I-LAN kunye ne-SAN zimele iNethiwekhi yeNdawo yeNgingqi kunye neNethiwekhi yeNdawo yokugcina izinto, ngokwahlukeneyo, kwaye zombini zezona nkqubo ziphambili zothungelwano lokugcina izinto ezisetyenziswa kakhulu namhlanje.
I-LAN yingqokelela yeekhompyutha kunye nezixhobo ezisetyenziswa kwi-peripherals ezabelana ngekhonkco lonxibelelwano olunentambo okanye olungenazingcingo kwiiseva ezikwiindawo ezahlukeneyo zejografi. Kwelinye icala, i-SAN kwinethiwekhi ibonelela ngonxibelelwano olukhawulezayo kwaye yenzelwe iinethiwekhi zabucala, ivumela unxibelelwano olungenamthungo lweeseva ezininzi kunye nezixhobo ezahlukeneyo zokugcina ezabelwana ngazo.
Ngenxa yoko, izinto ezimbini ezibalulekileyo ezisetyenziswa kwinethiwekhi yekhompyutha ziiswitshi zeLAN kunye neeswitshi zeSAN. Nangona iiswitshi zeLAN kunye neeswitshi zeSAN zombini ziyimijelo yonxibelelwano lwedatha, zinomahluko othile, ngoko makhe sijonge ngezantsi.
1 Yintoni ukutshintsha i-LAN?
Ukutshintsha i-LAN yindlela yokutshintsha iipakethi esetyenziselwa ukudlulisa iipakethi phakathi kweekhompyutha kwi-LAN ngaphakathi kwenethiwekhi yendawo. Le ndlela idlala indima ebalulekileyo kuyilo lwenethiwekhi kwaye inokuphucula kakhulu ukusebenza kakuhle kwe-LAN kwaye inciphise imida ye-bandwidth. Kukho iintlobo ezine zokutshintsha i-LAN:
Ukutshintsha i-MLS ngeendlela ezininzi;
Ukutshintsha kweleya yesi-4;
Ukutshintsha kweLayer 3;
Ukutshintsha kweleya yesi-2.
Isebenza njani iswitshi yeLAN?
Iswitshi yeLAN yiswitshi ye-Ethernet esebenza ngokusekelwe kwiprotokholi ye-IP kwaye ibonelela ngonxibelelwano oluguquguqukayo phakathi kwabathumeli kunye nabamkeli ngenethiwekhi edibeneyo yeeports kunye neelinks. Olu lungiselelo luvumela inani elikhulu labasebenzisi bokugqibela ukuba babelane ngezixhobo zenethiwekhi. Iiswitshi zeLAN zisebenza njengeepakethi kwaye zinokuphatha uthumelo lwedatha oluninzi ngaxeshanye. Zikwenza oku ngokuhlola idilesi yendawo ekuyiwa kuyo yesakhelo ngasinye sedatha kwaye ziyiqondise kwangoko kwizibuko elithile elinxulumene nesixhobo esicetywayo sokwamkela.
Indima ephambili yeswitshi yeLAN kukuzalisekisa iimfuno zeqela labasebenzisi ukuze bakwazi ukufikelela kwizixhobo ezabelwana ngazo kunye nokunxibelelana ngokungenamthungo. Ngokusebenzisa amandla eswitshi yeLAN, inxalenye enkulu yetrafikhi yenethiwekhi inokufumaneka kwiindawo zeLAN ezincinci. Olu hluhlu lunciphisa ngempumelelo ukuxinana kweLAN iyonke, nto leyo ekhokelela ekudlulisweni kwedatha kunye nokusebenza kwenethiwekhi okubushelelezi.
2 Yintoni i-SAN switching?
Ukutshintsha i-SAN Network yeNdawo yokugcina izinto yindlela ekhethekileyo yokwenza unxibelelwano phakathi kweeseva kunye namachibi okugcina izinto abiweyo ngenjongo yodwa yokwenza kube lula ukudluliselwa kwedatha enxulumene nokugcina izinto.
Ngee-SAN switches, kunokwenzeka ukudala iinethiwekhi ezinkulu, ezikhawulezayo zokugcina ezidibanisa iiseva ezininzi kwaye zifikelele kumanani amakhulu edatha, zihlala zifikelela kwi-petabytes. Kwimisebenzi yazo esisiseko, ii-SAN switches zilungelelanisa ngempumelelo ithrafikhi phakathi kweeseva kunye nezixhobo zokugcina ngokuhlola iipakethi kunye nokuziqondisa kwiindawo zokugqibela ezimiselweyo. Ngokuhamba kwexesha, ii-network area storage switches ziye zavela ukuze zibandakanye iimpawu eziphambili ezifana nokuphindaphinda kwendlela, ukuxilongwa kwenethiwekhi, kunye nokuva nge-bandwidth ngokuzenzekelayo.
Zisebenza njani iiswitshi zeFibre Channel?
Iswitshi yeFibre Channel yinxalenye ebalulekileyo kwinethiwekhi yendawo yokugcina idatha iSAN enceda ekudluliseni idatha ngokufanelekileyo phakathi kweeseva kunye nezixhobo zokugcina idatha. Iswitshi isebenza ngokudala inethiwekhi yabucala ekhawulezayo eyenzelwe ukugcina idatha kunye nokuyibuyisa.
Eyona nto iphambili, iswitshi yeFibre Channel ixhomekeke kwihardware kunye nesoftware ekhethekileyo ukulawula nokulawula ithrafikhi yedatha. Isebenzisa iprotocol yeFibre Channel, iprotocol yonxibelelwano eqinileyo nethembekileyo eyenzelwe iimeko zeSAN. Njengoko idatha ithunyelwa ukusuka kwiseva ukuya kwisixhobo sokugcina idatha kwaye ngokuchaseneyo, ifakwa kwiifreyimu zeFibre Channel, ukuqinisekisa ukuthembeka kwedatha kunye nokudluliselwa kwesantya esiphezulu.
Iswitshi yeSAN isebenza njengepolisi yendlela kwaye imisela eyona ndlela ilungileyo yokuba idatha ihambe ngayo kwiSAN. Ihlola idilesi yomthombo kunye nendawo ekuyiwa kuyo kwiifreyimu zeFibre Channel ukuze kuhanjiswe iipakethi ngendlela efanelekileyo. Le ndlela ihlakaniphileyo inciphisa ukubambezeleka kunye nokuxinana, iqinisekisa ukuba idatha ifikelela kwindawo ekuyiwa kuyo ngokukhawuleza nangokuthembekileyo.
Ngokwenyani, iiswitshi zeFibre Channel zilungelelanisa ukuhamba kwedatha kwiSAN, ziphucula ukusebenza kunye nokuthembeka kwiindawo ezisebenzisa idatha eninzi.
3 Bahluke njani?
Ukuthelekisa iswitshi yeLAN kwiswitshi yeSAN kunokucingelwa njengokuthelekisa iswitshi yeSAN kwiswitshi yenethiwekhi, okanye iswitshi yeFibre Channel kwiswitshi yeEthernet. Makhe sijonge umahluko ophambili phakathi kweswitshi yeLAN kunye neswitshi yeSAN.
Umahluko kwiSicelo
Iiswitshi zeLAN ekuqaleni zaziyilelwe i-token ring kunye neenethiwekhi ze-FDDI kwaye kamva zatshintshwa yi-Ethernet. Iiswitshi zeLAN zidlala indima ebalulekileyo ekuphuculeni ukusebenza kakuhle kweeLAN kunye nokusombulula ngempumelelo imingeni ye-bandwidth ekhoyo. IiLAN zinokuqhagamshela ngaphandle komthungo izixhobo ezahlukeneyo ezifana neeseva zefayile, iiprinta, ii-array zokugcina, iidesktops, njl.njl., kwaye iiswitshi zeLAN zinokulawula ngempumelelo ithrafikhi phakathi kwezi ndawo zokugqibela ezahlukeneyo.
Kwaye iswitshi yeSAN yenzelwe iinethiwekhi ezisebenza kakhulu ukuqinisekisa ukuba idatha ayisebenzi kakuhle kwaye ayilahleki. Yenzelwe ngononophelo ukulawula ngokufanelekileyo imithwalo enzima yentengiselwano, ingakumbi kwiinethiwekhi zeFibre Channel ezisebenza kakhulu. Nokuba yiEthernet okanye yiFibre Channel, iiswitshi zenethiwekhi yendawo yokugcina zinikezelwe kwaye zilungiselelwe ukuphatha ithrafikhi yokugcina.
Umahluko ekusebenzeni
Ngokwesiqhelo, ii-LAN switches zisebenzisa i-copper kunye ne-fiber interfaces kwaye zisebenza kwiinethiwekhi ze-Ethernet ezisekelwe kwi-IP. Ukutshintsha kwe-LAN yeLayer 2 kunika iingenelo zokudluliselwa kwedatha ngokukhawuleza kunye nokubambezeleka okuncinci.
Igqwesile kwiimpawu ezifana neVoIP, iQoS kunye nengxelo ye-bandwidth. Iiswitshi zeLayer 3 LAN zibonelela ngeempawu ezifanayo njengee-routers. Ngokuphathelele iLayer 4 LAN Switch, yinguqulelo ephucukileyo yeLayer 3 LAN Switch enikezela ngezicelo ezongezelelweyo ezifana neTelnet kunye neFTP. Ukongeza, iLAN Switch ixhasa iiprotocol ezibandakanya kodwa zingaphelelanga kwi-SNMP, iDHCP, iApple Talk, iTCP/IP, kunye ne-IPX. Lilonke, iLAN Switch sisisombululo senethiwekhi esingabizi kakhulu, esilula ukusithumela esifanelekileyo kwiimfuno zeshishini kunye nenethiwekhi eziphambili.
Iiswitshi ze-SAN zakhelwe phezu kwesiseko seenethiwekhi zokugcina i-iSCSI, ezibandakanya ubuchwepheshe be-Fibre Channel kunye ne-iSCSI. Eyona nto ibalulekileyo kukuba iiswitshi ze-SAN zibonelela ngezakhono zokugcina ezingcono kuneeswitshi ze-LAN. Iiswitshi ze-Fibre Channel nazo zingaba ziiswitshi ze-Ethernet.
Ngokufanelekileyo, iswitshi ye-SAN esekelwe kwi-Ethernet iya kunikezelwa ekulawuleni ithrafikhi yokugcina ngaphakathi kwenethiwekhi yendawo yokugcina i-IP, ngaloo ndlela iqinisekisa ukusebenza okuqikelelweyo. Kwakhona, ngokuqhagamshela iiswitshi ze-SAN, inethiwekhi enkulu ye-SAN inokwakheka ukuqhagamshela iiseva ezininzi kunye neendawo zokugcina.
4 Ndingayikhetha njani iswitshi efanelekileyo?
Xa ucinga nge-LAN vs. SAN, ukukhetha iswitshi ye-LAN okanye iswitshi ye-SAN kuba yinto ebalulekileyo. Ukuba iimfuno zakho ziquka iiprotokholi zokwabelana ngefayile ezifana ne-IPX okanye i-AppleTalk, ke iswitshi ye-LAN esekelwe kwi-IP lolona khetho lufanelekileyo kwisixhobo sokugcina. Ngokwahlukileyo koko, ukuba ufuna iswitshi yokuxhasa isitoreji esisekelwe kwi-Fibre Channel, kuyacetyiswa iswitshi yokugcina indawo yenethiwekhi.
Iiswitshi zeLAN zenza kube lula unxibelelwano ngaphakathi kweLAN ngokudibanisa izixhobo ngaphakathi kwenethiwekhi efanayo.
Kwelinye icala, iiswitshi zeFibre Channel zisetyenziswa kakhulu ukuqhagamshela izixhobo zokugcina kwiseva ukuze kugcinwe kakuhle kwaye kufunyanwe idatha. Ezi switshi zahlukile ngexabiso, ukwandiswa, i-topology, ukhuseleko, kunye nomthamo wokugcina. Ukukhetha phakathi kwazo kuxhomekeke kwiimfuno ezithile zokusetyenziswa.
Iiswitshi zeLAN azibizi kakhulu kwaye kulula ukuzicwangcisa, ngelixa iiswitshi zeSAN zibiza kakhulu kwaye zifuna uqwalaselo oluntsonkothileyo.
Ngamafutshane, ii-LAN switches kunye nee-SAN switches ziintlobo ezahlukeneyo zee-network switches, nganye idlala indima eyahlukileyo kwi-network.
Ixesha leposi: Oktobha-17-2024