Menene Algorithms Amfani don SSD vs HDD?
2024-09-19 14:17:26
Solid State Drives (SSD) da Hard Disk Drives (HDD) suna da fasahohi daban-daban, kuma dabarun da suke amfani da su don sarrafa ma'ajiya, dawo da bayanai, da haɓaka aiki sun bambanta sosai.
Teburin Abubuwan Ciki
1. SSD (Solid State Drive) Algorithms
SSDs suna amfani da ƙwaƙwalwar walƙiya na tushen NAND, kuma algorithms an tsara su don haɓaka saurin gudu, matakin sawa, da tsawon na'urar. Wasu daga cikin manyan algorithms sune:
Matsayin sawa:
Manufa: Yana tabbatar da cewa zagayowar rubutu/ gogewa sun tarwatse daidai gwargwado a tsakanin dukkan ƙwayoyin ƙwaƙwalwar ajiya, suna hana lalacewa da wuri akan kowane tantanin halitta.
Yadda Ake Aiki: Wannan hanya koyaushe tana bincika ko wane tubalan memori ne aka fi amfani da su tare da sake rarraba bayanai don guje wa wuce gona da iri.
Tarin shara
Manufa: Yana cire bayanan da ba daidai ba (ko bayanan da aka yiwa alama don gogewa) daga tubalan don 'yantar da sarari da haɓaka saurin gudu.
Yadda Yake Aiki: Lokacin da toshewar ƙwaƙwalwar ajiya ta ƙunshi bayanai masu inganci da mara inganci, hanyar tattara shara tana ƙarfafa ingantattun bayanai zuwa toshe guda ɗaya kuma ta 'yantar da sauran tubalan don sabbin bayanai.
TRIM:
Manufa: Yana sadarwa da SSD wanda ba a amfani da tubalan bayanai kuma ana iya goge su, don haka yana hanzarta ayyukan rubutu.
Yadda yake aiki: Lokacin da aka lalata bayanai, tsarin aiki yana aika umarnin TRIM zuwa SSD, yana ba shi damar. shafe tubalan da aka keɓe kafin lokaci, rage yawan latency.
Lambar Gyara Kuskure (ECC):
Manufar: Gano da gyara kurakuran bayanai waɗanda zasu iya faruwa yayin aikin karantawa/rubutu.
Yadda yake aiki: SSDs suna amfani da algorithms gyara kuskure don tabbatar da cewa bayanan daidai ne, kamar yadda ƙwayoyin ƙwaƙwalwar NAND na iya zama mai saurin kamuwa da kurakurai masu juyawa.
Sama da Bayarwa:
Manufa: Yana keɓance ƙarin ƙarfin ajiya don taimakawa tare da daidaita sawu, tarin shara, da aikin gabaɗaya.
Yadda yake aiki: Wannan dabarar tana ba da ƙarin ƙwaƙwalwar filashin da ba a iya gani ga mai amfani amma SSD ke amfani da shi a ciki don sarrafa ɓarnar ɓarna da haɓaka aiki.
Gudanarwa mara kyau:
Manufa: Ganewa da keɓance kuskuren tubalan ƙwaƙwalwar ajiya.
Yadda yake aiki: SSDs suna lura da lafiyar tubalan ƙwaƙwalwar ajiya kuma suna yiwa duk wani lalacewa a matsayin mara amfani, yana tabbatar da cewa ba a taɓa rubuta bayanai zuwa waɗannan muggan tubalan ba.
2. HDD (Hard Disk Drive) Algorithms
HDDs suna amfani da farantin maganadisu mai jujjuyawa don adana bayanai da karantawa/rubutu kawunansu don samun dama gare shi. An tsara algorithms ɗin su don sarrafa yanayin jiki na matsakaicin ajiya da haɓaka aiki. Mabuɗin algorithms sun haɗa da:
Algorithms na Tsara Disk:
Manufar:
Yana inganta tsarin da ake shiga sassan faifai don rage neman lokaci da lattin juyawa.
Misalai:
Algorithm na Elevator (SCAN): Matsar da kan karanta/rubutu a hanya ɗaya har sai ya kai ƙarshen faifai kafin juyawa, yana rage matsakaicin lokacin neman.
Mafi Gajin Neman Farko (SSTF): Yana ba da fifiko ga buƙatun da ke kusa da matsayi na yanzu don rage lokacin neman.
Farko-Zo, Farko-Bautawa (FCFS): Ana aiwatar da buƙatun a cikin tsari da suka zo, kodayake wannan bai da inganci fiye da SSTF ko SCAN.
Rubuta caching:
Manufa: Yana haɓaka aikin rubutu ta hanyar adana bayanai na ɗan lokaci a cikin ma'ajin kafin rubuta shi zuwa faifai.
Yadda yake aiki: Ana rubuta bayanai zuwa ga ma'aunin ma'adanar ma'auni mai sauri, sa'an nan kuma a rubuta shi zuwa faifai mai saurin juyawa cikin batches, yana rage yawan lokacin da ake buƙata don ayyukan rubutu.
Ci gaba Karatun Caching (Prefetching):
Manufa: Yana haɓaka aikin karantawa ta hanyar tsinkayar buƙatun bayanai na gaba da karanta bayanai a cikin ma'ajin kafin a zahiri nema.
Yadda yake aiki: Dangane da tsarin samun dama, algorithm ɗin ya riga ya loda bayanai daga sassan da ke kusa ko waƙoƙi a cikin cache don rage jinkirin karatu.
Gano Kuskure da Gyara (ECC):
Manufar: Yana tabbatar da amincin bayanan da aka adana akan faifai.
Yadda yake aiki: HDDs suna amfani da algorithms na ECC don ganowa da gyara kurakurai waɗanda zasu iya faruwa saboda tsangwama na maganadisu ko lalacewa ta saman platter.
Sake Taswirar Sashin Mummuna:
Manufa: Yana tabbatar da amincin bayanai ta hanyar karkatar da rubuce-rubuce daga ɓangarori marasa kyau zuwa sassa.
Yadda yake aiki: HDD yana adana jerin ɓangarori marasa kyau kuma yana amfani da sassan gyara don maye gurbin su, yana tabbatar da cewa an rubuta bayanai zuwa wuraren amintattu na faifai.
Rushewa:
Manufa: Yana sake tsara rarrabuwar bayanai don inganta aikin karatu da rubutu.
Yadda yake aiki: Lokacin da fayiloli suka watsu a sassa daban-daban na faifai (fragmentation), defragmentation algorithm yana sake tsara bayanan don sa su ci gaba, yana rage neman lokaci don samun damar fayiloli.
3.Takaitacciyar Bambance-Bambance
Algorithms na SSD suna mayar da hankali kan matakin sawa, tarin shara, da gyara kurakurai saboda gajerun zagayowar rubutu na ƙwaƙwalwar walƙiya.
Algorithms HDD suna mayar da hankali kan inganta hanyoyin injiniya, kamar rage lokacin neman da sarrafa rarrabuwar faifai.
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