4.2.2. I-RBER kunye neminyaka yediski (ngaphandle kwemijikelezo ye-PE).
Umzobo we-1 ubonisa ukulungelelaniswa okubalulekileyo phakathi kwe-RBER kunye nobudala, okuyinani leenyanga idisk ekhoyo kwintsimi. Nangona kunjalo, oku kunokuba lulungelelwaniso olungeyonyani kuba kusenokwenzeka ukuba iidrive ezindala zinee-PE ezininzi kwaye ke i-RBER inxibelelene ngakumbi nemijikelo ye-PE.
Ukuphelisa umphumo weminyaka yobudala ekugqokeni okubangelwa yimijikelezo ye-PE, sahlula zonke iinyanga zenkonzo kwiibhokisi zisebenzisa i-deciles yokusasazwa komjikelezo we-PE njenge-cutoff phakathi kwezikhongozeli, umzekelo, isitya sokuqala siqulethe zonke iinyanga zobomi bedisk ukuya kwi-container. idecile yokuqala yokuhanjiswa komjikelo we-PE, njalo njalo. Siye saqinisekisa ukuba kwisikhongozeli ngasinye unxulumano phakathi kwemijikelo ye-PE kunye ne-RBER luncinci kakhulu (ekubeni isikhongozeli ngasinye sigubungela kuphela uluhlu oluncinci lwemijikelezo ye-PE), kwaye emva koko sibale i-coefficient yokulungelelanisa phakathi kwe-RBER kunye nobudala bedisk ngokwahlukeneyo kwisikhongozeli ngasinye.
Senze olu hlalutyo ngokwahlukileyo kwimodeli nganye kuba naluphi na ulungelelwaniso olujongiwe alukho ngenxa yeyantlukwano phakathi kweemodeli ezincinci nezindala, kodwa ngenxa yeminyaka yeedrives zemodeli efanayo. Siye saqaphela ukuba nangemva kokunciphisa umphumo we-PE cycles ngendlela echazwe ngasentla, kuzo zonke iimodeli zokuqhuba kwakusekho ukulungelelaniswa okubalulekileyo phakathi kwenani leenyanga i-drive ekhoyo kwintsimi kunye ne-RBER yayo (i-coefficients yokudibanisa i-0,2 ukuya kwi-0,4) ).
Irayisi. 3. Ubudlelwane phakathi kwe-RBER kunye nenani lemijikelezo ye-PE kwiidiski ezintsha kunye ezindala zibonisa ukuba ubudala bediski buchaphazela ixabiso le-RBER kungakhathaliseki ukuba yimijikelo ye-PE ebangelwa ukugqoka.
Siphinde sabona umzobo wesiphumo seminyaka yokuqhubela phambili ngokwahlula iintsuku zokusetyenziswa kwedrive "kwiminyaka emncinci" ukuya kuthi ga kunyaka o-1 kunye neentsuku zokusetyenziswa kwedrive ngaphezulu kweminyaka emi-4, emva koko sicwangcise i-RBER nganye. iqela ngokuchasene nenani lemijikelo yePE. Umzobo 3 ubonisa ezi ziphumo kwimodeli ye-MLC-D ye-drive. Sibona umahluko obonakalayo kumaxabiso e-RBER phakathi kwamaqela amadala kunye neediski ezintsha kuyo yonke imijikelo ye-PE.
Ukususela kule nto, sigqiba ukuba ubudala, obulinganiswa neentsuku zokusetyenziswa kwediski kwintsimi, kunempembelelo enkulu kwi-RBER, kungakhathaliseki ukuba imemori yememori igugile ngenxa yokuvezwa kwimijikelezo ye-PE. Oku kuthetha ukuba ezinye izinto, ezifana nokuguga kwe-silicon, zidlala indima enkulu ekunxibeni komzimba wediski.
4.2.3. I-RBER kunye nomthwalo womsebenzi.
Iimpazamo ezincinci kucingelwa ukuba zibangelwa yenye yeendlela ezine:
- iimpazamo zokugcina Iimpazamo zogcino, xa iseli yememori ilahlekelwa yidata ekuhambeni kwexesha
Funda iimpazamo eziphazamisayo, apho umsebenzi wokufunda uyonakalisa imixholo yeseli ekufutshane; - Bhala iimpazamo eziphazamisayo, apho umsebenzi wokufunda uyonakalisa imixholo yeseli ekufutshane;
- Iimpazamo zokucima okungaphelelanga, xa umsebenzi wokucima ungacimi ngokupheleleyo imixholo yeseli.
Iimpazamo zeentlobo ezintathu zokugqibela (ukufunda ukuphazamiseka, ukubhala ukuphazamiseka, ukucinywa okungaphelelanga) kuhambelana nomthwalo womsebenzi, ngoko ukuqonda ukulungelelaniswa phakathi kwe-RBER kunye nomthwalo womsebenzi kusinceda siqonde ukuxhaphaka kweendlela ezahlukeneyo zeempazamo. Kuphononongo lwakutsha nje, "Uphononongo olukhulu lokusilela kwememori ye-flash kwintsimi" (MEZA, J., WU, Q., KUMAR, S., MUTLU, O. "Uphononongo olukhulu lokungaphumeleli kwememori ye-flash kwi intsimi." Kwiinkqubo zeNkomfa yaMazwe ngaMazwe ye-ACM SIGMETRICS yoMlinganiselo kunye neModeli yeeNkqubo zeKhompyutha ka-2015, eNew York, ngo-2015, SIGMETRICS '15, ACM, iphe. zincinci kakhulu.
Umzobo we-1 ubonisa ubudlelwane obubalulekileyo phakathi kwexabiso le-RBER kwinyanga enikiweyo yobomi bedisk kunye nenani lokufunda, ukubhala, kunye nokucima ngenyanga enye kwiimodeli ezithile (umzekelo, i-coefficient yokulungelelanisa ingaphezulu kwe-0,2 ye-MLC - B imodeli kwaye ingaphezulu kwe-0,6 ye-SLC-B). Nangona kunjalo, kunokwenzeka ukuba olu lulungelelwaniso olunganyanisekanga, njengoko umsebenzi wenyanga unokunxulumana netotali yenani lemijikelo ye-PE.
Sisebenzise indlela efanayo echazwe kwiCandelo 4.2.2 ukuhlukanisa imiphumo yomthwalo womsebenzi kwimiphumo ye-PE cycles ngokuhlukanisa iinyanga zokusebenza kwe-drive ngokusekelwe kwimijikelezo yangaphambili ye-PE, kwaye emva koko simisela i-coefficients yokulungelelanisa ngokwahlukileyo kwisitya ngasinye.
Siye sabona ukuba ukulungelelaniswa phakathi kwenani elifundwayo kwinyanga enikiweyo yobomi bedisk kunye nexabiso le-RBER kuloo nyanga liqhubekile kwiimodeli ze-MLC-B kunye ne-SLC-B, nangona ukukhawulela imijikelezo ye-PE. Siphinde saphinda kwakhona uhlalutyo olufanayo apho singabandakanyi umphumo wokufunda kwinani lokubhala kunye nokucima okufanayo, kwaye sagqiba ukuba ulungelelwaniso phakathi kwe-RBER kunye nenani lokufundwa luyinyani kwimodeli ye-SLC-B.
Umzobo we-1 ubonisa ulungelelwaniso phakathi kwe-RBER kunye nokubhala kunye nokucima imisebenzi, ngoko siphindaphinda uhlalutyo olufanayo lokufunda, ukubhala, kunye nokucima imisebenzi. Siphetha ukuba ngokunciphisa impembelelo ye-PE imijikelezo kunye nokufunda, akukho budlelwane phakathi kwexabiso le-RBER kunye nenani lokubhala kunye nokucima.
Ke, kukho iimodeli zedisk apho iimpazamo zokuphulwa kokufunda zinempembelelo enkulu kwi-RBER. Ngakolunye uhlangothi, akukho bungqina bokuba i-RBER ichaphazeleka ngokubhala iimpazamo zokuphulwa kunye neempazamo zokucima okungaphelelanga.
4.2.4 I-RBER kunye ne-lithography.
Umahluko kubungakanani bento unokuchaza ngokuyinxenye umahluko kumaxabiso e-RBER phakathi kweemodeli zokuqhuba usebenzisa itekhnoloji efanayo, okt MLC okanye SLC. (Jonga iTheyibhile 1 ngoshwankathelo lwemifuziselo eyahlukeneyo ebandakanyiweyo kolu phononongo).
Ngokomzekelo, iimodeli ze-2 ze-SLC ezine-34nm lithography (iimodeli ze-SLC-A kunye ne-SLC-D) zine-RBER engumyalelo wobukhulu obuphezulu kuneemodeli ze-2 kunye ne-50nm microelectronic lithography (iimodeli ze-SLC-B kunye ne-SLC-C). Kwimeko yeemodeli ze-MLC, kuphela imodeli ye-43nm (MLC-B) ene-RBER ephakathi eyi-50% ephezulu kunezinye iimodeli ze-3 ezine-50nm lithography. Ngaphezu koko, lo mahluko kwi-RBER unyuka nge-4 njengoko i-drive igugile, njengoko kuboniswe kwi-Figure 2. Ekugqibeleni, i-lithography encinci inokuchaza i-RBER ephezulu ye-eMLC drives xa kuthelekiswa ne-MLC drives. Ngokubanzi, sinobungqina obucacileyo bokuba i-lithography ichaphazela i-RBER.
4.2.5. Ubukho bezinye iimpazamo.
Siphande ubudlelwane phakathi kwe-RBER kunye nezinye iintlobo zeempazamo, ezifana neempazamo ezingenakulungiseka, iimpazamo zexesha lokuvala, njl., ngokukodwa, ukuba ixabiso le-RBER liba phezulu emva kwenyanga yokuvezwa kwezinye iintlobo zeempazamo.
Umzobo we-1 ubonisa ukuba ngelixa i-RBER yenyanga edlulileyo iqikelele ngamaxabiso e-RBER ezayo (i-correlation coefficient enkulu kune-0,8), akukho kulungelelaniswa okubalulekileyo phakathi kweempazamo ezingenakulungiseka kunye ne-RBER (iqela elifanelekileyo lezinto kwi-Figure 1). Kwezinye iintlobo zeempazamo, i-coefficient yokulungelelanisa ingaphantsi (engaboniswanga kumfanekiso). Siphinde saphonononga ubudlelwane phakathi kwe-RBER kunye neempazamo ezingenakulungiseka kwiCandelo 5.2 leli phepha.
4.2.6. Impembelelo yezinye izinto.
Sifumene ubungqina bokuba kukho izinto ezinempembelelo enkulu kwi-RBER ukuba idatha yethu ayinakuphendula. Ngokukodwa, siqaphele ukuba i-RBER yemodeli yediski enikiweyo iyahluka ngokuxhomekeke kwiqela apho idiski isetyenziswe khona. Umzekelo omhle nguMfanekiso we-4, obonisa i-RBER njengomsebenzi we-PE cycles kwi-MLC-D drives kumaqela amathathu ahlukeneyo (imigca edayiweyo) kwaye uyithelekisa ne-RBER yalo mzekelo ngokumalunga nenani elipheleleyo lokuqhuba (umgca oqinileyo). Sifumanisa ukuba lo mahluko uyaqhubeka nokuba sinciphisa impembelelo yezinto ezifana nobudala bediski okanye inani lokufundwa.
Enye ingcaciso enokwenzeka yoku kukumahluko kuhlobo lomthwalo womsebenzi kuwo wonke amaqela, njengoko siqwalasela ukuba amaqela anomlinganiselo ophakamileyo wokufunda/wokubhala anelona RBER liphezulu.
Irayisi. 4 a), b). Amaxabiso e-Median RBER njengomsebenzi wemijikelo ye-PE kumaqela amathathu ahlukeneyo kunye nokuxhomekeka komlinganiselo wokufunda/wokubhala kwinani lemijikelo ye-PE yamaqela amathathu ahlukeneyo.
Umzekelo, uMzobo 4(b) ubonisa umlinganiselo wokufunda/wokubhala wamaqela ahlukeneyo emodeli ye-MLC-D yokuqhuba. Nangona kunjalo, umlinganiselo wokufunda / wokubhala awuchazi ukungafani phakathi kwamaqela kuzo zonke iimodeli, ngoko ke kunokubakho ezinye izinto ezingenayo idatha yethu, njengezinto zokusingqongileyo okanye ezinye iiparitha zomthwalo wangaphandle.
4.3. I-RBER ngexesha lovavanyo olukhawulezayo lokuqina.
Uninzi lomsebenzi wesayensi, kunye novavanyo olwenziweyo xa kuthengwa imithombo yeendaba kwisikali semizi-mveliso, xela kwangaphambili ukuthembeka kwezixhobo ebaleni ngokusekelwe kwiziphumo zovavanyo olukhawulezileyo lokuqina. Siye sagqiba ekubeni sibone ukuba iziphumo zolo vavanyo zihambelana njani namava asebenzayo ekusebenzeni kwemithombo yeendaba yokugcina izinto.
Uhlalutyo lweziphumo zovavanyo oluqhutywe kusetyenziswa indlela yovavanyo olukhawulezileyo lwezixhobo ezinikezelwe kumaziko edatha kaGoogle lubonise ukuba amaxabiso e-RBER entsimi aphezulu kakhulu kunokuba bekuqikelelwe. Ngokomzekelo, kwi-eMLC-imodeli, i-RBER ephakathi kwiidiski eziqhutywe kwintsimi (ekupheleni kokuvavanya inani lemijikelezo ye-PE yafikelela kwi-600) yayiyi-1e-05, ngelixa ngokuhambelana neziphumo zovavanyo olukhawulezayo lwe-preliminary, le RBER ixabiso kufuneka ihambelane ngaphezu 4000 PE imijikelo. Oku kubonisa ukuba kunzima kakhulu ukuqikelela ngokuchanekileyo ixabiso le-RBER kwintsimi esekelwe kuqikelelo lwe-RBER olufunyenwe kwiimvavanyo zebhubhoratri.
Sikwaqaphele ukuba ezinye iintlobo zeempazamo kunzima kakhulu ukuphinda zivelise kwakhona ngexesha lovavanyo olukhawulezileyo. Ngokomzekelo, kwimeko yemodeli ye-MLC-B, phantse i-60% yee-drives kwintsimi ifumana iimpazamo ezingalungisekiyo kwaye phantse i-80% ye-drive iphuhlisa iibhloko ezimbi. Nangona kunjalo, ngexesha lokuvavanywa konyamezelo olukhawulezileyo, akukho nasinye kwizixhobo ezithandathu eziye zafumana naziphi na iimpazamo ezingalungisekiyo de iidrive zifike ngaphezulu kokuphindwe kathathu kumda womjikelo we-PE. Kwiimodeli ze-eMLC, iimpazamo ezingenakulungiseka zenzeke ngaphezu kwe-80% yokuqhuba kwintsimi, ngelixa ngexesha lokuvavanya ngokukhawuleza iimpazamo ezinjalo zenzeke emva kokufikelela kwi-15000 PE cycles.
Siphinde sajonga i-RBER exelwe kumsebenzi wophando wangaphambili, owawusekwe kuvavanyo kwindawo elawulwayo, kwaye sagqiba kwelokuba uluhlu lwamaxabiso lwalubanzi kakhulu. Ngokomzekelo, uL.M. UGrupp kunye nabanye kwingxelo yabo yomsebenzi ka-2009-2012 amaxabiso e-RBER kwiidrive ezikufutshane nokufikelela kwimida yomjikelo we-PE. Ngokomzekelo, kwizixhobo ze-SLC kunye ne-MLC ezinobungakanani be-lithography ezifana nezo zisetyenziswa kumsebenzi wethu (25-50nm), ixabiso le-RBER lisuka kwi-1e-08 ukuya kwi-1e-03, kunye neemodeli ezininzi zokuqhuba ezivavanywayo ezinexabiso le-RBER kufutshane ne-1e- 06.
Kwisifundo sethu, iimodeli ezintathu zokuqhuba ezifikelele kumda wokujikeleza we-PE zine-RBER ukusuka kwi-3e-08 ukuya kwi-8e-08. Nokuba sithathela ingqalelo ukuba amanani ethu akwimida esezantsi kwaye anokuba makhulu ngokuphindwe kali-16 kwimeko embi kakhulu, okanye kuthathelwa ingqalelo ipesenti ye-95 ye-RBER, amaxabiso ethu asephantsi kakhulu.
Lilonke, ngelixa amaxabiso okwenyani e-RBER ephezulu kunamaxabiso aqikelelweyo asekwe kuvavanyo olukhawulezileyo lokuqina, asephantsi kunee-RBER ezininzi zezixhobo ezifanayo ezixelwe kwamanye amaphepha ophando kwaye zibalwe kwiimvavanyo zaselabhoratri. Oku kuthetha ukuba akufuneki uthembele kumaxabiso e-RBER aqikelelweyo athatyathwe kuvavanyo olukhawulezileyo lokuqina.
5. Iimpazamo ezingalungisekiyo.
Njengoko kuxhaphake ukuxhaphaka kweempazamo ezingenakulungiseka (UEs), eziye zaxoxwa ngazo kwiCandelo lesi-3 leli phepha, kweli candelo siphonononga iimpawu zabo ngokweenkcukacha ezithe vetshe. Siqala ngokuxoxa ukuba yeyiphi imetriki ekufuneka isetyenziswe ukulinganisa i-UE, inxulumana njani ne-RBER, kunye nendlela i-UE echatshazelwa ngayo zizinto ezahlukeneyo.
5.1. Kutheni umlinganiselo we-UBER ungenzi ngqiqo.
Umgangatho we-metric obonisa iimpazamo ezingenakulungiseka yi-UBER engalungisekiyo i-bit error rate, oko kukuthi, umlinganiselo wenani leempazamo ze-bit ezingalungisekiyo kwitotali yenani lebits ezifundiweyo.
Le metric ithatha ngokungafihlisiyo ukuba inani leempazamo ezingalungisekiyo libotshelelwe ngandlel' ithile kwinani leebhithi ezifundiweyo, kwaye ke ngoko kufuneka zenziwe ngokwesiqhelo ngeli nani.
Le ngcinga ivumelekile kwiimpazamo ezilungisekayo, apho inani leempazamo ezibonwe kwinyanga enikiweyo lifunyenwe lihambelana kakhulu nenani lokufundwa kwexesha elifanayo (i-Spearman coefficient coefficient enkulu kune-0.9). Isizathu solungelelwaniso olululo kukuba nentwana enye embi, logama nje ilungiswa kusetyenziswa i-ECC, iya kuqhubeka nokunyusa inani leempazamo ngomsebenzi ngamnye wokufunda ofikelelwa yiyo, kuba uvandlakanyo lweseli equlathe isuntswana elibi. ayilungiswanga ngokukhawuleza xa kubhaqwe impazamo (iidiski ngamaxesha athile ziphinda zibhale amaphepha aneebhithi ezonakeleyo).
Ingqikelelo efanayo ayisebenzi kwiimpazamo ezingenakulungiswa. Impazamo engalungisekiyo ithintela ukusetyenziswa okuqhubekayo kwebhloko eyonakalisiweyo, ngoko ke xa ifunyenwe, ibhloko enjalo ayiyi kuchaphazela inani leempazamo kwixesha elizayo.
Ukuqinisekisa ngokusesikweni le ngcinga, sasebenzisa iimetriki ezahlukeneyo ukulinganisa ubudlelwane phakathi kwenani elifundwayo kwinyanga enikiweyo yobomi bedisk kunye nenani leempazamo ezingenakulungiseka ngexesha elifanayo lexesha, kubandakanywa i-coefficients ehlukeneyo yokulungelelanisa (Pearson, Spearman, Kendall) , kunye nokuhlolwa okubonwayo kweegrafu . Ukongeza kwinani leempazamo ezingenakulungiseka, siphinde sajonga ukuphindaphinda kweziganeko zempazamo ezingenakulungiseka (oko kukuthi, amathuba okuba idisk iya kuba nesiganeko esinye esinjalo ngexesha elithile) kunye nobudlelwane babo bokufunda imisebenzi.
Asifumananga bungqina bonxibelelwano phakathi kwenani lokufundwa kunye nenani leempazamo ezingalungiswanga. Kuzo zonke iimodeli zokuqhuba, i-coefficients yokulungelelanisa yayingaphantsi kwe-0.02, kwaye iigrafu azizange zibonise ukwanda kwe-UE njengoko inani lokufundwa linyuka.
KwiCandelo 5.4 leli phepha, sixubusha ukuba imisebenzi yokubhala kunye nokucima nayo ayinayo into ehambelanayo neempazamo ezingenakulungiswa, ngoko ke enye inkcazo ye-UBER, eqhelekileyo ngokubhala okanye ukucima imisebenzi esikhundleni semisebenzi yokufunda, ayinayo intsingiselo.
Ngoko ke siphetha ukuba i-UBER ayiyona i-metric enentsingiselo, ngaphandle kokuba mhlawumbi xa ivavanywa kwiindawo ezilawulwayo apho inani lokufundwa libekwe ngumfuni. Ukuba i-UBER isetyenziswa njenge-metric ngexesha lovavanyo lwasendle, iya kuthoba ngokuzenzileyo isantya sempazamo kwiidrive ezinobalo oluphezulu lokufunda kwaye inyuse ngokufanelekileyo izinga lemposiso kwiidrive ezinobalo oluphantsi lokufunda, kuba iimpazamo ezingenakulungiseka zenzeka kungakhathaliseki ukuba kufundwa kangakanani na.
5.2. Iimpazamo ezingalungisekiyo kunye ne-RBER.
Ukufaneleka kwe-RBER kuchazwa yinto yokuba isebenza njengomlinganiselo wokumisela ukuthembeka okupheleleyo kwe-drive, ngokukodwa, ngokusekelwe kumathuba eempazamo ezingenakulungiseka. Kumsebenzi wabo, u-N. Mielke et al ngo-2008 babe ngabokuqala ukucebisa ukucacisa izinga lempazamo elilindelekileyo njengomsebenzi we-RBER. Ukususela ngoko, abaninzi abaphuhlisi benkqubo baye basebenzisa iindlela ezifanayo, ezifana nokuqikelela izinga lempazamo elilindelekileyo njengomsebenzi we-RBER kunye nohlobo lwe-ECC.
Injongo yeli candelo kukubonisa indlela i-RBER iqikelela ngayo iimpazamo ezingalungisekiyo. Masiqale ngoMzobo 5a, oceba i-RBER ephakathi kwiqela leemodeli zokuqhuba zesizukulwana sokuqala ngokuchasene nepesenti yeentsuku ebezisetyenziswa ezifumene iimpazamo ezingalungisekiyo ze-UE. Kufuneka kuqatshelwe ukuba ezinye zeemodeli ze-16 eziboniswe kwigrafu azifakwanga kwiThebhile 1 ngenxa yokungabikho kolwazi lohlalutyo.
Irayisi. 5a. Ubudlelwane phakathi kwe-RBER ephakathi kunye neempazamo ezingalungisekiyo kwiimodeli ezahlukeneyo zokuqhuba.
Irayisi. 5b. Ubudlelwane phakathi kwe-RBER ephakathi kunye neempazamo ezingalungisekiyo kwiidrive ezahlukeneyo zemodeli efanayo.
Khumbula ukuba zonke iimodeli kwisizukulwana esinye zisebenzisa indlela ye-ECC efanayo, ngoko ke umahluko phakathi kweemodeli uzimele kumahluko we-ECC. Asibonanga lunxulumano phakathi kweziganeko ze-RBER kunye ne-UE. Senze iyelenqe elifanayo le-95 yepesenti ye-RBER ngokuchasene nokuba nokwenzeka kwe-UE kwaye kwakhona asibonanga lunxulumano.
Emva koko, siphinda sihlolisise uhlalutyo kwinqanaba le-granular kwi-drives nganye, oko kukuthi, sizame ukufumanisa ukuba kukho iidrives apho ixabiso eliphezulu le-RBER lihambelana ne-frequency ephezulu ye-UE. Njengomzekelo, i-Figure 5b iceba i-RBER ephakathi kwi-drive nganye ye-MLC-c imodeli ngokubhekiselele kwinani le-UEs (iziphumo ezifanayo nezo zifunyenwe kwi-95th percentile RBER). Kwakhona, asibonanga naluphi na unxulumano phakathi kwe-RBER kunye ne-UE.
Ekugqibeleni, senze uhlalutyo lwexesha oluchanekileyo ukujonga ukuba iinyanga zokusebenza zokuqhuba nge-RBER ephezulu ziya kuhambelana neenyanga apho i-UEs yenzeke. Umzobo we-1 sele ubonise ukuba i-coefficient yokulungelelanisa phakathi kweempazamo ezingenakulungiseka kunye ne-RBER iphantsi kakhulu. Siye sazama iindlela ezahlukeneyo zokucwangcisa amathuba e-UE njengomsebenzi we-RBER kwaye asifumananga bungqina bokunxibelelana.
Ke, sigqiba kwelokuba i-RBER yimetric engathembekanga yokuqikelela i-UE. Oku kunokuthetha ukuba iindlela zokungaphumeleli ezikhokelela kwi-RBER zihluke kwiindlela ezikhokelela kwiimpazamo ezingenakulungiseka (umzekelo, iimpazamo eziqulethwe kwiiseli ezizimeleyo ngokubhekiselele kwiingxaki ezinkulu ezenzeka kunye nesixhobo sonke).
5.3. Iimpazamo ezingalungisekiyo kunye nokukrala.
Ekubeni ukukhathala yenye yeengxaki eziphambili zememori ye-flash, i-Figure 6 ibonisa amathuba omhla ngemihla yeempazamo ezingenakulungiseka zokuqhuba njengomsebenzi we-PE cycles.
Umzobo 6. Ithuba lemihla ngemihla lokuvela kweempazamo ezingenakulungiseka zokuqhuba ngokuxhomekeke kwimijikelo ye-PE.
Siqaphela ukuba amathuba e-UE ayanda ngokuqhubekayo kunye nobudala bokuqhuba. Nangona kunjalo, njengakwi-RBER, ukunyuka kucotha kunokuba kucingelwa ngokuqhelekileyo: iigrafu zibonisa ukuba ii-UEs zikhula ngokulandelelana kunokuba zikhule ngokukhawuleza kunye nemijikelo ye-PE.
Izigqibo ezibini esizenzileyo kwi-RBER nazo zisebenza kwii-UEs: okokuqala, akukho ukwanda okucacileyo kwimpazamo enokwenzeka emva kokuba umda we-PE ufikeleleke, njengakwi-Figure 6 ye-MLC-D imodeli enomda we-PE 3000. Okwesibini, okwesibini, okwesibini, , izinga lemposiso liyahluka phakathi kweemodeli ezahlukeneyo, nakwiklasi enye. Nangona kunjalo, lo mahluko awukho mkhulu njenge-RBER.
Ekugqibeleni, ukuxhasa iziphumo zethu kwiCandelo 5.2, sifumene ukuba ngaphakathi kweklasi enye yemodeli (MLC vs. SLC), iimodeli ezinexabiso eliphantsi le-RBER ββkwinani elinikiweyo lemijikelo ye-PE ayisiyiyo eyona iphantsi. ukuba nokwenzeka kwe-EU ukwenzeka. Umzekelo, ngaphezulu kwemijikelo ye-PE engama-3000, iimodeli ze-MLC-D zazinexabiso le-RBER ngamaxesha ama-4 ngaphantsi kuneemodeli ze-MLC-B, kodwa ukubakho kwe-UE yenani elifanayo lemijikelo ye-PE yayiphezulu kancinci kwiimodeli ze-MLC-D kune-MLC-B. iimodeli.
Umzobo 7. Ithuba lenyanga lokuvela kweempazamo ezingenakulungiseka zokuqhuba njengomsebenzi wobukho beempazamo zangaphambili zeentlobo ezahlukeneyo.
5.4. Iimpazamo ezingenakulungiseka kunye nomthwalo womsebenzi.
Ngenxa yezizathu ezifanayo ukuba umthwalo wokusebenza unokuchaphazela i-RBER (jonga iCandelo 4.2.3), kunokulindelwa ukuba nayo ichaphazele i-UE. Umzekelo, njengoko sibonile ukuba iimpazamo zokwaphulwa kwemithetho yokufunda zichaphazela i-RBER, imisebenzi yokufunda inokunyusa ukubakho kweempazamo ezingenakulungiseka.
Senze uphononongo oluneenkcukacha malunga nefuthe lomthwalo womsebenzi kwi-EU. Nangona kunjalo, njengoko kuphawuliwe kwiCandelo 5.1, asizange sifumane ubudlelwane phakathi kwe-UE kunye nenani lokufundwa. Siphindaphinda uhlalutyo olufanayo lokubhala kunye nokucima imisebenzi kwaye saphinda sabona akukho kulungelelaniswa.
Qaphela ukuba xa ujonga nje kuqala, oku kubonakala ngathi kuyaphikisana noqwalaselo lwethu lwangaphambili lokuba iimpazamo ezingalungisekiyo zinxulunyaniswa nemijikelo ye-PE. Ke ngoko, umntu unokulindela ulungelelwaniso kunye nenani lokubhala kunye nokucima imisebenzi.
Nangona kunjalo, kuhlalutyo lwethu lwempembelelo ye-PE cycles, siqhathanise inani leempazamo ezingenakulungiswa kwinyanga enikiweyo kunye nenani elipheleleyo lemijikelezo ye-PE efunyenwe yi-drive ebomini bayo yonke imihla ukuze kulinganiswe umphumo wokugqoka. Xa sifunda impembelelo yomthwalo womsebenzi, sijonge kwiinyanga zokusebenza kwe-drive enenani eliphezulu lemisebenzi yokufunda / ukubhala / ukucima kwinyanga ethile, nayo yayinethuba eliphezulu lokubangela iimpazamo ezingenakulungiseka, oko kukuthi, asizange sithathe bhala inani elipheleleyo lemisebenzi yokufunda/yokubhala/yokucima.
Ngenxa yoko, siye safikelela kwisigqibo sokuba ukufunda iimpazamo zokuphulwa, ukubhala iimpazamo zokuphulwa, kunye neempazamo zokucima okungaphelelanga azikho izinto eziphambili ekuphuhlisweni kweempazamo ezingenakulungiseka.
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