{"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\/ro\/blog\/administrirovanie\/delimsya-opytom-kak-pokazyvayut-sebya-ssd-v-ramkah-raid-i-kakoj-uroven-massiva-vygodnee","title":{"rendered":"\u00cemp\u0103rt\u0103\u0219im experien\u021ba noastr\u0103 despre cum se comport\u0103 SSD-urile \u00een cadrul RAID \u0219i ce nivel de arie este mai avantajos.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen \u00een materialul anterior<\/a><\/noindex> am discutat deja despre \"Este RAID aplicabil pe SSD?\" folosind unit\u0103\u021bi Kingston ca exemplu, dar am abordat asta doar la nivelul ini\u021bial. \u00cen acest articol, vom analiza op\u021biunile de utilizare a solu\u021biilor NVMe profesionale \u0219i casnice \u00een cele mai populare tipuri de array-uri RAID \u0219i vom vorbi despre compatibilitatea controlerelor Broadcom<\/a><\/noindex> cu unit\u0103\u021bile Kingston.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n<\/a><\/noindex><\/p>\n

De ce este necesar RAID pe SSD?<\/h2>\n

\nAvantajele array-urilor de stocare pe baz\u0103 de SSD \u00een compara\u021bie cu cele pe baz\u0103 de hard disk-uri includ reducerea timpului de acces la date pe unitate \u0219i o performan\u021b\u0103 superioar\u0103 \u00een opera\u021biunile de citire\/scriere. Totu\u0219i, pentru a asigura o performan\u021b\u0103 ideal\u0103 a RAID-ului bazat pe SSD, se necesit\u0103 o combina\u021bie optim\u0103 de procesor, cache, software \u0219i hardware. C\u00e2nd toate aceste elemente func\u021bioneaz\u0103 perfect \u00eempreun\u0103, un array RAID din SSD poate dep\u0103\u0219i semnificativ o configura\u021bie comparabil\u0103 cu utilizarea HDD-urilor tradi\u021bionale.<\/p>\n

Un SSD tipic consum\u0103 mai pu\u021bin\u0103 energie dec\u00e2t hard disk-urile, astfel \u00eenc\u00e2t, atunci c\u00e2nd un num\u0103r mare de unit\u0103\u021bi SSD sunt combinate \u00eentr-un array RAID, economiile de energie \u00een compara\u021bie cu un RAID din HDD-uri pot duce \u0219i la reducerea costurilor facturilor de energie electric\u0103 pentru companii.<\/p>\n

Cu toate acestea, SSD RAID are limit\u0103ri \u0219i dezavantaje: \u00een special, costul mai ridicat pe gigabyte de spa\u021biu \u00een compara\u021bie cu hard disk-urile de capacitate similar\u0103. De asemenea, timpul de operare al memoriei flash p\u00e2n\u0103 la defec\u021biune este limitat de un anumit num\u0103r de cicluri de scriere. Asta \u00eenseamn\u0103 c\u0103 SSD-urile au o durat\u0103 de via\u021b\u0103 determinat\u0103 de utilizare: cu c\u00e2t informa\u021biile sunt rescrise mai frecvent pe acestea, cu at\u00e2t unitatea va ceda mai repede. Pe de alt\u0103 parte, SSD-urile corporative au o durat\u0103 de via\u021b\u0103 decent\u0103, comparabil\u0103 cu hard disk-urile mecanice.<\/p>\n

Cum se comport\u0103 SSD-urile Kingston \u00een modul RAID cu controlerele Broadcom<\/h2>\n

\nLa \u00eenceputul apari\u021biei unit\u0103\u021bilor SSD, construc\u021biile RAID aveau multe nuan\u021be. Printre acestea, utilizarea discurilor HDD, care sunt mai pu\u021bin fiabile. Unit\u0103\u021bile de stocare pe baz\u0103 de stare solid\u0103 sunt mult mai fiabile dec\u00e2t omologii lor pe baz\u0103 de discuri magnetice. A\u0219a cum \u0219tim, \u00een solu\u021biile SSD nu exist\u0103 p\u0103r\u021bi mobile, astfel c\u0103 daunele mecanice sunt reduse la zero. De asemenea, o defec\u021biune a unit\u0103\u021bilor de stocare pe baz\u0103 de stare solid\u0103 din cauza fluctua\u021biilor de tensiune este, de asemenea, foarte pu\u021bin probabil\u0103, av\u00e2nd \u00een vedere c\u0103, la nivelul unui PC de acas\u0103 sau al oric\u0103rui server, sunte\u021bi protejat de UPS-uri, filtre de re\u021bea \u0219i chiar surse de alimentare.<\/p>\n

\u00cen plus, unit\u0103\u021bile de stocare pe baz\u0103 de stare solid\u0103 au un alt mare avantaj: chiar dac\u0103 celulele de memorie se uzeaz\u0103 la scriere, citirea datelor de pe ele va fi \u00een continuare posibil\u0103, spre deosebire de un disc magnetic deteriorat \u2013 din p\u0103cate.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\n\u00cen prezent, utilizarea solu\u021biilor SSD \u00een aranjamente RAID de diferite niveluri este o practic\u0103 obi\u0219nuit\u0103. Principalul lucru este s\u0103 alege\u021bi unit\u0103\u021bi de stocare pe baz\u0103 de stare solid\u0103 ale c\u0103ror laten\u021be sunt minime. De asemenea, ideal ar fi s\u0103 folosi\u021bi SSD-uri de la acela\u0219i produc\u0103tor \u0219i din aceea\u0219i serie, pentru a evita o confuzie de unit\u0103\u021bi care sus\u021bin tipuri diferite de sarcini \u0219i care sunt construite pe baza unor tehnologii diferite de memorie, controlere \u0219i altele. A\u0219adar, dac\u0103 am decis s\u0103 achizi\u021bion\u0103m patru sau 16 SSD-uri NVMe de la Kingston pentru a crea un aranjament RAID, ar trebui ca toate s\u0103 fie din aceea\u0219i serie \u0219i gam\u0103 de modele. <\/p>\n

Apropo, \u00een articolul precedent<\/a><\/noindex> Nu \u00eent\u00e2mpl\u0103tor am men\u021bionat controlerele Broadcom c\u00e2nd am vorbit despre SSD-urile NVMe de la Kingston. Motivul este c\u0103 \u00een manualele acestor dispozitive sunt date imediat unit\u0103\u021bile compatibile (inclusiv solu\u021biile de la produc\u0103torul american men\u021bionat anterior), cu care controlerele vor func\u021biona f\u0103r\u0103 probleme. Aceast\u0103 informa\u021bie trebuie luat\u0103 \u00een considerare atunci c\u00e2nd alege\u021bi combina\u021bia \u201econtroler-SSD\u201d pentru RAID.<\/p>\n

Analiz\u0103m func\u021bionarea SSD-urilor Kingston \u00een cele mai populare tipuri de RAID \u2013 \u201e1\u201d, \u201e5\u201d, \u201e10\u201d, \u201e50\u201d<\/h2>\n

\nA\u0219adar, nivelul RAID \u201ezero\u201d nu ofer\u0103 redundan\u021b\u0103 pentru date, ci doar \u00eembun\u0103t\u0103\u021be\u0219te performan\u021ba. RAID 0 nu ofer\u0103 deloc protec\u021bie a datelor, de aceea nu-l vom considera \u00een segmentul corporate. RAID 1, pe de alt\u0103 parte, ofer\u0103 redundan\u021b\u0103 complet\u0103, dar doar o cre\u0219tere modest\u0103 a performan\u021bei, \u0219i prin urmare, ar trebui luat \u00een considerare atunci c\u00e2nd \u00eembun\u0103t\u0103\u021birea performan\u021bei nu este un factor-cheie \u00een crearea unui array RAID din SSD-uri.<\/p>\n

RAID 1 pe baza SSD-urilor Kingston \u0219i a controlerelor Broadcom<\/h2>\n

\nA\u0219adar, un array RAID de nivel \u00eent\u00e2i bazat pe controlerul Broadcom MegaRAID 9460-16i une\u0219te \u00eentre dou\u0103 \u0219i 32 de unit\u0103\u021bi Kingston, care sunt copii una a celeilalte, \u0219i ofer\u0103 redundan\u021b\u0103 complet\u0103. Dac\u0103 \u00een cazul HDD-urilor tradi\u021bionale viteza de citire \u0219i scriere a datelor r\u0103m\u00e2nea la nivelul acestui HDD, atunci cu solu\u021biile NVMe SSD ob\u021binem o cre\u0219tere de zece ori a performan\u021bei. \u00cen special \u00een ceea ce prive\u0219te timpul de acces la date. De exemplu, cu dou\u0103 SSD Kingston DC1000M U.2 NVMe \u00een RAID 1 server, vom ob\u021bine 350.000 IOPS pentru citirea datelor aleatoare \u0219i 75.000 IOPS pentru scriere. <\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\n\u00cen ceea ce prive\u0219te viteza secven\u021bial\u0103 de citire, rezultatele vor corespunde caracteristicilor unit\u0103\u021bii \u2014 3200 MB\/s. Dar, av\u00e2nd \u00een vedere c\u0103 ambele SSD-uri NVMe sunt active, datele pot fi citite simultan de pe acestea, ceea ce face ca opera\u021biunile de citire s\u0103 fie destul de rapide. \u00cens\u0103, viteza de scriere (declarat\u0103 ca fiind 2000 MB\/s) va fi mai lent\u0103, deoarece fiecare opera\u021biune de scriere este efectuat\u0103 de dou\u0103 ori. <\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nArray-ul RAID 1 este ideal pentru baze de date mici sau orice alt mediu care necesit\u0103 toleran\u021b\u0103 la erori, dar cu o capacitate mic\u0103. Copierea oglindit\u0103 a unit\u0103\u021bilor este deosebit de util\u0103 \u00een scenarii de recuperare \u00een caz de accident (performan\u021ba scade pu\u021bin \u00een acest caz), deoarece asigur\u0103 \u201ereanima\u021bia\u201d instantanee a datelor importante, \u00een cazul \u00een care una dintre unit\u0103\u021bile din array se defecteaz\u0103. Dar, deoarece acest nivel de protec\u021bie necesit\u0103 dublarea capacit\u0103\u021bii pentru stocarea unei copii oglind\u0103 a datelor (pentru stocarea a 100 TB este nevoie de 200 TB spa\u021biu), \u00een multe sisteme corporate se folosesc op\u021biuni de stocare mai economice: RAID 5 \u0219i RAID 6.<\/p>\n

RAID 5 pe baza SSD-urilor Kingston \u0219i a controlerelor Broadcom<\/h2>\n

\nPentru a organiza un array RAID de nivel 5, avem nevoie de cel pu\u021bin trei unit\u0103\u021bi de stocare, ale c\u0103ror date sunt alternate (\u00eemp\u0103r\u021bite ciclic pe toate unit\u0103\u021bile din array), dar nu sunt duplicate. \u00cen organizarea acestora, trebuie s\u0103 \u021binem cont de structura lor mai complex\u0103, deoarece aici apare no\u021biunea de \u201esum\u0103 de control\u201d (sau \u201eparitate\u201d). Aceast\u0103 no\u021biune se refer\u0103 la func\u021bia logic\u0103 algebric\u0103 XOR (sau exclusiv \u201eOR\u201d), care dicteaz\u0103 utilizarea a minimum trei unit\u0103\u021bi \u00een array (maximum \u2013 32). Informa\u021bia despre paritate este scris\u0103 pe toate \u201ediscurile\u201d din array.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nPentru un array format din patru SSD-uri SATA Kingston DC500R cu o capacitate de 3,84 TB fiecare, vom ob\u021bine 11,52 TB de spa\u021biu \u0219i 3,84 TB pentru sumele de control. Iar dac\u0103 combin\u0103m 16 unit\u0103\u021bi NVMe Kingston DC1000M U.2 cu o capacitate de 7,68 TB \u00een RAID 5, vom ob\u021bine 115,2 TB cu o pierdere de 7,68 TB. A\u0219a cum observa\u021bi, cu c\u00e2t mai multe unit\u0103\u021bi, cu at\u00e2t mai bine la final. De asemenea, este mai bine \u0219i pentru c\u0103, cu c\u00e2t avem mai multe unit\u0103\u021bi \u00een RAID 5, cu at\u00e2t mai mare va fi performan\u021ba total\u0103 la opera\u021biunile de scriere. Citirea liniar\u0103 va atinge nivelul RAID 0.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nGrupul de discuri RAID 5 asigur\u0103 o l\u0103\u021bime de band\u0103 ridicat\u0103 (\u00een special pentru fi\u0219iere mari) \u0219i redundan\u021b\u0103 cu o pierdere minim\u0103 de putere. Acest tip de organizare a array-ului se potrive\u0219te cel mai bine re\u021belelor care efectueaz\u0103 multe opera\u021biuni mici de intrare-ie\u0219ire (I\/O) simultan. Totu\u0219i, nu este recomandat s\u0103-l folosi\u021bi pentru sarcini care necesit\u0103 un num\u0103r mare de opera\u021biuni de scriere pe blocuri mici sau foarte mici.
\nExist\u0103 un alt aspect de luat \u00een considerare: \u00een cazul defect\u0103rii oric\u0103rei unit\u0103\u021bi NVMe, RAID 5 trece \u00een modul degradat, iar defectarea unei alte unit\u0103\u021bi de stocare poate deveni critic\u0103 pentru toate datele. \u00cen cazul unei avarii a unei unit\u0103\u021bi din array, controlerul RAID folose\u0219te informa\u021biile de paritate pentru a recrea toate datele lips\u0103.<\/p>\n

RAID 10 pe baz\u0103 de SSD-uri Kingston \u0219i controlere Broadcom<\/h2>\n

\nRAID 0 ofer\u0103 o dublare a vitezei \u0219i timpului de acces, \u00een timp ce RAID 1 asigur\u0103 fiabilitate. Ideal ar fi s\u0103 le combin\u0103m, iar RAID 10 (sau 1+0) vine \u00een ajutor. \u201eZecimea\u201d este format\u0103 din patru SSD-uri SATA sau NVMe (maxim 32) \u0219i implic\u0103 un array de \u201eoglindiri\u201d, num\u0103rul de unit\u0103\u021bi din care trebuie s\u0103 fie \u00eentotdeauna un multiplu de patru. Datele din acest array sunt scrise prin \u00eemp\u0103r\u021birea \u00een blocuri fixe (a\u0219a cum se \u00eent\u00e2mpl\u0103 cu RAID 0) \u0219i alternarea \u00eentre unit\u0103\u021bi, distribuind copiile \u00eentre \u201ediscurile\u201d din array-ul RAID 1. Datorit\u0103 posibilit\u0103\u021bii de acces simultan la mai multe grupuri de discuri, RAID 10 ofer\u0103 performan\u021be ridicate.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nDeoarece RAID 10 poate distribui datele pe mai multe perechi oglindite, asta \u00eenseamn\u0103 c\u0103 poate tolera defectarea unei unit\u0103\u021bi din pereche. Totu\u0219i, \u00een caz de defectare a ambelor perechi oglindite (adic\u0103 toate cele patru unit\u0103\u021bi), va avea loc o pierdere inevitabil\u0103 a datelor. Prin urmare, ob\u021binem \u0219i o bun\u0103 toleran\u021b\u0103 la defec\u021biuni \u0219i fiabilitate. Dar este important de luat \u00een considerare c\u0103, la fel ca RAID 1, array-ul de nivel zece folose\u0219te doar jum\u0103tate din capacitatea total\u0103, f\u0103c\u00e2ndu-l astfel o solu\u021bie costisitoare. De asemenea, este complex de configurat. <\/p>\n

RAID 10 este potrivit pentru utilizarea \u00een stoc\u0103ri de date care necesit\u0103 redundan\u021b\u0103 de 100% a grupurilor de discuri oglindite, precum \u0219i performan\u021b\u0103 crescut\u0103 a I\/O a RAID 0. Acesta este cea mai bun\u0103 solu\u021bie pentru baze de date de dimensiuni medii sau orice mediu care necesit\u0103 o toleran\u021b\u0103 la defec\u021biuni mai mare dec\u00e2t \u00een cazul RAID 5.<\/p>\n

RAID 50 bazat pe SSD-uri Kingston \u0219i controlere Broadcom<\/h2>\n

\nUn array combinat, similar cu RAID de nivel zece, care reprezint\u0103 un array de nivel zero creat din array-uri de nivel cinci. Ca \u0219i \u00een cazul anterior, scopul principal al acestui array este ob\u021binerea unei performan\u021be duble, men\u021bin\u00e2nd totodat\u0103 fiabilitatea datelor \u00een array-urile RAID 5. \u00cen acest caz, RAID 50 ofer\u0103 o performan\u021b\u0103 \u00eembun\u0103t\u0103\u021bit\u0103 a scrierii \u0219i o mai bun\u0103 protec\u021bie a datelor dec\u00e2t RAID 5 standard \u00een cazul unui defect al unui disc, fiind, de asemenea, capabil de o recuperare mai rapid\u0103 \u00een cazul defect\u0103rii uneia dintre unit\u0103\u021bi.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nGrupa de discuri RAID 50 \u00eemparte datele \u00een blocuri mai mici \u0219i apoi le distribuie pe fiecare array RAID 5. Grupa de discuri RAID 5, la r\u00e2ndul s\u0103u, \u00eemparte de asemenea datele \u00een blocuri mai mici, calculeaz\u0103 paritatea, efectueaz\u0103 o opera\u021bie logic\u0103 OR pentru blocuri \u0219i apoi efectueaz\u0103 opera\u021bii de scriere \u00een blocuri de date \u0219i de control al parit\u0103\u021bii pentru fiecare disc din grupul de discuri.<\/p>\n

\u0218i de\u0219i performan\u021ba scade inevitabil \u00een cazul unei defec\u021biuni a unuia dintre medii, aceasta nu este la fel de semnificativ\u0103 ca \u00een array-ul RAID 5, deoarece o defec\u021biune afecteaz\u0103 doar unul dintre arii, l\u0103s\u00e2nd cel\u0103lalt complet func\u021bional. De fapt, RAID 50 poate sus\u021bine p\u00e2n\u0103 la opt defec\u021biuni de HDD\/SSD\/NVMe, dac\u0103 fiecare disc defect este \u00een cadrul unui array RAID 5 separat.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nRAID 50 este cel mai bine utilizat pentru aplica\u021bii care necesit\u0103 o fiabilitate ridicat\u0103 \u0219i care trebuie s\u0103 gestioneze un num\u0103r mare de solicit\u0103ri, men\u021bin\u00e2nd o rat\u0103 mare de transfer a datelor \u0219i un cost mai mic al medii comparativ cu RAID 10. Cu toate acestea, av\u00e2nd \u00een vedere c\u0103 pentru configurarea unui array RAID 50 sunt necesare minimum \u0219ase medii, costul nu poate fi complet ignorat ca factor. Unul dintre dezavantajele RAID 50 este c\u0103, la fel ca RAID 5, necesit\u0103 un controller complex: cum ar fi cel men\u021bionat de noi<\/a><\/noindex> \u00een articolul anterior MegaRAID 9460-16i<\/a><\/noindex> de la Broadcom.<\/p>\n

De asemenea, merit\u0103 men\u021bionat c\u0103 RAID 50 are mai pu\u021bin spa\u021biu de stocare utilizat comparativ cu RAID 5 datorit\u0103 aloc\u0103rii capacit\u0103\u021bii pentru \u00eenregistr\u0103rile de control al parit\u0103\u021bii. Cu toate acestea, el \u00eenc\u0103 dispune de mai mult spa\u021biu util dec\u00e2t alte niveluri de RAID, \u00een special cele care utilizeaz\u0103 mirroring. Datorit\u0103 cerin\u021bei minime de \u0219ase discuri, RAID 50 poate fi o op\u021biune costisitoare, dar spa\u021biul suplimentar de disc justific\u0103 costurile, protej\u00e2nd datele corporative. Acest tip de array este recomandat pentru gestionarea datelor care necesit\u0103 o fiabilitate mare \u00een stocare, frecven\u021b\u0103 mare a solicit\u0103rilor, vitez\u0103 mare de transfer \u0219i o capacitate mare de stocare.<\/p>\n

RAID 6 \u0219i RAID 60: despre ele nu am uitat nici noi<\/h2>\n

\nDeoarece am discutat despre array-urile de niveluri cinci \u0219i cincizeci, ar fi o omisiune s\u0103 nu men\u021bion\u0103m \u0219i tipurile de organizare a array-urilor cum ar fi RAID 6 \u0219i RAID 60.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nPerforman\u021ba RAID 6 este similar\u0103 cu cea a RAID 5, dar aici minimum dou\u0103 unit\u0103\u021bi sunt dedicate controlului parit\u0103\u021bii, ceea ce permite array-ului s\u0103 supravie\u021buieasc\u0103 defect\u0103rii a dou\u0103 unit\u0103\u021bi f\u0103r\u0103 pierderi de date (\u00een RAID 5 o astfel de situa\u021bie este extrem de nedorit\u0103). Datorit\u0103 acestui fapt, se asigur\u0103 o fiabilitate mai ridicat\u0103. \u00cen rest, totul este similar cu array-ul de nivel cinci: \u00een cazul defect\u0103rii uneia sau dou\u0103 unit\u0103\u021bi, controller-ul RAID folose\u0219te blocurile de paritate pentru a recrea toat\u0103 informa\u021bia lips\u0103. La defectarea a dou\u0103 unit\u0103\u021bi, recuperarea nu se desf\u0103\u0219oar\u0103 simultan: mai \u00eent\u00e2i se remediaz\u0103 prima unitate, apoi \u2013 a doua. Astfel, se efectueaz\u0103 dou\u0103 opera\u021biuni de recuperare a datelor.<\/p>\n

\"\u00cemp\u0103rt\u0103\u0219im
\n
\nNu este greu de intuit c\u0103, dac\u0103 RAID 50 reprezint\u0103 un array de nivel zero din array-uri de nivel cinci, atunci RAID 60 este un array de nivel zero din array-uri de nivel \u0219ase, despre care tocmai am discutat. Aceasta \u00eenseamn\u0103 c\u0103 o astfel de organizare a stoc\u0103rii RAID permite supravie\u021buirea pierderii a dou\u0103 SSD-uri \u00een fiecare grup de unit\u0103\u021bi RAID 6. Principiul de func\u021bionare este similar cu cel despre care am vorbit \u00een sec\u021biunea despre RAID 50, dar num\u0103rul de defect\u0103ri pe care le poate suporta array-ul de nivel \u0219ase cre\u0219te de la 8 la 16 unit\u0103\u021bi. De obicei, aceste array-uri sunt folosite pentru servicii online c\u0103tre clien\u021bi, care necesit\u0103 o rezilien\u021b\u0103 mare.<\/p>\n

S\u0103 facem un rezumat:<\/h2>\n

\n\u00cen ciuda faptului c\u0103 mirroringul asigur\u0103 o rezilien\u021b\u0103 mai mare dec\u00e2t RAID 50\/60, necesit\u0103 \u0219i mult mai mult spa\u021biu. Deoarece num\u0103rul de date se dubleaz\u0103, ob\u021bine\u021bi practic doar 50% din capacitatea total\u0103 a unit\u0103\u021bilor instalate \u00een server pentru scrierea \u0219i stocarea informa\u021biilor. Alegerea \u00eentre RAID 50\/60 \u0219i RAID 10 va depinde, cel mai probabil, de bugetele disponibile, capacitatea serverului \u0219i nevoile dumneavoastr\u0103 \u00een ceea ce prive\u0219te protec\u021bia datelor. Costul devine prioritar atunci c\u00e2nd vorbim despre solu\u021bii SSD (fie c\u0103 sunt comerciale, fie de consum).<\/p>\n

Nu \u00een ultimul r\u00e2nd, este important de men\u021bionat c\u0103 acum \u0219tim cu siguran\u021b\u0103 \u2013 RAID bazat pe SSD este o solu\u021bie destul de sigur\u0103 \u0219i o practic\u0103 normal\u0103 pentru afacerile moderne. De asemenea, \u00een cadrul utiliz\u0103rii casnice, exist\u0103 un motiv s\u0103 trecem la NVMe, dac\u0103 bugetele permit. \u0218i dac\u0103 mai ave\u021bi o \u00eentrebare despre utilitatea tuturor acestor informa\u021bii, reveni\u021bi la \u00eenceputul articolului \u2013 am r\u0103spuns deja detaliat la aceasta.<\/p>\n

Acest articol a fost preg\u0103tit cu sprijinul colegilor no\u0219tri de la Broadcom, care furnizeaz\u0103 controlere inginerilor de la Kingston pentru testarea cu unit\u0103\u021bi de stocare SATA\/SAS\/NVMe de clas\u0103 enterprise. Datorit\u0103 acestui simbioze prietenoase, clien\u021bii nu trebuie s\u0103 se \u00eendoiasc\u0103 de fiabilitatea \u0219i stabilitatea func\u021bion\u0103rii unit\u0103\u021bilor Kingston cu controlerele HBA \u0219i RAID fabricate. Broadcom<\/a><\/noindex>.<\/p>\n

Informa\u021bii suplimentare despre produsele Kingston pot fi g\u0103site pe site-ul oficial<\/a><\/noindex> companie.
\n
Sursa: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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