I-LAN kanye ne-SAN zimelela iNethiwekhi Yendawo Yendawo kanye neNethiwekhi Yendawo Yokugcina Izinto ngokulandelana, futhi zombili ziyizinhlelo zokuxhumana zesitoreji eziyinhloko ezisetshenziswa kabanzi namuhla.
I-LAN iqoqo lamakhompyutha nezinto ezisetshenziswayo ezihlanganyela isixhumanisi sokuxhumana esinezintambo noma esingenantambo kumaseva atholakala ezindaweni ezahlukene zezwe. I-SAN kunethiwekhi, ngakolunye uhlangothi, inikeza ukuxhumana okusheshayo futhi yenzelwe amanethiwekhi azimele, okuvumela ukuxhumana okungenamthungo kwamaseva amaningi namadivayisi ahlukahlukene okugcina abiwe.
Ngakho-ke, izingxenye ezimbili ezibalulekile ezisetshenziswa kunethiwekhi yekhompyutha yizinkinobho ze-LAN kanye nezinkinobho ze-SAN. Nakuba izinkinobho ze-LAN kanye nezinkinobho ze-SAN zombili ziyiziteshi zokuxhumana kwedatha, zinomehluko othile, ngakho ake sibheke ngezansi.
1 Kuyini ukushintsha kwe-LAN?
Ukushintsha i-LAN kuyindlela yokushintsha iphakethe esetshenziselwa ukudlulisa amaphakethe phakathi kwamakhompyutha ku-LAN ngaphakathi kwenethiwekhi yendawo. Le ndlela idlala indima ebalulekile ekwakhiweni kwenethiwekhi futhi ingathuthukisa kakhulu ukusebenza kahle kwe-LAN futhi inciphise imikhawulo ye-bandwidth. Kunezinhlobo ezine zokushintsha i-LAN:
Ukushintsha i-MLS ngezingqimba eziningi;
Ukushintsha kwesendlalelo sesi-4;
Ukushintsha kwesendlalelo 3;
Ukushintsha kwesendlalelo sesi-2.
Isebenza kanjani i-LAN switch?
Iswishi ye-LAN iyiswishi ye-Ethernet esebenza ngokusekelwe kuphrothokholi ye-IP futhi inikeza ukuxhumana okuguquguqukayo phakathi kwabathumeli nabamukeli ngenethiwekhi exhunyiwe yamachweba nezixhumanisi. Leli lungiselelo livumela inani elikhulu labasebenzisi bokugcina ukuthi babelane ngezinsiza zenethiwekhi. Amaswishi e-LAN asebenza njengezishintshi zephakethe futhi angaphatha ukudluliswa kwedatha okuningi ngasikhathi sinye. Lokhu bakwenza ngokuhlola ikheli lendawo yohlaka lwedatha ngalunye bese beluqondisa ngokushesha echwebeni elithile elihlobene nedivayisi yokwamukela ehlosiwe.
Indima eyinhloko yeswishi ye-LAN ukugcwalisa izidingo zeqembu labasebenzisi ukuze bakwazi ukufinyelela ndawonye izinsiza ezabiwe futhi baxhumane kalula. Ngokusebenzisa amakhono eswishi ye-LAN, ingxenye enkulu yethrafikhi yenethiwekhi ingatholakala ezigabeni ze-LAN ezincane kakhulu. Lokhu kuhlukaniswa kunciphisa ngempumelelo ukuminyana kwe-LAN iyonke, okuholela ekudlulisweni kwedatha okubushelelezi kanye nokusebenza kwenethiwekhi.
2 Kuyini ukushintsha kwe-SAN?
Ukushintsha i-SAN Network Yendawo Yokugcina kuyindlela ekhethekile yokudala ukuxhumana phakathi kwamaseva namachibi okugcina abiwe ngenhloso yodwa yokwenza kube lula ukudluliselwa kwedatha ehlobene nesitoreji.
Ngamaswishi e-SAN, kungenzeka ukudala amanethiwekhi okugcina amakhulu, asheshayo axhumanisa amaseva amaningi futhi afinyelele inani elikhulu ledatha, ngokuvamile afinyelela ama-petabytes. Ekusebenzeni kwawo okuyisisekelo, amaswishi e-SAN axhumanisa ngempumelelo ithrafikhi phakathi kwamaseva namadivayisi okugcina ngokuhlola amaphakethe nokuwaqondisa ezindaweni zokugcina ezinqunyiwe. Ngokuhamba kwesikhathi, amaswishi okugcina indawo yenethiwekhi ashintshele ekufakeni izici ezithuthukisiwe ezifana nokuphindaphindeka kwendlela, ukuxilongwa kwenethiwekhi, kanye nokuzwa kwe-bandwidth okuzenzakalelayo.
Zisebenza kanjani izishintshi ze-Fibre Channel?
Iswishi ye-Fibre Channel iyisici esibalulekile kunethiwekhi yendawo yokugcina isitoreji i-SAN esiza ukudlulisa idatha kahle phakathi kwamaseva namadivayisi okugcina. Iswishi isebenza ngokudala inethiwekhi yangasese esheshayo eyenzelwe ukugcinwa nokubuyiswa kwedatha.
Emongweni wayo, ukushintsha kwe-Fibre Channel kuncike kuhadiwe nesofthiwe ekhethekile ukuphatha nokuqondisa ithrafikhi yedatha. Isebenzisa iphrothokholi ye-Fibre Channel, iphrothokholi yokuxhumana eqinile nethembekile eyenzelwe izindawo ze-SAN. Njengoba idatha ithunyelwa kusuka kuseva iye kudivayisi yokugcina kanye nokuphikisanayo, ifakwa kumafreyimu e-Fibre Channel, okuqinisekisa ubuqotho bedatha kanye nokudluliswa kwesivinini esikhulu.
I-SAN switch isebenza njengephoyisa lomgwaqo futhi inquma indlela engcono kakhulu yokuthi idatha ihambe nge-SAN. Ihlola amakheli omthombo kanye nendawo oya kuyo kumafreyimu e-Fibre Channel ukuze kuqondiswe kahle amaphakethe. Lokhu kuqondisa okuhlakaniphile kunciphisa ukubambezeleka kanye nokuxinana, kuqinisekisa ukuthi idatha ifika endaweni yayo ngokushesha nangokuthembekile.
Empeleni, izinkinobho ze-Fibre Channel zihlela ukugeleza kwedatha ku-SAN, zithuthukise ukusebenza kanye nokuthembeka ezindaweni ezidinga idatha eningi.
3 Bahluke kanjani?
Ukuqhathanisa iswishi ye-LAN neswishi ye-SAN kungacatshangwa njengokuqhathanisa iswishi ye-SAN neswishi yenethiwekhi, noma iswishi ye-Fibre Channel neswishi ye-Ethernet. Ake sibheke umehluko omkhulu phakathi kweswishi ye-LAN neswishi ye-SAN.
Umehluko Wohlelo Lokusebenza
Ama-switch e-LAN ekuqaleni ayeklanyelwe i-token ring kanye namanethiwekhi e-FDDI futhi kamuva athathelwa indawo yi-Ethernet. Ama-switch e-LAN adlala indima ebalulekile ekuthuthukiseni ukusebenza kahle kwama-LAN kanye nokuxazulula ngempumelelo izinselele ze-bandwidth ezikhona. Ama-LAN angaxhumanisa kalula amadivayisi ahlukahlukene afana namaseva wamafayela, amaphrinta, ama-array esitoreji, amadeskithophu, njll., futhi ama-switch e-LAN angaphatha ngempumelelo ithrafikhi phakathi kwalezi zindawo zokugcina ezahlukene.
Futhi i-SAN switch yenzelwe amanethiwekhi asebenza kahle ukuqinisekisa ukubambezeleka okuphansi kanye nokudluliswa kwedatha okungenakulahlekelwa. Yakhelwe ngokucophelela ukuphatha ngempumelelo imithwalo yemisebenzi esindayo, ikakhulukazi kumanethiwekhi e-Fibre Channel asebenza kahle kakhulu. Kungakhathaliseki ukuthi i-Ethernet noma i-Fibre Channel, ama-switch enethiwekhi yendawo yokugcina anikezelwe futhi alungiselelwe ukuphatha ithrafikhi yesitoreji.
Umehluko Wokusebenza
Ngokuvamile, amaswishi e-LAN asebenzisa i-copper kanye ne-fiber interfaces futhi asebenza kumanethiwekhi e-Ethernet asekelwe ku-IP. Ukushintsha kwe-LAN kwe-Layer 2 kunikeza izinzuzo zokudluliswa kwedatha okusheshayo kanye nokubambezeleka okuncane.
Ihamba phambili ngezici ezifana ne-VoIP, i-QoS kanye nokubika kwe-bandwidth. Ama-switch e-Layer 3 LAN anikeza izici ezifanayo nama-router. Ngokuphathelene ne-Layer 4 LAN Switch, iyinguqulo ethuthukisiwe ye-Layer 3 LAN Switch enikeza izinhlelo zokusebenza ezengeziwe njenge-Telnet kanye ne-FTP. Ngaphezu kwalokho, i-LAN Switch isekela amaphrothokholi afaka phakathi kodwa angagcini ku-SNMP, i-DHCP, i-Apple Talk, i-TCP/IP, kanye ne-IPX. Sekukonke, i-LAN Switch iyisisombululo senethiwekhi esingabizi kakhulu, esilula ukusifaka esilungele izidingo zebhizinisi kanye nenethiwekhi ethuthukisiwe.
Amaswishi e-SAN akhela phezu kwesisekelo samanethiwekhi okugcina e-iSCSI, afaka ubuchwepheshe be-Fibre Channel kanye ne-iSCSI. Isici esibaluleke kakhulu ukuthi amaswishi e-SAN anikeza amakhono okugcina aphezulu kuneziswishi ze-LAN. Amaswishi e-Fibre Channel angaba amaswishi e-Ethernet.
Okungcono kakhulu, iswishi ye-SAN esekelwe ku-Ethernet izonikezelwa ekuphatheni ithrafikhi yesitoreji ngaphakathi kwenethiwekhi yendawo yokugcina i-IP, ngaleyo ndlela kuqinisekiswe ukusebenza okubikezelwayo. Futhi, ngokuxhumanisa amaswishi e-SAN, inethiwekhi enkulu ye-SAN ingakhiwa ukuxhuma amaseva amaningi kanye namachweba okugcina.
4 Ngingayikhetha kanjani iswishi efanele?
Uma ucabangela i-LAN vs. SAN, ukukhetha iswishi ye-LAN noma iswishi ye-SAN kuba yinto ebalulekile. Uma izidingo zakho zifaka phakathi izinqubo zokwabelana ngamafayela ezifana ne-IPX noma i-AppleTalk, khona-ke iswishi ye-LAN esekelwe ku-IP iyindlela engcono kakhulu yedivayisi yokugcina. Ngokuphambene nalokho, uma udinga iswishi ukuze isekele isitoreji esisekelwe ku-Fibre Channel, kunconywa iswishi yokugcina indawo yenethiwekhi.
Amaswishi e-LAN enza kube lula ukuxhumana ngaphakathi kwe-LAN ngokuxhuma amadivayisi ngaphakathi kwenethiwekhi efanayo.
Ngakolunye uhlangothi, izishintshi ze-Fibre Channel zisetshenziswa kakhulu ukuxhuma amadivayisi okugcina kumaseva ukuze kugcinwe kahle futhi kutholakale idatha. Lezi zishintshi ziyahlukahluka ngezindleko, ukusabalala, i-topology, ukuphepha, kanye nomthamo wokugcina. Ukukhetha phakathi kwazo kuncike ezidingweni ezithile zokusetshenziswa.
Amaswishi e-LAN ashibhile futhi kulula ukuwamisa, kuyilapho amaswishi e-SAN ebiza kakhulu futhi adinga ukucushwa okuyinkimbinkimbi kakhulu.
Ngamafuphi, amaswishi e-LAN namaswishi e-SAN ayizinhlobo ezahlukene zamaswishi enethiwekhi, ngalinye lidlala indima ehlukile kunethiwekhi.
Isikhathi sokuthunyelwe: Okthoba-17-2024