{"id":54587,"date":"2019-12-29T00:00:00","date_gmt":"2019-12-28T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/delimsya-opytom-kak-pokazyvayut-sebya-ssd-v-ramkah-raid-i-kakoj-uroven-massiva-vygodnee"},"modified":"2020-02-18T14:02:37","modified_gmt":"2020-02-18T11:02:37","slug":"delimsya-opytom-kak-pokazyvayut-sebya-ssd-v-ramkah-raid-i-kakoj-uroven-massiva-vygodnee","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/delimsya-opytom-kak-pokazyvayut-sebya-ssd-v-ramkah-raid-i-kakoj-uroven-massiva-vygodnee","title":{"rendered":"Ndajm\u00eb p\u00ebrvoj\u00ebn, si\u00e7 e tregojn\u00eb SSD n\u00eb kuad\u00ebr t\u00eb RAID dhe cilat nivele t\u00eb marrjes jan\u00eb m\u00eb t\u00eb dobishme.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00eb materia e kaluar<\/a><\/noindex> ne kemi shqyrtuar deri tani \u00e7\u00ebshtjen \"A \u00ebsht\u00eb e aplikueshme RAID n\u00eb SSD\" duke marr\u00eb si shembull disqet Kingston, por e b\u00ebm\u00eb k\u00ebt\u00eb vet\u00ebm n\u00eb kuad\u00ebr t\u00eb nivelit zero. N\u00eb k\u00ebt\u00eb artikull, ne do t\u00eb shqyrtojm\u00eb mund\u00ebsit\u00eb e p\u00ebrdorimit t\u00eb zgjidhjeve profesionale dhe sht\u00ebpiake NVMe n\u00eb llojet m\u00eb t\u00eb njohura t\u00eb grupeve RAID dhe do t\u00eb flasim p\u00ebr p\u00ebrputhshm\u00ebrin\u00eb e kontroler\u00ebve Broadcom<\/a><\/noindex> me disqet Kingston.<\/p>\n

\"Ndajm\u00eb
\n<\/a><\/noindex><\/p>\n

Pse \u00ebsht\u00eb e nevojshme RAID n\u00eb SSD?<\/h2>\n

\nAvantazhet e grupeve t\u00eb ruajtjes q\u00eb bazohen n\u00eb SSD krahasuar me grupet e ruajtjes q\u00eb bazohen n\u00eb disqe t\u00eb forta p\u00ebrfshijn\u00eb reduktimin e koh\u00ebs s\u00eb qasjes n\u00eb t\u00eb dh\u00ebna n\u00eb disqet dhe performanc\u00ebn e shk\u00eblqyer n\u00eb operacionet e leximit\/shkrimit. Megjithat\u00eb, p\u00ebr nj\u00eb performanc\u00eb ideale t\u00eb RAID-it bazuar n\u00eb SSD \u00ebsht\u00eb e nevojshme nj\u00eb kombinim optimal i procesorit, caches, softuerit dhe harduerit. Kur t\u00eb gjitha k\u00ebto faktor\u00eb punojn\u00eb s\u00eb bashku n\u00eb m\u00ebnyr\u00eb perfekte, nj\u00eb grup RAID i p\u00ebrb\u00ebr\u00eb nga SSD mund t\u00eb tejkaloj\u00eb n\u00eb m\u00ebnyr\u00eb t\u00eb konsiderueshme nj\u00eb konfigurim t\u00eb ngjash\u00ebm q\u00eb p\u00ebrdor HDD traditonal.<\/p>\n

Nj\u00eb SSD tipik konsumon m\u00eb pak energji se disqet e forta, k\u00ebshtu q\u00eb kur kombinoni nj\u00eb num\u00ebr t\u00eb madh t\u00eb disqeve t\u00eb ngurta n\u00eb nj\u00eb grup RAID, kursimi i energjis\u00eb krahasuar me nj\u00eb grup RAID t\u00eb p\u00ebrb\u00ebr\u00eb nga HDD mund t\u00eb \u00e7oj\u00eb gjithashtu n\u00eb uljen e shpenzimeve t\u00eb faturave t\u00eb energjis\u00eb p\u00ebr kompanit\u00eb.<\/p>\n

Megjithat\u00eb, SSD RAID ka kufizime dhe disavantazhe: p\u00ebrkat\u00ebsisht, \u00e7mimi m\u00eb i lart\u00eb p\u00ebr gigabajt hap\u00ebsire krahasuar me disk\u00ebt e fort\u00eb me kapacitet t\u00eb ngjash\u00ebm. Rradh\u00ebt kohore t\u00eb memories flash p\u00ebr t\u00eb d\u00ebshtuar jan\u00eb t\u00eb kufizuara nga nj\u00eb num\u00ebr i caktuar ciklesh t\u00eb rinovimit. Kjo do t\u00eb thot\u00eb se disqet SSD kan\u00eb nj\u00eb afat t\u00eb caktuar jet\u00ebshkallimi q\u00eb varet nga p\u00ebrdorimi: sa m\u00eb aktive t\u00eb jet\u00eb rinovimi i informacionit mbi t\u00eb, aq m\u00eb shpejt disku do t\u00eb d\u00ebshtoj\u00eb. Nga ana tjet\u00ebr, disqet e ngurta p\u00ebr p\u00ebrdorim t\u00eb korporatave kan\u00eb nj\u00eb jet\u00ebgjat\u00ebsi t\u00eb pranueshme t\u00eb krahasueshme me disqet e forta mekanike.<\/p>\n

Si e mbijetojn\u00eb SSD-t\u00eb Kingston n\u00eb modin RAID me kontroler\u00ebt Broadcom<\/h2>\n

\nN\u00eb fillim t\u00eb shfaqjes s\u00eb disqeve SSD, konstrukcioni RAID p\u00ebrmbante shum\u00eb nuanca. N\u00eb k\u00ebt\u00eb kontekst, p\u00ebrdorimi i disqeve HDD me m\u00eb pak besueshm\u00ebri luajti nj\u00eb rol t\u00eb madh. Disqet e ngurta jan\u00eb shum\u00eb m\u00eb t\u00eb besueshme se homolog\u00ebt e tyre q\u00eb mb\u00ebshteten n\u00eb disk\u00ebt magnetik\u00eb. Si\u00e7 e dim\u00eb, n\u00eb zgjidhjet SSD nuk ka element\u00eb n\u00eb l\u00ebvizje, k\u00ebshtu q\u00eb d\u00ebmtimet mekanike jan\u00eb reduktuara n\u00eb zero. D\u00ebshtimi i disqeve t\u00eb ngurta p\u00ebr shkak t\u00eb rrymave elektrike \u00ebsht\u00eb gjithashtu shum\u00eb e pamundur, duke pasur parasysh se n\u00eb nivelin e nj\u00eb PC sht\u00ebpiak dhe \u00e7do server ju mbrojn\u00eb UPS, filtrat e rrjetit dhe madje edhe blloku i energjis\u00eb.<\/p>\n

P\u00ebr m\u00eb tep\u00ebr, disqet e ngurta kan\u00eb nj\u00eb avantazh t\u00eb r\u00ebnd\u00ebsish\u00ebm: edhe n\u00ebse qelizat e memories jan\u00eb t\u00eb konsumuar nga shkrimi - leximet e t\u00eb dh\u00ebnave prej tyre akoma mund t\u00eb kryhen, nd\u00ebrsa n\u00eb rastin e d\u00ebmtimit t\u00eb disqes magnetike \u2013 fatkeq\u00ebsisht jo.<\/p>\n

\"Ndajm\u00eb
\n
\nSot, p\u00ebrdorimi i zgjidhjeve SSD n\u00eb grupe RAID t\u00eb niveleve t\u00eb ndryshme \u00ebsht\u00eb b\u00ebr\u00eb nj\u00eb praktik\u00eb normale. E r\u00ebnd\u00ebsishme \u00ebsht\u00eb t\u00eb zgjidhni disqet e ngurta t\u00eb cilat kan\u00eb latenc\u00eb minimale. Gjithashtu, n\u00eb m\u00ebnyr\u00eb ideale, duhet t\u00eb p\u00ebrdoren SSD t\u00eb t\u00eb nj\u00ebjt\u00ebs mark\u00eb dhe modeli, n\u00eb m\u00ebnyr\u00eb q\u00eb t\u00eb mos ndodh\u00eb nj\u00eb p\u00ebrzierje e disqeve q\u00eb mb\u00ebshtesin lloje t\u00eb ndryshme ngarkesash dhe jan\u00eb t\u00eb nd\u00ebrtuara mbi baza t\u00eb ndryshme memoriesh, kontrollesh dhe teknologjish. Pra, n\u00ebse kemi vendosur t\u00eb blejm\u00eb kat\u00ebr ose 16 SSD NVMe nga Kingston p\u00ebr t\u00eb krijuar nj\u00eb grup RAID \u2013 \u00ebsht\u00eb m\u00eb mir\u00eb q\u00eb t\u00eb gjith\u00eb ata t\u00eb jen\u00eb nga seria e nj\u00ebjt\u00eb dhe nga gama e produkteve. <\/p>\n

P\u00ebr ta th\u00ebn\u00eb k\u00ebt\u00eb, n\u00eb artikullin e kaluar.<\/a><\/noindex> Ne nuk e kemi sjell\u00eb rast\u00ebsisht n\u00eb v\u00ebmendje kontroller\u00ebt Broadcom, kur flasim p\u00ebr SSD NVMe nga Kingston. Kjo \u00ebsht\u00eb p\u00ebr shkak se n\u00eb manualet p\u00ebr k\u00ebto pajisje p\u00ebrfshihen menj\u00ebher\u00eb disqet e p\u00ebrputhshme (p\u00ebrfshir\u00eb zgjidhjet nga prodhuesi amerikan t\u00eb disk\u00ebve SSD t\u00eb p\u00ebrmendur m\u00eb par\u00eb), me t\u00eb cilat kontrolleri do t\u00eb punoj\u00eb pa v\u00ebshtir\u00ebsi. Kjo \u00ebsht\u00eb informacioni mbi t\u00eb cilin duhet t\u00eb mb\u00ebshteteni kur zgjidhni kombinimin \"kontroller-SSD\" p\u00ebr RAID.<\/p>\n

Shqyrtojm\u00eb funksionin e SSD Kingston n\u00eb llojet m\u00eb t\u00eb njohura t\u00eb RAID - \"1\", \"5\", \"10\", \"50\"<\/h2>\n

\nPra, niveli \"zero\" i RAID nuk ofron mbivendosje t\u00eb t\u00eb dh\u00ebnave, vet\u00ebm rrit performance. Asnj\u00eb mbrojtje t\u00eb dh\u00ebnash nuk ofron RAID 0, prandaj ne nuk do ta diskutojm\u00eb k\u00ebt\u00eb n\u00eb segmentin korporativ. RAID 1, nga ana tjet\u00ebr, ofron mbivendosje t\u00eb plot\u00eb, por vet\u00ebm nj\u00eb rritje t\u00eb modeste t\u00eb performanc\u00ebs, prandaj duhet t\u00eb merret n\u00eb konsiderat\u00eb vet\u00ebm n\u00eb rastin kur rritja e performanc\u00ebs nuk \u00ebsht\u00eb faktori ky\u00e7 n\u00eb krijimin e nj\u00eb grupi RAID nga SSD.<\/p>\n

RAID 1 n\u00eb baz\u00eb t\u00eb SSD Kingston dhe kontroler\u00ebve Broadcom<\/h2>\n

\nPra, RAID array i nivelit t\u00eb par\u00eb mbi baz\u00ebn e kontrolluesit Broadcom MegaRAID 9460-16i bashkon nga dy deri n\u00eb 32 disqe Kingston, t\u00eb cilat jan\u00eb kopje t\u00eb nj\u00ebra-tjetr\u00ebs, dhe siguron nj\u00eb redundanc\u00eb t\u00eb plot\u00eb. N\u00ebse gjat\u00eb p\u00ebrdorimit t\u00eb HDD tradicional\u00eb shpejt\u00ebsia e shkrimit dhe leximit t\u00eb t\u00eb dh\u00ebnave mbetej n\u00eb nivelin e k\u00ebtij HDD, me zgjidhjet NVMe SSD ne arrijm\u00eb nj\u00eb rritje dhjet\u00ebfish t\u00eb performanc\u00ebs. Sidomos n\u00eb aspektin e koh\u00ebs s\u00eb aksesit n\u00eb t\u00eb dh\u00ebna. P\u00ebr shembull, me dy SSD Kingston DC1000M U.2 NVMe n\u00eb RAID 1 n\u00eb server ne do t\u00eb marrim 350,000 IOPS n\u00eb leximin e t\u00eb dh\u00ebnave t\u00eb rast\u00ebsishme dhe 75,000 IOPS n\u00eb shkrim. <\/p>\n

\"Ndajm\u00eb
\n
\nP\u00ebr sa i p\u00ebrket shpejt\u00ebsis\u00eb s\u00eb leximit sekondar, rezultatet do t\u00eb p\u00ebrputhen me karakteristikat e disqit \u2014 3200 MB\/s. Por, pasi t\u00eb dy NVMe SSD jan\u00eb n\u00eb gjendje pune, t\u00eb dh\u00ebnat mund t\u00eb lexohen prej tyre nj\u00ebkoh\u00ebsisht, duke e b\u00ebr\u00eb operacionin e leximit t\u00eb shpejt\u00eb. Nd\u00ebrsa shpejt\u00ebsia e shkrimit (e cila \u00ebsht\u00eb e deklaruar si 2000 MB\/s) do t\u00eb jet\u00eb m\u00eb e ngadalshme, sepse secila operacion shkrimi ekzekutohet dy her\u00eb. <\/p>\n

\"Ndajm\u00eb
\n
\nMasi RAID 1 \u00ebsht\u00eb perfekt p\u00ebr baza t\u00eb vogla t\u00eb dh\u00ebnash ose \u00e7do ambient tjet\u00ebr q\u00eb k\u00ebrkon q\u00ebndrueshm\u00ebri, por me kapacitet t\u00eb vog\u00ebl. Pasqyrimi i disqeve \u00ebsht\u00eb ve\u00e7an\u00ebrisht i dobish\u00ebm n\u00eb skenar\u00ebt e rikthimit nga krizat (performanca n\u00eb k\u00ebt\u00eb rast paksa p\u00ebrkeq\u00ebsohet), pasi siguron nj\u00eb 'reanimim' t\u00eb menj\u00ebhersh\u00ebm t\u00eb t\u00eb dh\u00ebnave t\u00eb r\u00ebnd\u00ebsishme n\u00ebse nj\u00eb nga disqet n\u00eb mas\u00eb d\u00ebshton. Por, pasi ky nivel mbrojtjeje k\u00ebrkon dyfishimin e kapacitetit p\u00ebr ruajtjen e nj\u00eb kopjeje pasqyr\u00eb t\u00eb t\u00eb dh\u00ebnave (p\u00ebr t\u00eb ruajtur 100 TB ne do t\u00eb kemi nevoj\u00eb p\u00ebr 200 TB hap\u00ebsir\u00eb), n\u00eb shum\u00eb sisteme korporative p\u00ebrdoren variante t\u00eb tjera m\u00eb ekonomike t\u00eb ruajtjes: RAID 5 dhe RAID 6.<\/p>\n

RAID 5 mbi baz\u00ebn e SSD Kingston dhe kontrolluesve Broadcom<\/h2>\n

\nP\u00ebr t\u00eb organizuar nj\u00eb mas\u00eb RAID t\u00eb nivelit t\u00eb pest\u00eb, ne do t\u00eb k\u00ebrkojm\u00eb t\u00eb pakt\u00ebn tre disqe, t\u00eb dh\u00ebnat mbi t\u00eb cilat alternohen (shkruhen rreth disqeve n\u00eb mas\u00eb), por nuk jan\u00eb t\u00eb dyfishuara. Gjat\u00eb organizimit t\u00eb tyre duhet t\u00eb merret parasysh struktura m\u00eb e komplikuar, sepse k\u00ebtu shfaqet koncepti i 'kontroll\u00ebsit t\u00eb paritetit'. N\u00ebn k\u00ebt\u00eb koncept kuptohet nj\u00eb funksion algebrik logjik XOR (ose 've\u00e7orja e p\u00ebrjashtimit'), i cili p\u00ebrcakton p\u00ebrdorimin e t\u00eb pakt\u00ebn tre disqeve n\u00eb mas\u00eb (maksimumi \u2013 32). N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, informatat mbi paritetin shkruhen mbi t\u00eb gjitha 'disk\u00ebt' n\u00eb mas\u00eb.<\/p>\n

\"Ndajm\u00eb
\n
\nP\u00ebr nj\u00eb mas\u00eb prej kat\u00ebr SSD SATA Kingston DC500R me nga 3.84 TB secili, ne do t\u00eb marrim 11.52 TB hap\u00ebsir\u00eb dhe 3.84 p\u00ebr kontroll\u00ebsat e paritetit. N\u00ebse bashkojm\u00eb n\u00eb nj\u00eb RAID t\u00eb nivelit t\u00eb pest\u00eb 16 NVMe disqe Kingston DC1000M U.2 me nj\u00eb kapacitet prej 7.68 TB - do t\u00eb kemi 115.2 TB me humbje 7.68 TB. Si\u00e7 mund ta shihni, sa m\u00eb shum\u00eb disqe, aq m\u00eb mir\u00eb n\u00eb rezultate. Edhe m\u00eb mir\u00eb sepse, sa m\u00eb shum\u00eb disqe n\u00eb RAID 5, aq m\u00eb e lart\u00eb \u00ebsht\u00eb performanca totale gjat\u00eb operacioneve t\u00eb shkrimit. Leximi lineare do t\u00eb arrij\u00eb nivelin e RAID 0.<\/p>\n

\"Ndajm\u00eb
\n
\nGrupi i disqeve RAID 5 ofron nj\u00eb kapacitet t\u00eb lart\u00eb kalimi (sidomos p\u00ebr skedar\u00ebt e m\u00ebdhenj) dhe redundanc\u00eb me humbje minimale t\u00eb fuqis\u00eb. Ky tip organizimi i mas\u00ebs p\u00ebrshtatet m\u00eb s\u00eb miri p\u00ebr rrjetet q\u00eb kryejn\u00eb shum\u00eb operacione t\u00eb vogla hyr\u00ebse-dal\u00ebse (I\/O) nj\u00ebkoh\u00ebsisht. Nd\u00ebrsa nuk rekomandohet ta p\u00ebrdorni p\u00ebr detyra q\u00eb k\u00ebrkojn\u00eb nj\u00eb num\u00ebr t\u00eb madh operacioneve shkrimi t\u00eb blloqeve t\u00eb vogla ose t\u00eb vogla.
\nKa edhe nj\u00eb nuanc\u00eb tjet\u00ebr: n\u00eb rast t\u00eb d\u00ebshtimit t\u00eb ndonj\u00eb NVMe disku, RAID 5 kalon n\u00eb modin e degradimit dhe d\u00ebshtimi i nj\u00eb tjet\u00ebr pajisjeje ruajt\u00ebse mund t\u00eb b\u00ebhet kritik p\u00ebr t\u00eb dh\u00ebnat e t\u00eb gjitha. N\u00eb rast t\u00eb d\u00ebshtimit t\u00eb nj\u00eb disku n\u00eb mas\u00ebn RAID, kontrolluesi RAID p\u00ebrdor informacionin mbi paritetin p\u00ebr t\u00eb rikrijuar t\u00eb gjitha t\u00eb dh\u00ebnat e humbura.<\/p>\n

RAID 10 mbi baz\u00ebn e SSD Kingston dhe kontrolluesve Broadcom<\/h2>\n

\nPra, RAID 0 na ofron nj\u00eb rritje t\u00eb dyfisht\u00eb t\u00eb shpejt\u00ebsis\u00eb dhe koh\u00ebs s\u00eb aksesit, nd\u00ebrsa RAID 1 siguron q\u00ebndrueshm\u00ebri. Idealisht do t\u00eb ishte t'i bashkonim, dhe k\u00ebtu vjen n\u00eb ndihm\u00eb RAID 10 (ose 1+0). 'Dhjet\u00ebshja' organizohet nga kat\u00ebr SSD SATA ose NVMe disqe (maksimumi \u2013 32) dhe iu n\u00ebnshtruar nj\u00eb mas\u00eb 'pasqyrimi', numri i disqeve n\u00eb t\u00eb cil\u00ebn gjithmon\u00eb duhet t\u00eb jet\u00eb shum\u00ebfish i kat\u00ebr. T\u00eb dh\u00ebnat n\u00eb k\u00ebt\u00eb mas\u00eb shkruhen p\u00ebrmes ndarjes n\u00eb blloqe fikse (si n\u00eb rastin e RAID 0) dhe alternohen midis disqeve, duke shp\u00ebrndar\u00eb kopjet midis 'disqeve' n\u00eb mas\u00ebn RAID 1. Dhe p\u00ebr shkak t\u00eb mund\u00ebsis\u00eb p\u00ebr qasje nj\u00ebkoh\u00ebsisht n\u00eb disa grupe disqesh, RAID 10 tregon nj\u00eb performanc\u00eb t\u00eb lart\u00eb.<\/p>\n

\"Ndajm\u00eb
\n
\nDuke RAID 10 \u00ebsht\u00eb n\u00eb gjendje t\u00eb shp\u00ebrndaj\u00eb t\u00eb dh\u00ebnat n\u00eb disa \u00e7ifte t\u00eb pasqyruara, do t\u00eb thot\u00eb se ai mund t\u00eb toleroj\u00eb d\u00ebshtimin e nj\u00eb disku n\u00eb \u00e7ift. Megjithat\u00eb, n\u00eb rastin e d\u00ebshtimit t\u00eb t\u00eb dy grupeve t\u00eb pasqyruara (dmth. t\u00eb kat\u00ebr disqeve), do t\u00eb ndodhte nj\u00eb humbje e pashmangshme e t\u00eb dh\u00ebnave. N\u00eb fund, ne gjithashtu fitojm\u00eb nj\u00eb q\u00ebndrushm\u00ebri t\u00eb mir\u00eb dhe besueshm\u00ebri. Por duhet t\u00eb kemi parasysh se, si RAID 1, matrica e nivelit t\u00eb dhjet\u00eb p\u00ebrdor vet\u00ebm gjysm\u00ebn e kapacitetit total, prandaj ajo \u00ebsht\u00eb nj\u00eb zgjidhje e shtrenjt\u00eb. Po ashtu, \u00ebsht\u00eb edhe e komplikuar p\u00ebr t'u konfiguruar. <\/p>\n

RAID 10 \u00ebsht\u00eb i p\u00ebrshtatsh\u00ebm p\u00ebr p\u00ebrdorim me depo t\u00eb dh\u00ebnash q\u00eb k\u00ebrkojn\u00eb 100% t\u00eb tep\u00ebrt e grupeve t\u00eb disqeve t\u00eb pasqyruara, si dhe nj\u00eb performanc\u00eb t\u00eb rritur I\/O t\u00eb RAID 0. Kjo \u00ebsht\u00eb zgjidhja m\u00eb e mir\u00eb p\u00ebr bazat e t\u00eb dh\u00ebnave me shkall\u00eb mesatare ose \u00e7do mjedis q\u00eb k\u00ebrkon nj\u00eb q\u00ebndrushm\u00ebri m\u00eb t\u00eb lart\u00eb se RAID 5.<\/p>\n

RAID 50 me SSD Kingston dhe kontrollet Broadcom<\/h2>\n

\nNj\u00eb matrice e kombinuar, e ngjashme me at\u00eb t\u00eb nivelit t\u00eb dhjet\u00eb, q\u00eb p\u00ebrb\u00ebn nj\u00eb matric\u00eb t\u00eb nivelit zero t\u00eb nd\u00ebrtuar nga matrica t\u00eb nivelit t\u00eb pest\u00eb. Si n\u00eb rastin e m\u00ebparshem, q\u00ebllimi kryesor i k\u00ebsaj matrice \u00ebsht\u00eb t\u00eb siguroj\u00eb nj\u00eb performanc\u00eb t\u00eb dyfishuar duke mbajtur besueshm\u00ebrin\u00eb e t\u00eb dh\u00ebnave n\u00eb matrica RAID 5. N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, RAID 50 ofron nj\u00eb performanc\u00eb t\u00eb rritur t\u00eb shkrimit dhe nj\u00eb mbrojtje m\u00eb t\u00eb mir\u00eb t\u00eb t\u00eb dh\u00ebnave, sesa RAID 5 standart n\u00eb rast d\u00ebshtimi t\u00eb disqit, dhe gjithashtu \u00ebsht\u00eb n\u00eb gjendje t\u00eb rikuperohet m\u00eb shpejt n\u00eb rast t\u00eb d\u00ebshtimit t\u00eb nj\u00ebrit prej disqeve.<\/p>\n

\"Ndajm\u00eb
\n
\nGrupi i disqeve RAID 50 ndan t\u00eb dh\u00ebnat n\u00eb blloqe m\u00eb t\u00eb vogla dhe pastaj i shp\u00ebrndan ato n\u00eb secil\u00ebn matrice RAID 5. Grupi i disqeve RAID 5, nga ana tjet\u00ebr, gjithashtu ndan t\u00eb dh\u00ebnat n\u00eb blloqe m\u00eb t\u00eb vogla, llogarit paritetin, kryen operacionin logjik OR p\u00ebr blloqet, dhe pastaj kryen operacione shkrimi n\u00eb blloqet e t\u00eb dh\u00ebnave dhe n\u00eb kontrollin e paritetit p\u00ebr secilin disk n\u00eb grupin e disqeve.<\/p>\n

Dhe, megjith\u00ebse performanca patjet\u00ebr q\u00eb zvog\u00eblohet n\u00eb rast d\u00ebshtimi t\u00eb nj\u00ebrit prej disqeve, kjo nuk \u00ebsht\u00eb aq e r\u00ebnd\u00ebsishme sa n\u00eb matrica RAID 5, pasi nj\u00eb d\u00ebshtim ndikon vet\u00ebm n\u00eb nj\u00eb nga matrica, duke l\u00ebn\u00eb tjetr\u00ebn plot\u00ebsisht funksionale. N\u00eb t\u00eb v\u00ebrtet\u00eb, RAID 50 mund t\u00eb p\u00ebrballoj\u00eb deri n\u00eb tet\u00eb d\u00ebshtime HDD\/SSD\/NVMe, n\u00ebse \u00e7do 'disk' q\u00eb ka d\u00ebshtuar \u00ebsht\u00eb n\u00eb nj\u00eb matrice t\u00eb ve\u00e7ant\u00eb RAID 5.<\/p>\n

\"Ndajm\u00eb
\n
\nRAID 50 \u00ebsht\u00eb m\u00eb s\u00eb miri p\u00ebr aplikacionet q\u00eb k\u00ebrkojn\u00eb nj\u00eb besueshm\u00ebri t\u00eb lart\u00eb dhe q\u00eb duhet t\u00eb p\u00ebrpunojn\u00eb nj\u00eb num\u00ebr t\u00eb madh k\u00ebrkesash duke mbajtur nj\u00eb shpejt\u00ebsi t\u00eb lart\u00eb t\u00eb transferimit t\u00eb t\u00eb dh\u00ebnave dhe nj\u00eb kosto m\u00eb t\u00eb ul\u00ebt t\u00eb disqeve sesa n\u00eb matrica RAID 10. Megjithat\u00eb, p\u00ebr shkak se p\u00ebr konfigurimin e nj\u00eb matrice RAID 50 ne k\u00ebrkojm\u00eb t\u00eb pakt\u00ebn gjasht\u00eb disqe, kostoja nuk e p\u00ebrjashton plot\u00ebsisht si faktor. Nj\u00eb nga disavantazhet e RAID 50 \u00ebsht\u00eb se, ashtu si RAID 5, i nevojitet nj\u00eb kontrollues i komplikuar: si e p\u00ebrmendur m\u00eb par\u00eb<\/a><\/noindex> n\u00eb artikullin e kaluar MegaRAID 9460-16i<\/a><\/noindex> nga Broadcom.<\/p>\n

Vlen t\u00eb p\u00ebrmendet gjithashtu se RAID 50 ka m\u00eb pak hap\u00ebsir\u00eb t\u00eb p\u00ebrdorshme t\u00eb diskut se sa RAID 5, p\u00ebr shkak t\u00eb buxhetit t\u00eb kapacitetit p\u00ebr ruajtjen e t\u00eb dh\u00ebnave t\u00eb kontrollit t\u00eb paritetit. Megjithat\u00eb, ai ka akoma m\u00eb shum\u00eb hap\u00ebsir\u00eb t\u00eb dobishme se nivelet e tjera t\u00eb RAID, ve\u00e7an\u00ebrisht ato q\u00eb p\u00ebrdorin pasqyrimin. Me nj\u00eb k\u00ebrkes\u00eb minimale prej gjasht\u00eb disqesh, RAID 50 mund t\u00eb jet\u00eb nj\u00eb opsion i shtrenjt\u00eb, por hap\u00ebsira e shtuar e diskut justifikon shpenzimet, duke mbrojtur t\u00eb dh\u00ebnat e korporat\u00ebs. Ky tip matrice rekomandohet p\u00ebr pun\u00ebn me t\u00eb dh\u00ebna q\u00eb k\u00ebrkojn\u00eb ruajtje shum\u00eb t\u00eb besueshme, frekuenca t\u00eb larta k\u00ebrkesash, shpejt\u00ebsi t\u00eb lart\u00eb transferimi dhe kapacitet t\u00eb madh p\u00ebr ruajtje.<\/p>\n

RAID 6 dhe RAID 60: p\u00ebr ta ne ashtu si\u00e7 nuk harrojm\u00eb<\/h2>\n

\nDuke qen\u00eb se fol\u00ebm p\u00ebr matrica t\u00eb nivelit t\u00eb pest\u00eb dhe t\u00eb pes\u00ebdhjet\u00eb, do ishte m\u00ebkat t\u00eb mos p\u00ebrmendim gjithashtu llojet e tjera t\u00eb organizimit t\u00eb matriceve si RAID 6 dhe RAID 60.<\/p>\n

\"Ndajm\u00eb
\n
\nPerformanca e RAID 6 \u00ebsht\u00eb e ngjashme me at\u00eb t\u00eb RAID 5, por k\u00ebtu, t\u00eb pakt\u00ebn dy disqe dor\u00ebzohen p\u00ebr kontrollin e paritetit, \u00e7ka lejon matrica t\u00eb durojn\u00eb d\u00ebshtimin e dy disqeve pa humbje t\u00eb dh\u00ebnash (n\u00eb RAID 5 kjo situat\u00eb \u00ebsht\u00eb shum\u00eb e pap\u00ebrshtatshme). Kjo siguron nj\u00eb besueshm\u00ebri m\u00eb t\u00eb lart\u00eb. T\u00eb gjitha t\u00eb tjerat jan\u00eb t\u00eb nj\u00ebjta, si n\u00eb matrica t\u00eb nivelit t\u00eb pest\u00eb: n\u00eb rast d\u00ebshtimi t\u00eb nj\u00eb ose dy disqeve, kontroluesi RAID p\u00ebrdor blloqet e paritetit p\u00ebr t\u00eb riprodhuar t\u00eb gjith\u00eb informacionin e munguar. N\u00eb rast d\u00ebshtimi t\u00eb dy disqeve, rikuperimi nuk ndodh menj\u00ebher\u00eb: fillimisht rikuperohet disku i par\u00eb, pastaj ai i dyt\u00eb. K\u00ebshtu, realizohen dy operacione t\u00eb rikuperimit t\u00eb t\u00eb dh\u00ebnave.<\/p>\n

\"Ndajm\u00eb
\n
\nNuk \u00ebsht\u00eb e v\u00ebshtir\u00eb t\u00eb merren vesh se, n\u00ebse RAID 50 \u00ebsht\u00eb nj\u00eb masiv i nivelit zero i masiv\u00ebve t\u00eb nivelit t\u00eb pest\u00eb, at\u00ebher\u00eb RAID 60 \u00ebsht\u00eb nj\u00eb masiv i nivelit zero i masiv\u00ebve t\u00eb nivelit t\u00eb gjasht\u00eb, p\u00ebr t\u00eb cilat sapo fol\u00ebm. Kjo do t\u00eb thot\u00eb se kjo organizat\u00eb e ruajtjes RAID lejon q\u00eb t\u00eb p\u00ebrballoj\u00eb humbjen e dy SSD n\u00eb \u00e7do grup t\u00eb pajisjeve RAID 6. Parimi i funksionimit \u00ebsht\u00eb i ngjash\u00ebm me at\u00eb q\u00eb p\u00ebrshkruam n\u00eb seksionin p\u00ebr RAID 50, por numri i defekteve q\u00eb mund t\u00eb p\u00ebrballoj\u00eb masivi i nivelit t\u00eb gjasht\u00eb rritet nga 8 n\u00eb 16 pajisje. Zakonisht, k\u00ebto masa p\u00ebrdoren p\u00ebr sh\u00ebrbimin online t\u00eb klient\u00ebve, i cili k\u00ebrkon q\u00ebndrueshm\u00ebri t\u00eb lart\u00eb ndaj gabimeve.<\/p>\n

Po p\u00ebrmbledhim:<\/h2>\n

\nMegjith\u00ebse pasqyra ofron nj\u00eb q\u00ebndrueshm\u00ebri m\u00eb t\u00eb madhe se RAID 50\/60, ajo gjithashtu k\u00ebrkon shum\u00eb m\u00eb tep\u00ebr hap\u00ebsir\u00eb. Duke qen\u00eb se sasia e t\u00eb dh\u00ebnave dyfishohet, n\u00eb fakt merrni vet\u00ebm 50% t\u00eb kapacitetit total t\u00eb disqeve t\u00eb instaluara n\u00eb server p\u00ebr regjistrimin dhe ruajtjen e informacionit. Zgjedhja midis RAID 50\/60 dhe RAID 10, shum\u00eb t\u00eb ngjar\u00eb do t\u00eb varet nga buxhetet e disponueshme, kapaciteti i serverit dhe nevojat tuaja p\u00ebr mbrojtjen e t\u00eb dh\u00ebnave. Nd\u00ebrkoh\u00eb, kostoja del n\u00eb plan t\u00eb par\u00eb kur flasim p\u00ebr zgjidhjet SSD (qoft\u00eb t\u00eb klas\u00ebs p\u00ebr sip\u00ebrmarrje, ose t\u00eb konsumator\u00ebve).<\/p>\n

Jo m\u00eb pak e r\u00ebnd\u00ebsishme \u00ebsht\u00eb se tani e dim\u00eb sakt\u00ebsisht \u2013 RAID i bazuar n\u00eb SSD \u00ebsht\u00eb nj\u00eb zgjidhje mjaft e sigurt dhe nj\u00eb praktik\u00eb e zakonshme p\u00ebr bizneset moderne. Po ashtu, p\u00ebr p\u00ebrdorim n\u00eb sht\u00ebpi ka kuptim kalimi n\u00eb NVMe n\u00ebse buxhetet lejojn\u00eb. Dhe n\u00ebse ju mbetet nj\u00eb pyetje, pse \u00ebsht\u00eb e nevojshme e gjith\u00eb kjo, kthehuni n\u00eb fillim t\u00eb artikullit \u2013 ne tashm\u00eb i kemi dh\u00ebn\u00eb p\u00ebrgjigje t\u00eb detajuara p\u00ebr t\u00eb.<\/p>\n

Ky artikull \u00ebsht\u00eb p\u00ebrgatitur me mb\u00ebshtetje nga koleg\u00ebt tan\u00eb nga Broadcom, t\u00eb cil\u00ebt ofrojn\u00eb kontrolluesit e tyre p\u00ebr inxhinier\u00ebt e Kingston p\u00ebr testim me disqet SATA\/SAS\/NVMe t\u00eb klas\u00ebs korporative. Fal\u00eb k\u00ebtij simbioze miq\u00ebsore, klient\u00ebt nuk kan\u00eb arsye t\u00eb dyshojn\u00eb n\u00eb besueshm\u00ebrin\u00eb dhe stabilitetin e funksionimit t\u00eb disqeve Kingston me kontrollues HBA dhe RAID t\u00eb prodhuar. Broadcom<\/a><\/noindex>.<\/p>\n

Informacione t\u00eb m\u00ebtejshme mbi produktet Kingston mund t\u00eb gjenden n\u00eb faqen zyrtare<\/a><\/noindex> t\u00eb kompanis\u00eb.
\n
Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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