- Imemori ye-NAND (V-NAND) ebekwe ngokuvundlile ekhulisa ubuningi kanye nokusebenza ngaphandle kokunciphisa usayizi weseli.
- Inciphisa ukuphazamiseka futhi ithuthukisa isivinini kanye nokusebenza kahle kwamandla ngenxa yesakhiwo sayo esinezingqimba kanye nokuphathwa okungcono komthwalo.
- I-SLC/MLC/TLC/QLC ichaza ama-bits ngeseli ngayinye: ama-bits amaningi andisa umthamo futhi anciphise izindleko, kodwa anciphisa ukuqina nokusebenza.
- Ukuthuthuka kuya ezingqimbeni eziningi kanye namasu e-ECC angcono kuzovumela ama-SSD anamandla aphezulu anesikhathi eside sokuphila ngezindleko ezingabizi kakhulu.
Ezweni lesitoreji sedijithali, ubuchwepheshe bulokhu buthuthuka ukuze bunikeze amandla amakhulu kanye nokusebenza okungcono. Enye yentuthuko ebaluleke kakhulu kulo mkhakha yi -3D NAND flash memory , eye yaguqula imakethe ye-SSD kanye namanye amadivayisi okugcina.
Lesi sihloko sihlola ukuthi iyini inkumbulo ye-3D NAND, ukuthi isebenza kanjani, ukuthi kungani ingcono kune-NAND yendabuko, kanye nezinzuzo zayo eziyinhloko kanye nokungalungi kwayo. Sizohlola nomehluko phakathi kwezinhlobo ezahlukene ze-NAND kanye nomthelela wazo ekusebenzeni nasekuphileni isikhathi eside kwamadivayisi okugcina.
Iyini inkumbulo ye-3D NAND?
Imemori ye-flash ye-3D NAND iwukuvela kwememori ye-flash ye-NAND evamile, lapho amaseli ememori ebekwa khona ngokuqondile ngezendlalelo eziningi esikhundleni sokuhleleka endaweni enezinhlangothi ezimbili. Lo mklamo uvumela ubuningi besitoreji kanye nokusebenza okuthuthukisiwe ngaphandle kokunciphisa usayizi wamaseli ememori, okuyisici esibalulekile ekudeni kwesikhathi eside kwamadivayisi okugcina.
Lolu hlobo lwememori lubizwa nangokuthi i-V-NAND (Vertical NAND) ngenxa yesakhiwo sayo esihlanganisiwe, esinikeza ukusebenza kahle kwamandla okukhulu kanye nezikhathi zokufunda/zokubhala ezisheshayo uma kuqhathaniswa nememori ye-NAND evamile.
Isebenza kanjani inkumbulo ye-3D NAND
Inkumbulo ye-3D NAND ilandela izimiso eziyisisekelo zememori ye-flash evamile, isebenzisa ama-transistors wamasango antantayo ukuze agcine idatha esesimweni samashaji kagesi. Nokho, ngokungafani ne-Planer NAND, i-3D NAND ihlela amaseli ngefomethi estakiwe, enciphisa izinkinga zokuphazamiseka futhi ithuthukise ukwethembeka kwesikhathi eside.
Inqubo yokuhlela nokusula idatha kuseli ye-NAND flash ihilela ukulawula izimo zama-voltage. Iseli ngalinye lememori liqukethe isango lokulawula kanye nesango elintantayo , elivumela ukugcina nokugcina amashaja kagesi ngaphandle kokudinga ukunikezwa kwamandla okuqhubekayo.
Izinhlobo zenkumbulo ye-NAND kanye nokwehluka kwazo
Ngaphakathi kobuchwepheshe bememori ye-flash ye-NAND, kunezinhlobo ezahlukene zokuhlukaniswa kuye ngenani lama-bits iseli ngalinye elingawagcina. Lokhu kuthinta ukusebenza , ukuqina , kanye nezindleko zokukhiqiza zamadivayisi.
- I-SLC (Iseli Yezinga Elilodwa): Igcina ibhithi elilodwa ngeseli, ihlinzeka ngokuqina okukhulu nesivinini. Kuyinketho ebiza kakhulu futhi isetshenziswa ezindaweni zezimboni neseva lapho ukuthembeka kuyisihluthulelo.
- I-MLC (Multi Level Cell): Ingakwazi ukugcina amabhithi amabili ngeseli ngayinye, okunciphisa izindleko zayo futhi ikhulise umthamo wokulondoloza, nakuba ngezindleko zokuphila nokusebenza okuthile.
- I-TLC (Triple Level Cell): Ihlanganisa amabhithi amathathu kuseli ngayinye, okuvumela ukukhiqizwa kwamayunithi ashibhile anamandla amakhulu, kodwa anempilo ewusizo emfushane.
- I-QLC (Quad Level Cell): Ingagcina amabhithi amane ngeseli ngayinye, okukhulisa ukuminyana kwesitoreji kodwa futhi yehlise ukusebenza kwayo nokuqina.
Njengoba sandisa inani lama-bits ngeseli ngayinye, i-NAND iba ngcono kakhulu futhi isivumela ukuthi sakhe amadivayisi anomthamo ophezulu, kodwa anokumelana okuncane nokuguguleka kanye nesivinini sokufinyelela esihamba kancane.
Izinzuzo zememori ye-3D NAND
Ukwethulwa kobuchwepheshe be -3D NAND kumele intuthuko enkulu maqondana nomthamo, ukusebenza, kanye nokuqina. Ezinye zezinzuzo zayo eziyinhloko zifaka:
- Ukuminyana kwesitoreji okuphezulu: Ngokupakisha amaseli ngokuqondile, umthamo ungandiswa ngaphandle kokunciphisa usayizi wawo.
- Ukusebenza kangcono: Ibanga phakathi kwamaseli likhulu, elinciphisa ukuphazamiseka futhi lithuthukise isivinini sokufunda/sokubhala.
- Ukusebenza kahle kwamandla aphezulu: Ukusetshenziswa kwamandla kuncishisiwe uma kuqhathaniswa ne-NAND enezinhlangothi ezimbili, enenzuzo kumadivayisi aphathekayo.
- impilo yeshelufu ende: Ukuphazamiseka okuncane kanye nokusabalalisa okungcono kweshaja kagesi kukhulisa ukumelana neseli.
Ukungalungi kwenkumbulo ye-3D NAND
Nakuba i-3D NAND inikeza izinzuzo eziningi, inezinkinga ezithile ezingathinta ukusebenza kwayo kumadivayisi athile:
- Izindleko zokukhiqiza eziphezulu: Ukukhiqizwa kwe-chip I-3D NAND Iyinkimbinkimbi kakhulu futhi idinga izinqubo ezithuthukisiwe, okwandisa intengo yayo.
- Ukuvumelana phakathi kwamandla nokuqina: Njengoba inani lamabhithi ngeseli likhuphuka (i-TLC ne-QLC), ukuphila isikhathi eside nokusebenza kungase kwehliswe.
Ukuvela kwenkumbulo ye-NAND nekusasa layo
Eminyakeni edlule, i-3D NAND ishintshe kusukela kumadivayisi anezingqimba ezingu-24 kuya kuma-chip anezingqimba ezingaphezu kuka-160 ezisathuthukiswa njengamanje. Lo mkhuba uzovula ithuba lokukhiqiza ama-SSD anamakhono aphezulu kakhulu ngaphandle kokukhulisa izindleko ngokushesha.
Ngaphezu kwalokho, ngokuthuthukiswa kwamasu amasha okulungisa amaphutha kanye nokwenza ngcono ukufunda/ukubhala , abakhiqizi bandisa isikhathi eside sala madivayisi, okuvumela ukusetshenziswa kwezinkumbulo ze-TLC noma ze-QLC ngokusebenza okufana nokwezizukulwane zangaphambilini.
Ukuncintisana phakathi kwezinkampani ezifana ne-Samsung, i-Micron, i-SK Hynix, ne-Kioxia kuqhuba ukuthuthukiswa kwezixazululo ezisebenza kahle nezingabizi kakhulu, okuqinisekisa ukuthi imemori ye-3D NAND iyaqhubeka nokudlala indima ebalulekile esikhathini esizayo sokugcina idatha yedijithali.
Ukuthuthuka kwememori ye -3D NAND kuye kwavumela ukwanda komthamo wesitoreji ngenkathi kugcinwa ukusebenza okuhle kakhulu. Ngokufaka amaseli ezingqimbeni eziningi, lobu buchwepheshe bufinyelela ubuningi kanye nokusebenza kahle okukhulu uma kuqhathaniswa ne -NAND yendabuko . Naphezu kwezindleko zayo eziphezulu zokukhiqiza, i-3D NAND isibe ukukhetha okuthandwayo kwama -SSD anamuhla , ama-smartphone, namanye amadivayisi okugcina, okunikeza inhlanganisela yesivinini, umthamo, kanye nokuthembeka okungakaze kubonwe ngaphambili.
