{"id":31720,"date":"2019-10-31T21:42:42","date_gmt":"2019-10-31T18:42:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/modulnoe-hranenie-i-stepeni-svobody-jbod\/"},"modified":"2019-10-31T21:42:42","modified_gmt":"2019-10-31T18:42:42","slug":"modulnoe-hranenie-i-stepeni-svobody-jbod","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/modulnoe-hranenie-i-stepeni-svobody-jbod","title":{"rendered":"Depozita modulare dhe liris\u00eb s\u00eb veprimit JBOD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kur biznesi operon me t\u00eb dh\u00ebna voluminoze, nj\u00ebsia e ruajtjes nuk b\u00ebhet m\u00eb nj\u00eb disk i ve\u00e7ant\u00eb, por nj\u00eb grup disk\u00ebsh, nj\u00eb agregat i nevojsh\u00ebm volumit. Dhe duhen menaxhuar si nj\u00eb entitet i plot\u00eb. Logjika e zgjerimit t\u00eb ruajtjes me agregate t\u00eb m\u00ebdha \u00ebsht\u00eb e ilustruar mir\u00eb me shembullin e JBOD - si format i bashkimit t\u00eb disk\u00ebve dhe si nj\u00eb pajisje fizike.<\/p>\n

Infrastruktura diskore mund t\u00eb zgjerohen jo vet\u00ebm \"lart\" duke kaskadizuar JBOD, por edhe \"brenda\", duke p\u00ebrdorur skenar\u00eb t\u00eb ndrysh\u00ebm mbushjeje. Si funksionon kjo, do ta shqyrtojm\u00eb me shembullin e Western Digital Ultastar Data60.<\/a><\/noindex><\/p>\n

Rreth mbushjes<\/h2>\n

\nJBOD - nj\u00eb klas\u00eb e ve\u00e7ant\u00eb e pajisjeve serverash p\u00ebr vendosjen e ngjeshur t\u00eb disk\u00ebve, me qasje multikanal nga hostet menaxhuese p\u00ebrmes SAS. Prodhuesit e JBOD-i i shesin ato bosh, pjes\u00ebrisht ose plot\u00ebsisht t\u00eb mbushura me disk\u00eb - secili sipas m\u00ebnyr\u00ebs s\u00eb vet. Mbushja graduale e depozitave me disqe - me rritjen e nevojave - lejon shp\u00ebrndarjen e shpenzimeve kapitalore n\u00eb koh\u00eb. Me Western Digital \u00ebsht\u00eb e volitshme t\u00eb blihen JBOD me t\u00eb gjith\u00eb 60 disqet - k\u00ebshtu \u00ebsht\u00eb shum\u00eb m\u00eb lir\u00eb. Por gjithashtu mund t\u00eb blini edhe t\u00eb plot\u00ebsuar pjes\u00ebrisht: konfigurimi minimal i Ultastar Data60 p\u00ebrmban 24 disqe.<\/p>\n

Pse 24? P\u00ebrgjigja \u00ebsht\u00eb e thjesht\u00eb: aerodinamika. \"Standardi i art\u00eb\" JBOD 4U \/ 60 x 3.5\u201d ka arritur t\u00ebr\u00ebsisht n\u00eb industri p\u00ebr arsye praktike - shkak t\u00eb dimensioneve t\u00eb arsyeshme t\u00eb pajisjes, organizimit t\u00eb aksesit, ajrosjes s\u00eb mir\u00eb. 60 disqe grumbullohen si 5 radh\u00eb me 12 HDD n\u00eb secil\u00ebn. Mbushja e pjesshme e radh\u00ebve ose mosplot\u00ebsimi i disqeve n\u00eb JBOD (p\u00ebr shembull, vet\u00ebm nj\u00eb radh\u00eb) \u00e7on n\u00eb p\u00ebrkeq\u00ebsimin e shp\u00ebrndarjes s\u00eb nxeht\u00ebsis\u00eb ose madje n\u00eb reversimin e rrjedh\u00ebs s\u00eb ajrit n\u00eb kanalin qendror - nj\u00eb karakteristik\u00eb konstruktive e Ultastar Data60, karakteristik\u00ebs s\u00eb tij dalluese.<\/p>\n

N\u00eb JBOD e saj, WD p\u00ebrdor teknologjin\u00eb e ajrosjes s\u00eb disk\u00ebve ArcticFlow, e cila \u00ebsht\u00eb modeluar dhe optimizuar me kujdes. T\u00eb gjitha p\u00ebr HDD - p\u00ebr performanc\u00ebn, q\u00ebndrueshm\u00ebrin\u00eb, ruajtjen e t\u00eb dh\u00ebnave.<\/p>\n

Esenca e ArcticFlow p\u00ebrfshin krijimin me an\u00eb t\u00eb ventilator\u00ebve t\u00eb dy rrjedhave t\u00eb pavarura ajri: e p\u00ebrparme ajros disk\u00ebt e radh\u00ebve p\u00ebrpara, dhe ajri, q\u00eb hyn n\u00ebp\u00ebr korridorin e brendsh\u00ebm t\u00eb ajrit n\u00eb thell\u00ebsi t\u00eb kas\u00ebs, p\u00ebrdoret p\u00ebr ajrosjen e disk\u00ebve n\u00eb zon\u00ebn e prapme t\u00eb JBOD.<\/p>\n

\u00cbsht\u00eb e qart\u00eb pse p\u00ebr t\u00eb punuar n\u00eb m\u00ebnyr\u00eb efektive ArcticFlow \u00ebsht\u00eb e nevojshme t\u00eb ndiqet mbushja e hap\u00ebsirave t\u00eb lira. N\u00eb konfigurimin minimal me 24 disqe, pozita n\u00eb Ultastar Data60 duhet t\u00eb filloj\u00eb nga zona e prapme.<\/p>\n

\"Depozita<\/p>\n

\nN\u00eb nj\u00eb konfigurim me 12 disqe, pa hasur rezistenc\u00ebn q\u00eb duhet t\u00eb krijoj\u00eb kompozimi dy-rresht, ajri i dal\u00eb nga JBOD p\u00ebrs\u00ebri p\u00ebrfundon n\u00eb sistemin e ftohjes p\u00ebrmes zon\u00ebs s\u00eb p\u00ebrparme.
\n\"Depozita
\nEkziston nj\u00eb m\u00ebnyr\u00eb p\u00ebr t\u00eb p\u00ebrmir\u00ebsuar situat\u00ebn \u2014 p\u00ebr t\u00eb cil\u00ebn do t\u00eb flasim m\u00eb von\u00eb.<\/p>\n

Rreth hibriditetit<\/h2>\n

\nDuhet t\u00eb pranojm\u00eb menj\u00ebher\u00eb, si nj\u00eb aksionom\u00eb, q\u00eb q\u00ebllimi i JBOD-it \u00ebsht\u00eb ruajtja e dh\u00ebnave n\u00eb shkall\u00eb. Nga kjo del: ta p\u00ebrdorim p\u00ebr popullimin e pajisjeve homogene, me synimin q\u00eb me kalimin e koh\u00ebs t\u00eb arrijm\u00eb kapacitetin e projektit, duke mbushur t\u00eb gjitha hap\u00ebsirat.<\/p>\n

Por \u00e7far\u00eb do t\u00eb b\u00ebjm\u00eb me SSD? Zgjidhja m\u00eb e mir\u00eb (dhe e sakt\u00eb) \u00ebsht\u00eb t\u00eb krijojm\u00eb nj\u00eb ruajtje t\u00eb ve\u00e7ant\u00eb performante n\u00eb JBOF. Aty, disqet e ngurt\u00eb kan\u00eb komoditet m\u00eb t\u00eb madh. Duke qen\u00eb se Ultastar Data60 lejon gjithashtu instalimin e Flash-ave. Para se t\u00eb filloni hibridizimin e JBOD, duhet s\u00eb pari t\u00eb peshojm\u00eb t\u00eb gjitha \"p\u00ebr\" \u2014 t\u00eb zgjidhni SSD nga lista e pajtimeve t\u00eb p\u00ebrshtatshme (ndryshe nga HDD, situata me mb\u00ebshtetje p\u00ebr SSD \u00ebsht\u00eb plot nuanca). Duhet gjithashtu t\u00eb investoni n\u00eb mbajt\u00ebsit e disqeve 2.5-in\u00e7 n\u00eb hap\u00ebsira 3.5-in\u00e7. <\/p>\n

Disqet SSD duhet t\u00eb vendosen n\u00eb zon\u00ebn e prapme t\u00eb JBOD, duke mbuluar hap\u00ebsirat e pashfryt\u00ebzuara me blloqe speciale \u2014 Drive Blanks. Kjo bllokon fluksin e lir\u00eb t\u00eb ajrit t\u00eb ftohjes, p\u00ebr t\u00eb parandaluar riciklimin e tij, si\u00e7 \u00ebsht\u00eb th\u00ebn\u00eb m\u00eb sip\u00ebr.
\n\"Depozita
\nN\u00eb total, lejohet instalimi i jo m\u00eb shum\u00eb se 24 pajisjeve t\u00eb ngurta n\u00eb shasin\u00eb Ultastar Data60. N\u00eb \u00e7do rast, ato duhet t\u00eb jen\u00eb rreshtat e fundit n\u00eb zon\u00ebn e prapme.
\n\"Depozita
\nPse 24? Shkarkimi termik i pajisjeve SSD \u00ebsht\u00eb m\u00eb i lart\u00eb se karakteristikat e ngjashme t\u00eb HDD, p\u00ebr k\u00ebt\u00eb arsye kompozimi shum\u00eb-rresht i disqeve me natyra t\u00eb ndryshme nuk do t\u00eb ftohet n\u00eb m\u00ebnyr\u00eb efektive nga ArcticFlow. Dhe shkarkimi i nxeht\u00ebsis\u00eb do t\u00eb b\u00ebhet nj\u00eb faktor rreziku p\u00ebr operimin e JBOD.<\/p>\n

K\u00ebtu \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb theksohet se me ndihm\u00ebn e Drive Blanks mund t\u00eb reduktohet efekti i riciklimit t\u00eb ajrit t\u00eb nxeht\u00eb. Kompozimi i JBOD me 12 HDD do t\u00eb ftohet m\u00eb mir\u00eb, n\u00ebse hap\u00ebsirat e zbraz\u00ebta mbyllen me bloqe. Prodhuesi nuk e ka p\u00ebrmendur k\u00ebt\u00eb truk, por e drejta p\u00ebr t'u eksperimentuar \u00ebsht\u00eb gjithmon\u00eb me ne. P\u00ebr t\u00eb th\u00ebn\u00eb, WD nuk e ndalon plot\u00ebsimin e 12 disqeve, megjith\u00ebse nuk e rekomandon at\u00eb.<\/p>\n

Konkluzionet praktike<\/h2>\n

\nNj\u00eb njohuri edhe e sip\u00ebrfaqshme mbi aerodinamik\u00ebn JBOD jep nj\u00eb ide se p\u00ebr nj\u00eb funksionim t\u00eb besuesh\u00ebm t\u00eb magazin\u00ebs, \u00ebsht\u00eb m\u00eb mir\u00eb t\u00eb mb\u00ebshtetemi n\u00eb p\u00ebrvoj\u00ebn dhe rekomandimet e zhvilluesit. Proceset q\u00eb ndodhin brenda kuti t\u00eb disk\u00ebve k\u00ebrkojn\u00eb studime themelore. Shkelja e njohurive t\u00eb pranuara sjell probleme, t\u00eb cilat n\u00eb volumet e ruajtjes prej qindra terabajt jan\u00eb t\u00eb ndjeshme n\u00eb \u00e7do kuptim.<\/p>\n

\u00cbsht\u00eb e njohur si shkruhen rregullat ushtarake. Di\u00e7ka e ngjashme ndodh edhe me arkitektur\u00ebn JBOD. N\u00ebse zgjidhjet e s\u00eb kaluar\u00ebs pat\u00ebn probleme me vendosjen, ku \u00ebsht\u00eb b\u00ebr\u00eb interfaci n\u00eb zon\u00ebn e \"shk\u00ebrdhitjes\", e fryr\u00eb nga ajri i nxeht\u00eb, sot Ultastar Data60 \u00ebsht\u00eb i lir\u00eb nga kjo mang\u00ebsi. T\u00eb gjitha gjetjet e tjera s\u00eb bashku jan\u00eb thjesht nj\u00eb mrekulli teknologjike. K\u00ebshtu duhet t\u00eb e shohim k\u00ebt\u00eb.
\n
Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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