Pakalipano, kutchuka kwa anthu ambiri kumakhala kuyendetsa bwino kapena SSD (Solid State Dmpanda). Izi ndi chifukwa chakuti amatha kupereka maofesi onse olemba-kulemba kwambiri komanso kudalirika. Mosiyana ndi zoyendetsa zowonongeka, palibe ziwalo zosunthira, ndipo kukumbukira kwapadera - NAND - imagwiritsidwa ntchito kusunga deta.
Pa nthawi ya kulembedwa, mitundu itatu ya kukumbukira kukugwiritsidwa ntchito mu SSD: MLC, SLC ndi TLC, ndipo m'nkhaniyi tiyesa kudziwa kuti ndi yani yabwino komanso kusiyana kotani pakati pawo.
Kuwonetseratu kufotokozera mitundu ya kukumbukira SLC, MLC ndi TLC
NAND kukumbukira kukumbukira kunatchulidwa patatha mtundu wapadera wa chidziwitso - Osati ((zomveka osati). Ngati simukupita kuzinthu zamakono, ndiye kuti NAND imapanga deta muzitsulo zing'onozing'ono (kapena masamba) ndikukuthandizani kuti mukwanitse kuwerenga mofulumira.
Tsopano tiyeni tiyang'ane kuti ndi mitundu iti ya kukumbukira yomwe imagwiritsidwa ntchito mu zoyendetsa dziko.
Maselo Osakwatira Akhaokha (SLC)
SLC ndi mtundu wosakumbukira umene maselo osungira amodzi omwe amagwiritsidwa ntchito kusungira chidziwitso (mwa njira, kumasuliridwa kwenikweni ku Chirasha ngati "selo limodzi". Ndiko, deta imodzi yosungirako idasungidwa mu selo limodzi. Gulu la kusungirako linapangitsa kuti likhale loti lizipereka mofulumira komanso cholembera chachikulu. Choncho, liwiro lowerenga lifika kufika 25 ms, ndipo chiwerengero cha zolemba zolemba ndi 100'000. Komabe, ngakhale kuti ndi zophweka, SLC ndizovuta kwambiri kukumbukira.
Zotsatira:
- Kufulumira kwa kuwerenga / kulemba;
- Chinthu chachikulu cholembera.
Wotsatsa:
- Mtengo wapamwamba
Maselo Amtundu Wambiri (MLC)
Gawo lotsatira pa kukula kwa kukumbukira fungo ndi mtundu wa MLC (mu Chirasha, umamveka ngati "selo wamitundu yambiri"). Mosiyana ndi SLC, imagwiritsa ntchito maselo awiri omwe amasungira zinthu ziwiri. Liwiro lowerenga-kulemba limakhalabe lalitali, koma chipiriro chimachepetsedwa kwambiri. Kulankhula mu manambala, apa liwiro lowerengera ndi 25 ms, ndipo chiwerengero cha zolemba zolemba ndi 3,000. Mtundu umenewu ndi wotchipa, choncho umagwiritsidwa ntchito kwambiri pamayendedwe.
Zotsatira:
- Mtengo wotsika;
- Limbikitsani kuwerenga / kulemba mofulumira poyerekeza ndi disks nthawi zonse.
Wotsatsa:
- Nambala yochepa ya zolemba zina.
Maselo Otetezedwa Atatu (TLC)
Ndipo potsiriza, mtundu wachitatu wa kukumbukira ndi TLC (dzina lachikumbutso cha Chirasha likumveka ngati "selo lamasitepe atatu"). Ponena za zaka ziwiri zapitazo, mtundu uwu ndi wotchipa ndipo pakalipano umakhala wodalirika mu zoyendetsera bajeti.
Mtundu uwu ndi wochuluka kwambiri, mabakita atatu amasungidwa pano mu selo iliyonse. Komanso, kulemera kwakukulu kumachepetsa kuĊµerenga / kulemba liwiro ndi kuchepetsa kupirira kwa disk. Mosiyana ndi mitundu ina ya kukumbukira, liwiro lapafupi lafupika kufika 75 ms, ndipo chiwerengero cha zolembedwanso ndizofika pa 1,000.
Zotsatira:
- Kusungirako deta yapamwamba;
- Mtengo wotsika.
Wotsatsa:
- Nambala yochepa yolemba zolemba;
- Vuto lowerenga / kulemba mofulumira.
Kutsiliza
Kuphatikizira, zikhoza kukumbukira kuti mtundu wa flash kwambiri ndi wotalika kwambiri ndi SLC. Komabe, chifukwa cha mtengo wamtengo wapatali, mitundu yotsika mtengo yadzaza ndi kukumbukira izi.
Budget, ndipo nthawi yomweyo, mofulumira kwambiri ndi mtundu wa TLC.
Ndipo potsiriza, kutanthauza golidi ndi mtundu wa MLC, umene umapereka mwamsanga kwambiri komanso wodalirika poyerekeza ndi disks wamba ndipo si mtengo wotsika kwambiri. Kuti muwone zofanana, onani tebulo ili m'munsimu. Pano pali zigawo zazikulu za mtundu wa kukumbukira zomwe zofananitsazo zinapangidwa.
