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Pambuyo pa tchuthi cha Chaka Chatsopano, tinayambitsanso mtambo woteteza masoka kutengera malo awiri. Lero tikuwuzani momwe zimagwirira ntchito ndikuwonetsa zomwe zimachitika kwa makina opangira makasitomala pamene zinthu zamagulu zimalephera ndipo malo onse akuphwanyidwa (wowononga - zonse zili bwino nawo).
Makina osungira mitambo otetezedwa ndi masoka pa tsamba la OST.
Zomwe zili mkati
Pansi pa hood, gululi lili ndi ma seva a Cisco UCS okhala ndi VMware ESXi hypervisor, makina awiri osungira a INFINIDAT InfiniBox F2240, zida za netiweki za Cisco Nexus, komanso ma switch a Brocade SAN. Gululi limagawidwa m'magawo awiri - OST ndi NORD, mwachitsanzo, malo aliwonse a data ali ndi zida zofanana. M'malo mwake, izi ndizomwe zimapangitsa kuti izi zisakhale zowopsa.
Patsamba limodzi, zinthu zazikulu zimabwerezedwanso (makamu, ma switch a SAN, ma network).
Masamba awiriwa amalumikizidwa ndi njira zodzipatulira za fiber optic, zosungidwanso.
Mawu ochepa okhudza machitidwe osungira. Tidapanga mtundu woyamba wamtambo wosateteza masoka pa NetApp. Apa tidasankha INFINIDAT, ndipo chifukwa chake:
- Njira yobwereza yokhazikika. Zimalola makina enieni kuti apitirizebe kugwira ntchito ngakhale ngati imodzi mwazosungirako ikulephera kwathunthu. Ndikuuzani zambiri za kubwereza pambuyo pake.
- Olamulira atatu a disk kuti awonjezere kulolerana kwadongosolo. Nthawi zambiri amakhala awiri.
- Okonzeka yankho. Tinalandira rack yokonzedweratu yomwe imangofunika kulumikizidwa ndi netiweki ndikukonzedwa.
- Thandizo losamala laukadaulo. Akatswiri a INFINIDAT amasanthula nthawi zonse zipika ndi zochitika zosungirako, kukhazikitsa mitundu yatsopano ya firmware, ndikuthandizira kukonza.
Nazi zina mwazithunzi kuchokera pakuchotsa:
Momwe ikugwirira ntchito
Mtambo uli kale wololera zolakwika mkati mwawokha. Zimateteza kasitomala ku zovuta za hardware imodzi ndi mapulogalamu. Zosagonjetsedwa ndi masoka zithandizira kuteteza ku zolephera zazikulu mkati mwa tsamba limodzi: mwachitsanzo, kulephera kwa makina osungira (kapena gulu la SDS, lomwe limachitika nthawi zambiri π), zolakwika zazikulu pamaneti osungira, ndi zina zambiri. Chabwino, komanso chofunika kwambiri: mtambo woterewu umateteza pamene malo onse sakupezeka chifukwa cha moto, kuzimitsidwa, kulanda zigawenga, kapena kutera kwachilendo.
Pazochitika zonsezi, makina a kasitomala amapitilirabe kugwira ntchito, chifukwa chake.
Mapangidwe a tsango adapangidwa kuti aliyense wa ESXi yemwe ali ndi makina amakasitomala azitha kupeza chilichonse mwazinthu ziwiri zosungira. Ngati makina osungira pa malo a OST akulephera, makina enieni adzapitirizabe kugwira ntchito: makamu omwe akugwira nawo ntchito adzapeza malo osungirako pa NORD kwa deta.
Izi ndi momwe chithunzi cholumikizira mumagulu chimawonekera.
Izi ndizotheka chifukwa chakuti Inter-Switch Link imakonzedwa pakati pa nsalu za SAN za malo awiriwa: Fabric A OST SAN switch imagwirizanitsidwa ndi Fabric A NORD SAN switch, komanso mofanana ndi Fabric B SAN switches.
Chabwino, kotero kuti zovuta zonsezi za mafakitale a SAN zikhale zomveka, Kubwereza kwa Active-Active kumakonzedwa pakati pa machitidwe awiri osungira: zambiri zimalembedwa nthawi imodzi ku makina osungirako ndi akutali, RPO = 0. Zikuoneka kuti deta yoyambirira imasungidwa pamalo amodzi osungira, ndipo chofanana chake chimasungidwa kwina. Deta imabwerezedwa pamlingo wosungirako, ndipo data ya VM (ma disks ake, fayilo yosinthira, fayilo yosinthira, ndi zina) imasungidwa pa iwo.
The ESXi khamu amaona voliyumu chachikulu ndi chofanana ake ngati litayamba chipangizo (Storage Chipangizo). Pali 24 njira kuchokera ESXi khamu kuti aliyense litayamba chipangizo:
Njira za 12 zimagwirizanitsa ndi njira yosungiramo malo (njira zabwino kwambiri), ndi 12 yotsala kumalo osungirako akutali (njira zosayenerera). Munthawi yanthawi zonse, ESXi imapeza data pamakina osungirako komweko pogwiritsa ntchito njira "zabwino". Dongosolo losungirali likalephera, ESXi imataya njira zabwino kwambiri ndikusinthira ku "zabwino kwambiri". Izi ndi momwe zimawonekera pachithunzichi.
Dongosolo la gulu loteteza masoka.
Ma network onse amakasitomala amalumikizidwa kumasamba onsewo kudzera pansalu yofanana ya netiweki. Tsamba lililonse limayendetsa Provider Edge (PE), pomwe ma network a kasitomala amathetsedwa. Ma PE amalumikizidwa kukhala gulu lofanana. Ngati PE ikulephera pamalo amodzi, magalimoto onse amatumizidwa kumalo achiwiri. Chifukwa cha izi, makina enieni ochokera patsamba losiyidwa opanda PE amakhalabe opezeka pa intaneti kwa kasitomala.
Tiyeni tsopano tiwone zomwe zidzachitike kwa makina a kasitomala pafupifupi zolephera zosiyanasiyana. Tiyeni tiyambe ndi zosankha zopepuka kwambiri ndikumaliza ndizovuta kwambiri - kulephera kwa tsamba lonse. M'zitsanzo, nsanja yayikulu idzakhala OST, ndipo nsanja yosunga zobwezeretsera, yokhala ndi ma data, idzakhala NORD.
Kodi chimachitika ndi chiyani pamakina a kasitomala ngati ...
Replication Link yalephera. Kufanana pakati pa machitidwe osungira a malo awiriwa amaima.
ESXi imangogwira ntchito ndi zida zam'deralo za disk (kudzera njira zabwino kwambiri).
Makina a Virtual akupitiliza kugwira ntchito.
ISL (Inter-Switch Link) imasweka. Mlanduwu ndi wokayikitsa. Pokhapokha ngati wofukula wamisala akukumba njira zingapo nthawi imodzi, zomwe zimayenda panjira zodziyimira pawokha ndikubweretsedwa kumasamba kudzera pazolowera zosiyanasiyana. Koma mulimonse. Pankhaniyi, makamu ESXi kutaya theka la njira ndipo akhoza kupeza kachitidwe yosungirako kwawoko. Zofananira zimasonkhanitsidwa, koma olandira sadzatha kuzipeza.
Makina a Virtual akugwira ntchito bwino.
Kusintha kwa SAN kulephera pa amodzi mwamasamba. ESXi makamu kutaya ena mwa njira zosungirako. Pankhaniyi, makamu pa malo kumene lophimba analephera ntchito kokha mwa HBAs awo.
Makina owoneka bwino akupitilizabe kugwira ntchito moyenera.
Kusintha konse kwa SAN pa tsamba limodzi kumalephera. Tinene kuti tsoka loterolo lidachitika patsamba la OST. Pankhaniyi, makamu ESXi pa malo adzataya njira zonse litayamba zipangizo zawo. Makina okhazikika a VMware vSphere HA ayamba kugwira ntchito: iyambitsanso makina onse a tsamba la OST ku NORD pakadutsa masekondi 140.
Makina owoneka bwino omwe akuyendetsa pamasamba a NORD akugwira ntchito bwino.
The ESXi khamu akulephera pa malo amodzi. Apa makina a vSphere HA amagwiranso ntchito: makina enieni ochokera kwa omwe adalephera amayambiranso pa makamu ena - patsamba lomwelo kapena lakutali. Nthawi yoyambitsanso makina ndi mphindi imodzi.
Ngati makamu onse a ESXi pa tsamba la OST alephera, palibe zosankha: ma VM amayambiranso pa ina. Nthawi yoyambitsanso ndiyofanana.
Dongosolo losungirako limalephera pamalo amodzi. Tiyerekeze kuti dongosolo losungirako likulephera pa tsamba la OST. Ndiye makamu a ESXi a malo a OST akusintha kuti agwire ntchito ndi zojambula zosungirako ku NORD. Makina osungira akalephera kubwereranso kuntchito, kubwereza kokakamiza kudzachitika ndipo makamu a ESXi OST ayambanso kupeza makina osungirako.
Makina owoneka bwino akhala akugwira ntchito nthawi yonseyi.
Imodzi mwamasamba ikulephera. Pamenepa, makina onse enieni adzayambiranso pa malo osungiramo zosungirako kudzera mu makina a vSphere HA. Nthawi yoyambitsanso VM ndi masekondi 140. Pankhaniyi, zoikamo zonse maukonde a makina pafupifupi adzapulumutsidwa, ndipo amakhalabe kupezeka kwa kasitomala pa netiweki.
Kuonetsetsa kuti kuyambiranso kwa makina pamalo osungirako kumayenda bwino, tsamba lililonse limakhala lodzaza theka. Theka lachiwiri ndi losungirako ngati makina onse enieni achoka pamalo achiwiri, owonongeka.
Mtambo wosamva masoka wozikidwa pazida ziwiri zama data umateteza ku zolephera zotere.
Zosangalatsa izi sizotsika mtengo, chifukwa, kuwonjezera pa zinthu zazikuluzikulu, malo osungira amafunika pa tsamba lachiwiri. Chifukwa chake, mautumiki ofunikira pabizinesi amayikidwa mumtambo wotere, kutsika kwanthawi yayitali komwe kumayambitsa kutayika kwakukulu kwachuma komanso mbiri, kapena ngati chidziwitsocho chili ndi zofunikira zothana ndi masoka kuchokera kwa owongolera kapena malamulo amakampani amkati.
Zotsatira:
Source: www.habr.com