sun ga juna, ana aiki tare da bayanai ta atomatik. Babu wani abu da ake buƙata daga mai gudanarwa anan.
Bayan wani lokaci, ana gama aiki tare.
An dawo da haɗin kai, asarar tashoshi na sadarwa bai haifar da wani yanayi na gaggawa ba, kuma bayan kunnawa, aiki tare ya faru ta atomatik.
binciken
Mun yi nazarin ka'idar - abin da ake bukata da kuma dalilin da ya sa, ina ribobi da fursunoni. Sa'an nan kuma mu saita kwafi na aiki tare tsakanin tsarin ajiya guda biyu.
Bayan haka, an gudanar da gwaje-gwaje na asali don sauyawa na yau da kullun, gazawar cibiyar bayanai da gazawar tashar sadarwa. A duk lokuta, tsarin ajiya yayi aiki da kyau. Babu asarar bayanai kuma ana kiyaye ayyukan gudanarwa ga mafi ƙanƙanta don yanayin labari.
Lokaci na gaba za mu rikitar da halin da ake ciki kuma mu nuna yadda duk wannan dabaru ke aiki a cikin metrocluster mai sarrafa kansa a cikin yanayin aiki mai aiki, wato, lokacin da tsarin ajiyar duka biyu suka kasance na farko, kuma yanayin yanayin gazawar tsarin ajiya yana sarrafa kansa sosai.
Da fatan za a rubuta sharhi, za mu yi farin ciki da samun kyakkyawar suka da shawarwari masu amfani.
Sai lokaci na gaba.
source: www.habr.com