{"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":"Po ndajm\u00eb p\u00ebrvoj\u00ebn ton\u00eb se si duken SSD-t\u00eb n\u00eb kuad\u00ebr t\u00eb RAID-it dhe se cili nivel i masivit \u00ebsht\u00eb m\u00eb i favorsh\u00ebm.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00eb n\u00eb materialin e kaluar<\/a><\/noindex> ne kemi shqyrtuar tashm\u00eb \u00e7\u00ebshtjen \"A \u00ebsht\u00eb i aplikuar RAID n\u00eb SSD\" me shembuj t\u00eb nj\u00ebsive Kingston, por e kemi b\u00ebr\u00eb k\u00ebt\u00eb vet\u00ebm n\u00eb kuad\u00ebr t\u00eb nivelit zero. N\u00eb k\u00ebt\u00eb artikull do t\u00eb shqyrtojm\u00eb opsionet e p\u00ebrdorimit t\u00eb zgjidhjeve profesionale dhe sht\u00ebpiake NVMe n\u00eb llojet m\u00eb t\u00eb popullarizuara t\u00eb grupeve RAID dhe do t'ju tregojm\u00eb p\u00ebr kompatibilitetin e kontroler\u00ebve Broadcom<\/a><\/noindex> me nj\u00ebsit\u00eb Kingston.<\/p>\n

\"Po
\n<\/a><\/noindex><\/p>\n

Pse nevojitet RAID n\u00eb SSD?<\/h2>\n

\nP\u00ebrpar\u00ebsit\u00eb e grupeve t\u00eb ruajtjes bazuar n\u00eb SSD krahasuar me ato bazuar n\u00eb disqe t\u00eb rrepta p\u00ebrfshijn\u00eb reduktimin e koh\u00ebs s\u00eb aksesit n\u00eb t\u00eb dh\u00ebna dhe performanc\u00eb superior n\u00eb operacionet e leximit\/shkrimit. Megjithat\u00eb, p\u00ebr performanc\u00ebn ideale t\u00eb RAID-it t\u00eb bazuar n\u00eb SSD k\u00ebrkohet nj\u00eb kombinim optimal i procesor\u00ebve, cache-it, softuerit dhe harduerit. Kur k\u00ebto faktor\u00eb punojn\u00eb s\u00eb bashku n\u00eb m\u00ebnyr\u00eb ideale, nj\u00eb grup RAID nga SSD mund t\u00eb tejkaloj\u00eb ndjesh\u00ebm nj\u00eb konfigurim p\u00ebrkat\u00ebs q\u00eb p\u00ebrdor HDD tradicionale.<\/p>\n

Nj\u00eb SSD tipik konsumon m\u00eb pak energji se disqet e rrepta, prandaj, kur kombinohen shum\u00eb nj\u00ebsit\u00eb SSD n\u00eb nj\u00eb grup RAID, kursimi i energjis\u00eb n\u00eb krahasim me nj\u00eb grup RAID nga HDD-t\u00eb mund t\u00eb \u00e7oj\u00eb gjithashtu n\u00eb ulje t\u00eb kostove n\u00eb faturat e energjis\u00eb elektrike t\u00eb kompanis\u00eb.<\/p>\n

Megjithat\u00eb, SSD RAID ka kufizime dhe disavantazhe: n\u00eb ve\u00e7anti, \u00e7mimi m\u00eb i lart\u00eb p\u00ebr gigabajt hap\u00ebsir\u00eb krahasuar me disqet e rrepta t\u00eb kapacitetit t\u00eb ngjash\u00ebm. Koha e pun\u00ebs s\u00eb memorjes flash para se t\u00eb d\u00ebshtoj\u00eb \u00ebsht\u00eb e kufizuar nga numri i cikleve t\u00eb rip\u00ebrshkrimit. Kjo do t\u00eb thot\u00eb se nj\u00ebsit\u00eb SSD kan\u00eb nj\u00eb jet\u00eb t\u00eb caktuar, e cila varet nga shfryt\u00ebzimi: sa m\u00eb shpesh informatat t\u00eb rip\u00ebrshkruhen mbi to, aq m\u00eb shpejt nj\u00eb nj\u00ebs i till\u00eb mund t\u00eb d\u00ebshtoj\u00eb. Nga ana tjet\u00ebr, nj\u00ebsit\u00eb SSD t\u00eb kompanive kan\u00eb nj\u00eb jet\u00eb t\u00eb konsiderueshme, t\u00eb krahasueshme me disqet mekanike.<\/p>\n

Si e kalojn\u00eb SSD Kingston n\u00eb m\u00ebnyr\u00ebn RAID me kontroler\u00ebt Broadcom<\/h2>\n

\nN\u00eb shfaqjen e SSD-ve, strukturat RAID kishin shum\u00eb nuanca. Kjo p\u00ebrfshinte p\u00ebrdorimin e disqeve HDD m\u00eb pak t\u00eb besuesh\u00ebm. Disqet ngurt\u00eb jan\u00eb shum\u00eb m\u00eb t\u00eb besuesh\u00ebm se homolog\u00ebt e tyre me baz\u00eb magnetike. 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 reduktuar n\u00eb zero. D\u00ebmtimi i disqeve ngurt\u00eb p\u00ebr shkak t\u00eb skokjeve t\u00eb tensionit gjithashtu \u00ebsht\u00eb shum\u00eb i pak\u00ebt, duke marr\u00eb parasysh se n\u00eb nivelin e nj\u00eb PC sht\u00ebpiak dhe \u00e7do server ju mbrojn\u00eb UPS, filtre rrjete dhe madje edhe burimi i energjis\u00eb.<\/p>\n

Megjithat\u00eb, disqet ngurt\u00eb kan\u00eb nj\u00eb tjet\u00ebr avantazh t\u00eb r\u00ebnd\u00ebsish\u00ebm: edhe n\u00ebse celulat e memories konsumohen nga shkruajta \u2013 mund t\u00eb b\u00ebhet leximi i t\u00eb dh\u00ebnave prej tyre, por n\u00eb rast t\u00eb d\u00ebmtimit t\u00eb disku magnetik \u2013 fatkeq\u00ebsisht, jo.<\/p>\n

\"Po
\n
\nSot, p\u00ebrdorimi i zgjidhjeve SSD n\u00eb RAIDE t\u00eb niveleve t\u00eb ndryshme \u00ebsht\u00eb nj\u00eb praktik\u00eb krejt normale. E r\u00ebnd\u00ebsishme \u00ebsht\u00eb t\u00eb zgjidhni disqe ngurt\u00eb t\u00eb duhur, latenca e t\u00eb cilave \u00ebsht\u00eb minimale. Gjithashtu, idealisht duhet t\u00eb p\u00ebrdoren SSD nga i nj\u00ebjti prodhues dhe nga i nj\u00ebjti model, n\u00eb m\u00ebnyr\u00eb q\u00eb t\u00eb mos krijohet nj\u00eb p\u00ebrzierje e disqeve q\u00eb mb\u00ebshtesin lloje t\u00eb ndryshme ngarkesash dhe t\u00eb nd\u00ebrtuara mbi baza t\u00eb ndryshme memories, kontrolluesish dhe teknologjish t\u00eb tjera. Pra, n\u00ebse kemi vendosur t\u00eb blejm\u00eb kat\u00ebr ose 16 NVMe SSD nga kompania Kingston p\u00ebr t\u00eb krijuar nj\u00eb RAID, beter t\u00eb gjitha ato t\u00eb jen\u00eb nga nj\u00eb seri dhe gam\u00eb modeli. <\/p>\n

Dhe, n\u00eb artikullin e kaluar<\/a><\/noindex> Nuk ishte rast\u00ebsi q\u00eb cituam kontrolluesit Broadcom kur flisnim p\u00ebr NVMe SSD nga Kingston. Arsyeja \u00ebsht\u00eb se n\u00eb manualet e k\u00ebtyre pajisjeve menj\u00ebher\u00eb p\u00ebrmenden disqet e p\u00ebrputhshme (duke p\u00ebrfshir\u00eb zgjidhjet nga prodhuesi i m\u00ebsip\u00ebrm amerikan t\u00eb SSD-ve), me t\u00eb cil\u00ebt kontrolluesi do t\u00eb funksionoj\u00eb pa probleme. Kjo informacion duhet t\u00eb merret parasysh kur zgjidhet kombimin \"kontrollues-SSD\" p\u00ebr RAID.<\/p>\n

Ne po analizojm\u00eb pun\u00ebn e SSD Kingston n\u00eb llojet m\u00eb t\u00eb njohura t\u00eb RAID \u2013 \u201c1\u201d, \u201c5\u201d, \u201c10\u201d, \u201c50\u201d<\/h2>\n

\nPra, niveli \u201czero\u201d i RAID nuk siguron redundant\u00ebsin\u00eb e t\u00eb dh\u00ebnave, por vet\u00ebm rrit performanc\u00ebn. RAID 0 nuk ofron asnj\u00eb mbrojtje t\u00eb t\u00eb dh\u00ebnave, prandaj nuk do ta shqyrtojm\u00eb n\u00eb kontekstin e sektorit korporativ. RAID 1, nga ana tjet\u00ebr, ofron plot\u00ebsisht redundant\u00ebsi, por vet\u00ebm nj\u00eb rritje t\u00eb skrom\u00eb t\u00eb performanc\u00ebs, prandaj duhet t\u00eb shqyrtohet n\u00eb rastet kur rritja e performanc\u00ebs nuk \u00ebsht\u00eb nj\u00eb faktor thelb\u00ebsor n\u00eb nd\u00ebrtimin e nj\u00eb skenari RAID nga SSD-t\u00eb.<\/p>\n

RAID 1 me SSD Kingston dhe kontrollet Broadcom<\/h2>\n

\nPra, RAID-i i nivelit t\u00eb par\u00eb mbi baz\u00ebn e kontrollit 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 plot\u00ebsisht redundant\u00ebsi. N\u00ebse me p\u00ebrdorimin e HDD-ve tradicionale shpejt\u00ebsia e shkruarjes dhe leximet e t\u00eb dh\u00ebnave mbetej n\u00eb nivelin e atij HDD, me zgjidhjet NVMe SSD fitojm\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 serveri do t\u00eb arrijm\u00eb 350,000 IOPS n\u00eb leximin e t\u00eb dh\u00ebnave t\u00eb rast\u00ebsishme dhe 75,000 IOPS n\u00eb shkruajtur. <\/p>\n

\"Po
\n
\nSa i p\u00ebrket shpejt\u00ebsis\u00eb se leximet sekondar, rezultatet do t\u00eb korrespondojn\u00eb me karakteristikat e disqes \u2014 3200 MB\/s. Por, pasi t\u00eb dy SSD-t\u00eb NVMe jan\u00eb n\u00eb gjendje pune, t\u00eb dh\u00ebnat mund t\u00eb lexohen nga ata n\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, \u00e7ka b\u00ebn q\u00eb operacionet e leximit t\u00eb jen\u00eb mjaft t\u00eb shpejta. Por, shpejt\u00ebsia e shkrujes (e deklaruar \u00ebsht\u00eb 2000 MB\/s) do t\u00eb jet\u00eb m\u00eb e ngadalshme, pasi \u00e7do operacion shkruaje realizohet dy her\u00eb. <\/p>\n

\"Po
\n
\nGrupi RAID 1 \u00ebsht\u00eb ideal p\u00ebr baza t\u00eb vogla t\u00eb dh\u00ebnash ose ndonj\u00eb ambient tjet\u00ebr q\u00eb k\u00ebrkon q\u00ebndrushm\u00ebri, por me kapacitet t\u00eb vog\u00ebl. Pasqyra e disk\u00ebve \u00ebsht\u00eb ve\u00e7an\u00ebrisht e dobishme n\u00eb skenar\u00ebt e rikuperimit t\u00eb fatkeq\u00ebsive (performanca paksa p\u00ebrkeq\u00ebsohet), pasi ofron nj\u00eb \u201crikthim\u201d t\u00eb menj\u00ebhersh\u00ebm t\u00eb t\u00eb dh\u00ebnave t\u00eb r\u00ebnd\u00ebsishme, n\u00ebse ndonj\u00eb nga disqet n\u00eb grup d\u00ebshton. Por, pasi ky nivel mbrojtjeje k\u00ebrkon dyfishimin e kapacitetit p\u00ebr t\u00eb ruajtur pasqyr\u00ebn e t\u00eb dh\u00ebnave (p\u00ebr t\u00eb ruajtur 100 TB nevojitet 200 TB hap\u00ebsir\u00eb), n\u00eb shum\u00eb sisteme korporative p\u00ebrdoren variante m\u00eb ekonomike t\u00eb ruajtjes: RAID 5 dhe RAID 6.<\/p>\n

RAID 5 me SSD Kingston dhe kontrollet Broadcom<\/h2>\n

\nP\u00ebr t\u00eb krijuar nj\u00eb grup RAID t\u00eb nivelit t\u00eb pest\u00eb, na duhen t\u00eb pakt\u00ebn tre ndihm\u00ebs, t\u00eb cil\u00ebt shkruhen n\u00eb m\u00ebnyr\u00eb ciklike (t\u00eb dh\u00ebnat shkruhen n\u00eb \u00e7do ndihm\u00ebs n\u00eb grup), por nuk kopjohen. Gjat\u00eb organizimit t\u00eb tyre, duhet t\u00eb merret parasysh struktura e tyre m\u00eb e komplikuar, pasi k\u00ebtu hyn koncepti i \"kontrollit t\u00eb shum\u00ebs\" (ose \"paritetit\"). Ky koncept n\u00ebnkupton nj\u00eb funksion logjik algebrik XOR (ose \"ose p\u00ebrjashtuese\"), i cili dikton p\u00ebrdorimin e t\u00eb pakt\u00ebn tre ndihm\u00ebs n\u00eb grup (maksimumi \u2013 32). Informacioni mbi paritetin shkruhet n\u00eb t\u00eb gjitha \"disk\u00ebt\" n\u00eb grup.<\/p>\n

\"Po
\n
\nP\u00ebr nj\u00eb grup prej kat\u00ebr SSD ndihm\u00ebs SATA Kingston DC500R me kapacitet prej 3.84 TB secili, ne do t\u00eb marrim 11.52 TB hap\u00ebsir\u00eb dhe 3.84 p\u00ebr kontrollin e shum\u00ebve. Dhe n\u00ebse bashkojm\u00eb n\u00eb RAID t\u00eb nivelit t\u00eb pest\u00eb 16 ndihm\u00ebs NVMe Kingston DC1000M U.2 me kapacitet 7.68 TB \u2014 do t\u00eb fitojm\u00eb 115.2 TB me humbjen e 7.68 TB. Si\u00e7 e shihni, sa m\u00eb shum\u00eb ndihm\u00ebs t\u00eb kemi, aq m\u00eb mir\u00eb \u00ebsht\u00eb n\u00eb fund. \u00cbsht\u00eb edhe m\u00eb mir\u00eb sepse, sa m\u00eb shum\u00eb ndihm\u00ebs q\u00eb kemi n\u00eb RAID 5, aq m\u00eb e lart\u00eb \u00ebsht\u00eb performanca totale n\u00eb operacionet e shkruar. Leximi linear do t\u00eb arrij\u00eb nivelin e RAID 0.<\/p>\n

\"Po
\n
\nGrupi i disqeve RAID 5 ofron nj\u00eb band\u00eb t\u00eb lart\u00eb kalimi (sidomos p\u00ebr skedar\u00eb t\u00eb m\u00ebdhenj) dhe mbrojtje me humbje minimale t\u00eb energjis\u00eb. Ky lloj organizimi i grupit \u00ebsht\u00eb m\u00eb i p\u00ebrshtatsh\u00ebm p\u00ebr rrjetet q\u00eb kryejn\u00eb shum\u00eb operacione t\u00eb vogla hyr\u00ebse-dal\u00ebse (I\/O) n\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb. Por nuk \u00ebsht\u00eb e rekomanduar ta p\u00ebrdorim p\u00ebr detyra q\u00eb k\u00ebrkojn\u00eb shum\u00eb operacione shkruese t\u00eb blloqeve t\u00eb vogla ose t\u00eb vogla.
\nKa edhe nj\u00eb nuanc\u00eb tjet\u00ebr: n\u00eb rast se nj\u00eb nga ndihm\u00ebsit NVMe d\u00ebshton, RAID 5 kalon n\u00eb nj\u00eb gjendje degraduese dhe d\u00ebshtimi i nj\u00eb pajisjeje tjet\u00ebr ruajtjeje mund t\u00eb b\u00ebhet kritik p\u00ebr t\u00eb gjith\u00eb t\u00eb dh\u00ebnat. N\u00eb rast se nj\u00eb ndihm\u00ebs n\u00eb grupin RAID d\u00ebshton, kontrolluesi RAID p\u00ebrdor informacionin mbi paritetin p\u00ebr t\u00eb rikrijuar t\u00eb gjitha t\u00eb dh\u00ebnat q\u00eb mungojn\u00eb.<\/p>\n

RAID 10 bazuar n\u00eb SSD Kingston dhe kontrolluesit Broadcom<\/h2>\n

\nPra, RAID 0 na jep nj\u00eb rritje dyfish t\u00eb shpejt\u00ebsis\u00eb dhe koh\u00ebs s\u00eb qasjes, nd\u00ebrsa RAID 1 garanton besueshm\u00ebri. Idealisht, ne do t\u00eb donim t'i kombinojm\u00eb ato, dhe k\u00ebtu vjen n\u00eb ndihm\u00eb RAID 10 (ose 1+0). 'Dhjet\u00ebshja' nd\u00ebrtohet nga kat\u00ebr SSD SATA ose NVMe (maksimumi - 32) dhe p\u00ebrfshin nj\u00eb grumbull 'pasqyre', numri i disqeve n\u00eb t\u00eb cilin gjithmon\u00eb duhet t\u00eb jet\u00eb nj\u00eb shum\u00ebshtes\u00eb e kat\u00ebr. T\u00eb dh\u00ebnat n\u00eb k\u00ebt\u00eb grumbull shkruhen p\u00ebrmes ndarjes n\u00eb blloqe t\u00eb fiksuara (si n\u00eb rastin e RAID 0) dhe alternimit midis disqeve, duke shp\u00ebrndar\u00eb kopjet midis 'disqeve' n\u00eb grumbullin RAID 1. Dhe p\u00ebr shkak t\u00eb mund\u00ebsis\u00eb p\u00ebr qasje t\u00eb nj\u00ebkohshme n\u00eb disa grupe disqesh, RAID 10 tregon nj\u00eb performanc\u00eb t\u00eb lart\u00eb.<\/p>\n

\"Po
\n
\nDuke qen\u00eb se RAID 10 \u00ebsht\u00eb n\u00eb gjendje t\u00eb shp\u00ebrndaj\u00eb t\u00eb dh\u00ebnat mbi disa pal\u00eb pasqyrash, kjo n\u00ebnkupton se 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 pal\u00ebve pasqyr\u00eb (dmth t\u00eb kat\u00ebr disqeve), do t\u00eb ndodhi nj\u00eb humbje e pakthyeshme e t\u00eb dh\u00ebnave. Si rezultat, ne gjithashtu marrim nj\u00eb q\u00ebndrueshm\u00ebri t\u00eb mir\u00eb dhe besueshm\u00ebri. Por \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb p\u00ebrmendet se, si RAID 1, grumbulli i nivelit t\u00eb dhjet\u00eb p\u00ebrdor vet\u00ebm gjysm\u00ebn e kapacitetit total, k\u00ebshtu q\u00eb \u00ebsht\u00eb nj\u00eb zgjidhje e shtrenjt\u00eb. Dhe gjithashtu \u00ebsht\u00eb 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% te mbivendosjes s\u00eb grupeve t\u00eb disqeve pasqyra, si dhe performanc\u00eb t\u00eb p\u00ebrmir\u00ebsuar I\/O t\u00eb RAID 0. Kjo \u00ebsht\u00eb zgjidhja m\u00eb e mir\u00eb p\u00ebr bazat e t\u00eb dh\u00ebnave me p\u00ebrmasa t\u00eb mesme ose \u00e7do mjedis q\u00eb k\u00ebrkon nj\u00eb q\u00ebndrueshm\u00ebri m\u00eb t\u00eb lart\u00eb se ajo e RAID 5.<\/p>\n

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

\nNj\u00eb grumbull i kombinuar, i ngjash\u00ebm me RAID-in e nivelit t\u00eb dhjet\u00eb, q\u00eb p\u00ebrb\u00ebhet nga nj\u00eb grumbull i nivelit zero, e krijuar nga grumbuj t\u00eb nivelit t\u00eb pest\u00eb. Si\u00e7 \u00ebsht\u00eb rasti i m\u00ebparsh\u00ebm, q\u00ebllimi kryesor i k\u00ebtij grumbulli \u00ebsht\u00eb t\u00eb arrihet nj\u00eb dyfishim i performanc\u00ebs duke ruajtur besueshm\u00ebrin\u00eb e t\u00eb dh\u00ebnave n\u00eb grumbujt RAID 5. N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, RAID 50 ofron nj\u00eb performanc\u00eb t\u00eb p\u00ebrmir\u00ebsuar shkrimi dhe mbrojtje m\u00eb t\u00eb mir\u00eb t\u00eb t\u00eb dh\u00ebnave, sesa RAID 5 standard n\u00eb rastin e d\u00ebshtimit t\u00eb nj\u00eb disku, si dhe \u00ebsht\u00eb n\u00eb gjendje t\u00eb rikuperohet m\u00eb shpejt n\u00eb rastin e d\u00ebshtimit t\u00eb nj\u00eb prej disqeve.<\/p>\n

\"Po
\n
\nGrupi i disk\u00ebve RAID 50 ndan t\u00eb dh\u00ebnat n\u00eb blloqe m\u00eb t\u00eb vogla dhe pastaj i shp\u00ebrndan ato n\u00eb \u00e7do grup RAID 5. Grupi i disk\u00ebve 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 realizon operacionet e shkruajtes n\u00eb blloqet e t\u00eb dh\u00ebnave dhe kontrollit t\u00eb paritetit p\u00ebr secilin disk n\u00eb grupin e disk\u00ebve.<\/p>\n

Edhe pse performanca ndihmon n\u00eb ulje n\u00eb rastin e d\u00ebshtimit t\u00eb nj\u00ebrit prej memorjeve, kjo nuk \u00ebsht\u00eb aq thelb\u00ebsore sa n\u00eb grupin RAID 5, pasi nj\u00eb d\u00ebshtim ndikon vet\u00ebm n\u00eb nj\u00eb nga grupet, duke l\u00ebn\u00eb tjetrin plot\u00ebsisht funksional. N\u00eb fakt, RAID 50 mund t\u00eb p\u00ebrballoj\u00eb deri n\u00eb tet\u00eb d\u00ebshtime HDD\/SSD\/NVMe, n\u00ebse \u00e7do disk i d\u00ebshtuar ndodhet n\u00eb nj\u00eb grup t\u00eb ve\u00e7ant\u00eb RAID 5.<\/p>\n

\"Po
\n
\nRAID 50 \u00ebsht\u00eb m\u00eb mir\u00eb t\u00eb p\u00ebrdoret p\u00ebr aplikacione q\u00eb k\u00ebrkojn\u00eb besueshm\u00ebri t\u00eb lart\u00eb dhe q\u00eb duhet t\u00eb p\u00ebrballen me nj\u00eb num\u00ebr t\u00eb madh k\u00ebrkesash, duke ruajtur 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 se n\u00eb grupin RAID 10. Megjithat\u00eb, pasi p\u00ebr t\u00eb konfiguruar nj\u00eb grup RAID 50 nevojiten t\u00eb pakt\u00ebn gjasht\u00eb memorje, kostoja nuk \u00ebsht\u00eb plot\u00ebsisht e p\u00ebrjashtuar si nj\u00eb faktor. Nj\u00eb nga disavantazhet e RAID 50 \u00ebsht\u00eb se, si\u00e7 \u00ebsht\u00eb RAID 5, k\u00ebrkon nj\u00eb kontrollues t\u00eb komplikuar: si ai i p\u00ebrmendur m\u00eb par\u00eb. q\u00eb e p\u00ebrmend\u00ebm m\u00eb par\u00eb<\/a><\/noindex> n\u00eb artikullin e kaluar MegaRAID 9460-16i<\/a><\/noindex> nga Broadcom.<\/p>\n

Duhet t\u00eb theksohet gjithashtu se RAID 50 ka m\u00eb pak hap\u00ebsir\u00eb t\u00eb p\u00ebrdorur t\u00eb diskut se RAID 5, p\u00ebr shkak t\u00eb alokimit t\u00eb kapacitetit p\u00ebr mbajtjen e regjistrimeve t\u00eb kontrollit t\u00eb paritetit. Megjithat\u00eb, ai ende ka m\u00eb shum\u00eb hap\u00ebsir\u00eb t\u00eb dobishme se nivelet e tjera RAID, ve\u00e7an\u00ebrisht ato q\u00eb p\u00ebrdorin pasqyra. Me nj\u00eb k\u00ebrkes\u00eb minimale prej gjasht\u00eb disk\u00ebsh, RAID 50 mund t\u00eb jet\u00eb nj\u00eb opsion i kushtuesh\u00ebm, por hap\u00ebsira shtes\u00eb e disk\u00ebve e justifikon kostot, duke mbrojtur t\u00eb dh\u00ebnat e korporatave. Ky tip i grupit rekomandohet p\u00ebr pun\u00ebn me t\u00eb dh\u00ebna q\u00eb k\u00ebrkojn\u00eb ruajtje me besueshm\u00ebri t\u00eb lart\u00eb, frekuenc\u00eb t\u00eb lart\u00eb 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 gjithashtu nuk harrojm\u00eb<\/h2>\n

\nDuke qen\u00eb se fol\u00ebm p\u00ebr grupe t\u00eb nivelit t\u00eb pest\u00eb dhe t\u00eb pest\u00eb t\u00eb cil\u00ebsive, \u00ebsht\u00eb m\u00ebkat t\u00eb mos p\u00ebrmendim gjithashtu lloje t\u00eb tjera t\u00eb organizimit t\u00eb grupeve si RAID 6 dhe RAID 60.<\/p>\n

\"Po
\n
\nPerformanca e RAID 6 \u00ebsht\u00eb e ngjashme me at\u00eb t\u00eb RAID 5, por k\u00ebtu minimumi dy disqe jan\u00eb caktuar p\u00ebr kontrollin e paritetit, gj\u00eb q\u00eb lejon q\u00eb grupi t\u00eb p\u00ebrballoj\u00eb d\u00ebshtimin e dy disqeve pa humbje t\u00eb t\u00eb dh\u00ebnave (n\u00eb RAID 5 nj\u00eb situat\u00eb e till\u00eb \u00ebsht\u00eb jasht\u00ebzakonisht e pad\u00ebshirueshme). Fal\u00eb k\u00ebsaj sigurohet nj\u00eb besueshm\u00ebri m\u00eb e lart\u00eb. P\u00ebr pjes\u00ebn tjet\u00ebr, gjith\u00e7ka \u00ebsht\u00eb si n\u00eb grupin e kat\u00ebrt: n\u00eb rast t\u00eb d\u00ebshtimit t\u00eb nj\u00eb ose dy disqeve, kontrollori RAID p\u00ebrdor blloqet e paritetit p\u00ebr t\u00eb rikrijuar t\u00eb gjitha informacionet q\u00eb mungojn\u00eb. Kur d\u00ebshtojn\u00eb dy disqe, rikuperimi nuk ndodh nj\u00ebkoh\u00ebsisht: s\u00eb pari rikuperohet disku i par\u00eb, pastaj ai i dyt\u00eb. K\u00ebshtu, kryhen dy operacione p\u00ebr rikuperimin e t\u00eb dh\u00ebnave.<\/p>\n

\"Po
\n
\nNuk \u00ebsht\u00eb e v\u00ebshtir\u00eb t\u00eb gjat\u00eb, q\u00eb n\u00ebse RAID 50 p\u00ebrfaq\u00ebson nj\u00eb grup t\u00eb nivelit zero nga grupet e nivelit t\u00eb pest\u00eb, at\u00ebher\u00eb RAID 60 \u00ebsht\u00eb nj\u00eb grup i nivelit zero nga grupet e nivelit t\u00eb gjasht\u00eb, p\u00ebr t\u00eb cilat sapo fol\u00ebm. Kjo do t\u00eb thot\u00eb q\u00eb nj\u00eb organizim i till\u00eb i magazinimit RAID lejon q\u00eb t\u00eb p\u00ebrballoj\u00eb humbjen e dy SSD-ve n\u00eb \u00e7do grup t\u00eb disqeve RAID 6. Principi i funksionimit \u00ebsht\u00eb i ngjash\u00ebm me at\u00eb q\u00eb p\u00ebrshkruam n\u00eb seksionin p\u00ebr RAID 50, por numri i d\u00ebshtimeve q\u00eb mund t\u00eb mbaj\u00eb grupi i nivelit t\u00eb gjasht\u00eb rritet nga 8 n\u00eb 16 disqe. Zakonisht, k\u00ebto grupe p\u00ebrdoren p\u00ebr sh\u00ebrbime n\u00eb linj\u00eb p\u00ebr klient\u00ebt q\u00eb k\u00ebrkojn\u00eb nj\u00eb disponueshm\u00ebri t\u00eb lart\u00eb.<\/p>\n

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

\nMegjith\u00ebse pasqyrimi siguron nj\u00eb disponueshm\u00ebri m\u00eb t\u00eb madhe sesa RAID 50\/60, ai gjithashtu k\u00ebrkon shum\u00eb m\u00eb shum\u00eb hap\u00ebsir\u00eb. Duke qen\u00eb se sasia e t\u00eb dh\u00ebnave dyfishohet, p\u00ebrfundimisht merrni vet\u00ebm 50% t\u00eb kapacitetit total t\u00eb disqeve t\u00eb instaluara n\u00eb server p\u00ebr regjistrim dhe ruajtje t\u00eb informacionit. Zgjedhja midis RAID 50\/60 dhe RAID 10, shum\u00eb probabilisht do t\u00eb varet nga buxhetet e disponueshme, kapaciteti i serverit dhe nevojat tuaja p\u00ebr mbrojtjen e t\u00eb dh\u00ebnave. Dhe, \u00e7mimi del n\u00eb krye, kur flasim p\u00ebr zgjidhjet SSD (si p\u00ebr klas\u00ebn e korporatave ashtu edhe p\u00ebr at\u00eb t\u00eb p\u00ebrdoruesve).<\/p>\n

Po ashtu e r\u00ebnd\u00ebsishme, tani e dim\u00eb me siguri \u2013 RAID bazuar n\u00eb SSD \u00ebsht\u00eb nj\u00eb zgjidhje mjaft e sigurt dhe nj\u00eb praktik\u00eb normale p\u00ebr biznesin modern. Edhe p\u00ebr p\u00ebrdorim n\u00eb sht\u00ebpi ka nj\u00eb arsyetim p\u00ebr t\u00eb kaluar n\u00eb NVMe, n\u00ebse buxhetet e lejojn\u00eb. Dhe n\u00ebse keni akoma nj\u00eb pyetje, p\u00ebrse \u00ebsht\u00eb e nevojshme kjo, kthehuni n\u00eb fillim t\u00eb artikullit \u2013 ne tashm\u00eb i kemi p\u00ebrgjigjur detajisht.<\/p>\n

Ky artikull \u00ebsht\u00eb p\u00ebrgatitur me mb\u00ebshtetje nga koleg\u00ebt tan\u00eb n\u00eb Broadcom, t\u00eb cil\u00ebt i ofrojn\u00eb kontrollet e tyre inxhinier\u00ebve t\u00eb Kingston p\u00ebr testim me dysk\u00ebt 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 p\u00ebr besueshm\u00ebrin\u00eb dhe stabilitetin e pun\u00ebs s\u00eb dysk\u00ebve Kingston me kontrollet HBA dhe RAID t\u00eb prodhimit. Broadcom<\/a><\/noindex>.<\/p>\n

Informacione t\u00eb tjera rreth produkteve 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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