{"id":31305,"date":"2019-10-31T21:40:34","date_gmt":"2019-10-31T18:40:34","guid":{"rendered":"https:\/\/prohoster.info\/blog\/realizatsiya-ssd-keshirovaniya-v-shd-qsan-xcubesan\/"},"modified":"2019-10-31T21:40:34","modified_gmt":"2019-10-31T18:40:34","slug":"realizatsiya-ssd-keshirovaniya-v-shd-qsan-xcubesan","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/realizatsiya-ssd-keshirovaniya-v-shd-qsan-xcubesan","title":{"rendered":"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Teknologjit\u00eb p\u00ebr rritjen e performanc\u00ebs, t\u00eb bazuara n\u00eb p\u00ebrdorimin e SSD dhe t\u00eb aplikuara gjer\u00ebsisht n\u00eb sistemet e ruajtjes, jan\u00eb shpikur prej koh\u00ebsh. Para s\u00eb gjithash, kjo \u00ebsht\u00eb p\u00ebrdorimi i SSD si hap\u00ebsir\u00eb p\u00ebr ruajtje, e cila \u00ebsht\u00eb 100% efektive, por e shtrenjt\u00eb. Prandaj, p\u00ebrdoren teknologjit\u00eb e tierimit dhe caching, ku SSD p\u00ebrdoren vet\u00ebm p\u00ebr t\u00eb dh\u00ebnat m\u00eb t\u00eb k\u00ebrkuara (\u201ct\u00eb nxehta\u201d). Tierimi \u00ebsht\u00eb i mir\u00eb p\u00ebr skenar\u00eb afatgjat\u00eb (dit\u00eb-jav\u00eb) t\u00eb p\u00ebrdorimit t\u00eb t\u00eb dh\u00ebnave \u201ct\u00eb nxehta\u201d. Caching, nga ana tjet\u00ebr, p\u00ebr p\u00ebrdorim afatshkurt\u00ebr (minuta-or\u00eb). T\u00eb dy k\u00ebta opsione realizohen n\u00eb sistemet e ruajtjes. <noindex><a rel=\"nofollow\" href=\"http:\/\/www.qsan.su\/goods\/sistemyi-xraneniya-dannyix\/\">QSAN XCubeSAN<\/a><\/noindex>. N\u00eb k\u00ebt\u00eb artikull do t\u00eb shqyrtojm\u00eb realizimin e algoritmit t\u00eb dyt\u00eb \u2013 <noindex><a rel=\"nofollow\" href=\"http:\/\/www.qsan.su\/soft\/san-os-4.0\/ssd-keshirovanie-(qcache-2.0).html\">SSD caching<\/a><\/noindex>.<\/p>\n<p>\n<img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/e2e97119a949509f4a3fe8e17a4238ac.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Thelbi i teknologjis\u00eb s\u00eb SSD caching \u00ebsht\u00eb p\u00ebrdorimi i SSD si nj\u00eb nd\u00ebrlidh\u00ebs midis disqeve t\u00eb forta dhe memories operative t\u00eb kontrollorit. Performanca e SSD, sigurisht, \u00ebsht\u00eb m\u00eb e ul\u00ebt se performanca e caches s\u00eb vet kontrollorit, por volumi \u00ebsht\u00eb shum\u00eb m\u00eb i madh. Prandaj, ne kemi nj\u00eb kompromis nd\u00ebrmjet shpejt\u00ebsis\u00eb dhe kapacitetit.<\/p>\n<p><\/p>\n<p><b>Shqyrtimi p\u00ebr p\u00ebrdorimin e SSD cache p\u00ebr lexim:<\/b><\/p>\n<p><\/p>\n<ul>\n<li>P\u00ebrpar\u00ebsia e operacioneve t\u00eb leximit krahas operacioneve t\u00eb shkruar (m\u00eb s\u00eb shumti karakteristike p\u00ebr bazat e t\u00eb dh\u00ebnave dhe aplikacionet web);<\/li>\n<li>Prania e nj\u00eb ngushtice n\u00eb form\u00eb t\u00eb performanc\u00ebs s\u00eb grupit t\u00eb disqeve t\u00eb forta;<\/li>\n<li>V\u00ebllimi i t\u00eb dh\u00ebnave t\u00eb k\u00ebrkuara \u00ebsht\u00eb m\u00eb i vog\u00ebl se v\u00ebllimi i SSD cache.<\/li>\n<\/ul>\n<p><\/p>\n<p>Shqyrtimi p\u00ebr p\u00ebrdorimin e SSD cache p\u00ebr lexim + shkruar jan\u00eb t\u00eb nj\u00ebjtat arsye, p\u00ebrve\u00e7 natyr\u00ebs s\u00eb operacioneve \u2013 tip t\u00eb p\u00ebrzier (p.sh., serveri i skedar\u00ebve).<\/p>\n<p><\/p>\n<p>Shumica e ofruesve t\u00eb sistemit t\u00eb ruajtjes p\u00ebrdorin n\u00eb produktet e tyre SSD cache vet\u00ebm p\u00ebr operacione t\u00eb leximit. Dallimi thelb\u00ebsor <noindex><a rel=\"nofollow\" href=\"http:\/\/www.qsan.su\/\">QSAN <\/a><\/noindex>nga ata \u00ebsht\u00eb mund\u00ebsia e p\u00ebrdorimit t\u00eb cache edhe p\u00ebr shkruar. P\u00ebr aktivizimin e funksionalitetit t\u00eb SSD caching n\u00eb sistemin e ruajtjes QSAN, k\u00ebrkohet blerja e nj\u00eb licence t\u00eb ve\u00e7ant\u00eb (ofrohet n\u00eb format elektronik).<\/p>\n<p><\/p>\n<p>SSD cache in XCubeSAN is physically implemented as separate SSD cache pools. The system can have up to four of them. Each pool, of course, uses its own set of SSDs. In the properties of the virtual disk, we specify whether it will use the cache pool and which one exactly. Enabling and disabling cache usage for volumes can be done online without interrupting input\/output operations. Additionally, SSDs can be added to and removed from the pool on-the-fly. When creating an SSD cache pool, it is necessary to choose the mode in which it will operate: read-only or read+write. This determines its physical organization. Since there can be multiple cache pools, their functionality can be different (meaning the system can simultaneously have cache pools for reading and for reading+writing).<\/p>\n<p><\/p>\n<p>In the case of using a cache pool for reading only, it can consist of 1-8 SSDs. The drives do not necessarily have to be of the same capacity and vendor, as they are combined into an NRAID+ structure. All SSDs in the pool are used collectively. The system independently tries to parallelize incoming requests between all SSDs to achieve maximum performance. If one of the SSDs fails, nothing serious will happen: the cache only contains a copy of the data stored on the hard disk array. The available SSD cache capacity will simply be reduced (or become zero if the original SSD cache consists of a single drive).<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/1e592445ff41335c844e0a47b2e664c3.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>If the cache is used for read + write operations, then the number of SSDs in the pool must be an even number, as the content is mirrored across pairs of drives (an NRAID 1+ structure is used). The duplication of the cache is necessary because it may contain data that has not yet been written to the hard disks. In this case, the failure of an SSD from the cache pool would lead to information loss. However, with an NRAID 1+ configuration, the failure of an SSD would simply switch the cache to 'read-only' mode while flushing unsaved data to the hard disk array. After replacing the faulty SSD, the cache will return to its original operating mode. For greater security, a dedicated hot spare can be assigned to a cache operating in read + write mode.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/61c6ba4b29ab31c3ded112b12f8103ce.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kur p\u00ebrdoret funksioni i keqimin SSD n\u00eb XCubeSAN, ka nj\u00eb s\u00ebr\u00eb k\u00ebrkesash p\u00ebr kapacitetin e memorjes s\u00eb kontrollor\u00ebve t\u00eb SCK: sa m\u00eb shum\u00eb memorie sistemike, aq m\u00eb shum\u00eb hap\u00ebsir\u00eb do t\u00eb jet\u00eb e disponueshme n\u00eb pool-in e keqimit.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/40da0dba6094c55adaa54b8d9cbc1bcd.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>P\u00ebrve\u00e7 k\u00ebsaj, ndryshe nga shumica e prodhuesve t\u00eb SCK, t\u00eb cil\u00ebt ofrojn\u00eb vet\u00ebm nj\u00eb opsion p\u00ebr t\u00eb aktivizuar \/ \u00e7aktivizuar keqimin SSD, QSAN ofron mund\u00ebsi m\u00eb t\u00eb m\u00ebdha. Konkretisht, mund t\u00eb zgjidhni modalitetin e funksionimit t\u00eb keqimit n\u00eb var\u00ebsi t\u00eb natyr\u00ebs s\u00eb ngarkes\u00ebs. Ka tre modele t\u00eb paracaktuara, m\u00eb t\u00eb af\u00ebrta me sh\u00ebrbimet p\u00ebrkat\u00ebse: baza e t\u00eb dh\u00ebnave, sistemi i skedar\u00ebve, sh\u00ebrbimi web. P\u00ebrve\u00e7 k\u00ebsaj, administratori mund t\u00eb krijoj\u00eb nj\u00eb profil t\u00eb tij, duke vendosur vlerat p\u00ebrkat\u00ebse t\u00eb parametrave: <\/p>\n<p><\/p>\n<ul>\n<li>Madh\u00ebsia e bllokut (Cache Block Size) \u2013 1\/2\/4 MB<\/li>\n<li>Numri i k\u00ebrkesave p\u00ebr t\u00eb lexuar nj\u00eb bllok, q\u00eb ai t\u00eb kopjohet n\u00eb keqim (Populate-on-Read Threshold) \u2013 1..4<\/li>\n<li>Numri i k\u00ebrkesave p\u00ebr t\u00eb shkruar nj\u00eb bllok, q\u00eb ai t\u00eb kopjohet n\u00eb keqim (Populate-on-Write Threshold) \u2013 0..4<\/li>\n<\/ul>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/b584e87c4b067ac06a4b78063007f31f.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Profilit mund t\u00eb ndryshohet \"n\u00eb flak\u00eb\", por, natyrisht, me ri-nullimin e p\u00ebrmbajtjes s\u00eb keqimit dhe me \"ngrohjen\" e re t\u00eb tij.<\/p>\n<p><\/p>\n<p>Duke shqyrtuar parimin e funksionimit t\u00eb keqimit SSD, mund t\u00eb dallohen operacionet kryesore gjat\u00eb pun\u00ebs me t\u00eb:<\/p>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"#1\">Leximi i t\u00eb dh\u00ebnave kur ato nuk jan\u00eb n\u00eb keqim;<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"#2\">Leximi i t\u00eb dh\u00ebnave kur ato jan\u00eb n\u00eb keqim;<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"#3\">Shkrimi i t\u00eb dh\u00ebnave kur p\u00ebrdoret keqimi p\u00ebr lexim;<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"#4\">Shkrimi i t\u00eb dh\u00ebnave kur p\u00ebrdoret keqimi p\u00ebr lexim + shkrim.<\/a><\/noindex><\/li>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"1\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/c9f70934f1d9bed5ad60c716bcd3ed30.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>Leximi i t\u00eb dh\u00ebnave kur ato nuk jan\u00eb n\u00eb keqim.<\/i><\/p>\n<p><\/p>\n<ol>\n<li>K\u00ebrkesa nga hosti arrin n\u00eb kontrollor;<\/li>\n<li>Pasi t\u00eb dh\u00ebnat e k\u00ebrkuara nuk jan\u00eb n\u00eb keqim SSD, ato lexohen nga disqet e ngurt\u00eb;<\/li>\n<li>T\u00eb dh\u00ebnat e lexuara d\u00ebrgohen te hosti. Nj\u00ebkoh\u00ebsisht b\u00ebhet nj\u00eb kontroll n\u00ebse k\u00ebto blloqe jan\u00eb \"t\u00eb nxehta\";<\/li>\n<li>N\u00ebse po, ato kopjohen n\u00eb keqim SSD p\u00ebr p\u00ebrdorim t\u00eb m\u00ebtejsh\u00ebm.<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"2\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/9eac4b4cf003fb310101b3981dfed177.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>Leximi i t\u00eb dh\u00ebnave kur ato jan\u00eb n\u00eb keqim.<\/i><\/p>\n<p><\/p>\n<ol>\n<li>K\u00ebrkesa nga hosti arrin n\u00eb kontrollor;<\/li>\n<li>Pasi t\u00eb dh\u00ebnat e k\u00ebrkuara jan\u00eb n\u00eb keqim SSD, ato lexohen prej andej;<\/li>\n<li>T\u00eb dh\u00ebnat e lexuara d\u00ebrgohen te hosti.<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"3\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/ae1f52f5882f19916f0b49b0619dae41.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>Shkrimi i t\u00eb dh\u00ebnave kur p\u00ebrdoret keqimi p\u00ebr lexim. <\/i><\/p>\n<p><\/p>\n<ol>\n<li>K\u00ebrkesa p\u00ebr shkrim nga hosti arrin n\u00eb kontrollor;<\/li>\n<li>T\u00eb dh\u00ebnat shkruhen n\u00eb disqet e ngurt\u00eb;<\/li>\n<li>Hostit i kthehet nj\u00eb p\u00ebrgjigje p\u00ebr shkrimin e suksessh\u00ebm;<\/li>\n<li>Nj\u00ebkoh\u00ebsisht kontrollohet n\u00ebse blloku \u00ebsht\u00eb \"i nxeht\u00eb\" (krahason paramet\u00ebr Populate-on-Write Threshold). N\u00ebse po, ai kopjohet n\u00eb keqim SSD p\u00ebr p\u00ebrdorim t\u00eb m\u00ebtejsh\u00ebm.<\/li>\n<\/ol>\n<p><noindex><a rel=\"nofollow\" name=\"4\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/b69debdc836e3c1d93f64aa8724dd322.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>Shkrimi i t\u00eb dh\u00ebnave kur p\u00ebrdoret keqimi p\u00ebr lexim + shkrim.<\/i><\/p>\n<p><\/p>\n<ol>\n<li>K\u00ebrkesa p\u00ebr shkrim nga hosti arrin n\u00eb kontrollor;<\/li>\n<li>T\u00eb dh\u00ebnat shkruhen n\u00eb keqim SSD;<\/li>\n<li>Hostit i kthehet nj\u00eb p\u00ebrgjigje p\u00ebr shkrimin e suksessh\u00ebm;<\/li>\n<li>T\u00eb dh\u00ebnat nga SSD cache regjistrohen pasivisht n\u00eb hard disqet.<\/li>\n<\/ol>\n<h2>Kontrolli n\u00eb veprim <\/h2>\n<p>\n<b class=\"spoiler_title\">Standi i testimit<\/b><\/p>\n<p>2 servera (CPU: 2 x Xeon E5-2620v3 2.4Hz \/ RAM: 32GB) jan\u00eb lidhur me dy porta p\u00ebrmes Fibre Channel 16G direkt n\u00eb Storage XCubeSAN XS5224D (16GB RAM \/ kontrollues).<\/p>\n<p><\/p>\n<p>U p\u00ebrdor\u00ebn 16 x Seagate Constellation ES, ST500NM0001, 500GB, SAS 6Gb\/s, t\u00eb kombinuar n\u00eb RAID5 (15+1) p\u00ebr masivin e t\u00eb dh\u00ebnave dhe 8 x HGST Ultrastar SSD800MH.B, HUSMH8010BSS200, 100GB, SAS 12Gb\/s si cache.<\/p>\n<p><\/p>\n<p>U krijuan 2 v\u00ebllime: nj\u00eb p\u00ebr \u00e7do server. <\/p>\n<h3>Testi 1. SSD cache vet\u00ebm p\u00ebr lexim me 1-8 SSD<\/h3>\n<p><\/p>\n<p><b>SSD Cache<\/b><\/p>\n<p><\/p>\n<ul>\n<li>Lloji I\/O: Personalizim<\/li>\n<li>Madh\u00ebsia e Bllokut t\u00eb Cache: 4MB<\/li>\n<li><b>Popullimi n\u00eb prag p\u00ebr lexim: 1<\/b><\/li>\n<li>Popullimi n\u00eb prag p\u00ebr shkruar: 0<\/li>\n<\/ul>\n<p><b>Pattern I\/O<\/b> <\/p>\n<p><\/p>\n<ul>\n<li>Mjeti: IOmeter V1.1.0<\/li>\n<li>Pun\u00ebtor\u00ebt: 1<\/li>\n<li>Derdhja e jashtme (Thell\u00ebsia e Radh\u00ebs): 128<\/li>\n<li><b>Specifikimet e Qasjes: 4KB, 100% Lexim, 100% Rast\u00ebsor<\/b><\/li>\n<\/ul>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/6d9f4d3912d066662067fba52eb0e938.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/665aa2f35d5d78bdb4a128eaea55faf2.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Teorikisht, sa m\u00eb shum\u00eb SSD n\u00eb grupin e caches, aq m\u00eb shum\u00eb performanc\u00eb. N\u00eb praktik\u00eb, kjo u konfirmua gjithashtu. E vetmja, rritja e konsiderueshme e numrit t\u00eb SSD-ve me nj\u00eb num\u00ebr t\u00eb vog\u00ebl v\u00ebllimesh nuk \u00e7on n\u00eb nj\u00eb efekt eksploziv. <\/p>\n<p><\/p>\n<h3>Testi 2. SSD cache n\u00eb modus leximi + shkrimi me 2-8 SSD<\/h3>\n<p><\/p>\n<p><b>SSD Cache<\/b><\/p>\n<p><\/p>\n<ul>\n<li> Lloji I\/O: Personalizim<\/li>\n<li>Madh\u00ebsia e Bllokut t\u00eb Cache: 4MB<\/li>\n<li>Popullimi n\u00eb prag p\u00ebr lexim: 1<\/li>\n<li><b>Popullimi n\u00eb prag p\u00ebr shkruar: 1 <\/b><\/li>\n<\/ul>\n<p><b>Pattern I\/O<\/b> <\/p>\n<p><\/p>\n<ul>\n<li>Mjeti: IOmeter V1.1.0<\/li>\n<li>Pun\u00ebtor\u00ebt: 1<\/li>\n<li>Derdhja e jashtme (Thell\u00ebsia e Radh\u00ebs): 128<\/li>\n<li><b>Specifikimet e Qasjes: 4KB, 100% Shkrim, 100% Rast\u00ebsor <\/b><\/li>\n<\/ul>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/6177fe7ef2c74045d760ba94598acb34.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/2e1f749b827d43dd3fa8dcd33243bd9e.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>I nj\u00ebjti rezultat: rritje eksplozive e performanc\u00ebs dhe shkall\u00ebzim me rritjen e numrit t\u00eb SSD-ve.<\/p>\n<p><\/p>\n<p>N\u00eb t\u00eb dy testet, volumi i t\u00eb dh\u00ebnave t\u00eb pun\u00ebs ishte m\u00eb i vog\u00ebl se volumi total i caches. Prandaj, me kalimin e koh\u00ebs t\u00eb gjitha blloqet u kopjuan n\u00eb cache. Dhe puna n\u00eb thelb u krye me SSD, duke prekur praktikisht hard disqet. Q\u00ebllimi i k\u00ebtyre testeve ishte t\u00eb tregohej qart\u00eb efektiviteti i ngrohjes s\u00eb caches dhe shkall\u00ebzimi i performanc\u00ebs s\u00eb tij n\u00eb var\u00ebsi t\u00eb numrit t\u00eb SSD-ve.<\/p>\n<p><\/p>\n<p>Tani, le t\u00eb kthehemi nga qiejt n\u00eb tok\u00eb dhe t\u00eb kontrollojm\u00eb nj\u00eb situat\u00eb m\u00eb realiste, kur volumi i t\u00eb dh\u00ebnave \u00ebsht\u00eb m\u00eb i madh se madh\u00ebsia e caches. N\u00eb m\u00ebnyr\u00eb q\u00eb testi t\u00eb kaloj\u00eb brenda nj\u00eb kohe t\u00eb arsyeshme (koha e \u2018ngrohjes\u2019 s\u00eb caches rritet ndjesh\u00ebm me rritjen e madh\u00ebsis\u00eb s\u00eb v\u00ebllimit), do t\u00eb kufizohemi n\u00eb madh\u00ebsin\u00eb e v\u00ebllimit prej 120GB. <\/p>\n<p><\/p>\n<h3>Testi 3. Emulimi i pun\u00ebs s\u00eb baz\u00ebs s\u00eb t\u00eb dh\u00ebnave <\/h3>\n<p><\/p>\n<p><b>SSD Cache<\/b><\/p>\n<p><\/p>\n<ul>\n<li> <b>Lloji I\/O: Baza e t\u00eb dh\u00ebnave<\/b><\/li>\n<li>Madh\u00ebsia e Bllokut t\u00eb Cache: 1MB<\/li>\n<li>Popullimi n\u00eb prag p\u00ebr lexim: 2<\/li>\n<li>Popullimi n\u00eb prag p\u00ebr shkruar: 1 <\/li>\n<\/ul>\n<p><b>Pattern I\/O<\/b> <\/p>\n<p><\/p>\n<ul>\n<li>Mjeti: IOmeter V1.1.0<\/li>\n<li>Pun\u00ebtor\u00ebt: 1<\/li>\n<li>Derdhja e jashtme (Thell\u00ebsia e Radh\u00ebs): 128<\/li>\n<li><b>Specifikimet e Qasjes: 8KB, 67% Lexim, 100% Rast\u00ebsor<\/b><\/li>\n<\/ul>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Implementimi i SSD caching n\u00eb SAN QSAN XCubeSAN\" src=\"\/wp-content\/uploads\/2019\/04\/949b9fc604cf3a932ebf308d19fc9ff1.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Verdikti <\/h2>\n<p><\/p>\n<blockquote><p>Si nj\u00eb p\u00ebrfundim t\u00eb duksh\u00ebm, padyshim se del nj\u00eb efikasitet i mir\u00eb n\u00eb p\u00ebrdorimin e SSD cache p\u00ebr t\u00eb rritur performanc\u00ebn e \u00e7do sistemi ruajtjeje. <noindex><a rel=\"nofollow\" href=\"http:\/\/www.qsan.su\/goods\/sistemyi-xraneniya-dannyix\/\">QSAN XCubeSAN<\/a><\/noindex> Ky kjo deklarat\u00eb i p\u00ebrket plot\u00ebsisht: funksioni i keqazhitjes SSD \u00ebsht\u00eb realizuar shk\u00eblqyesh\u00ebm. Kjo p\u00ebrfshin mb\u00ebshtetje p\u00ebr modulet e leximit dhe leximit + shkrimit, konfigurimin fleksib\u00ebl t\u00eb operimit p\u00ebr \u00e7do skenar p\u00ebrdorimi, si dhe performanc\u00ebn p\u00ebrfundimtare t\u00eb sistemit n\u00eb t\u00ebr\u00ebsi. Prandaj, p\u00ebr nj\u00eb \u00e7mim shum\u00eb t\u00eb arsyesh\u00ebm (\u00e7mimi i licenc\u00ebs \u00ebsht\u00eb i krahasuesh\u00ebm me \u00e7mimin e 1-2 SSD), \u00ebsht\u00eb e mundur t\u00eb rritet ndjesh\u00ebm performanca e p\u00ebrgjithshme.<\/p><\/blockquote>\n<p>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/skilline\/blog\/432366\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0422\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 SSD \u0438 \u0448\u0438\u0440\u043e\u043a\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0435 \u0432 \u0421\u0425\u0414, \u0443\u0436\u0435 \u0434\u0430\u0432\u043d\u043e \u0438\u0437\u043e\u0431\u0440\u0435\u0442\u0435\u043d\u044b. \u041f\u0440\u0435\u0436\u0434\u0435 \u0432\u0441\u0435\u0433\u043e \u2013 \u044d\u0442\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 SSD \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0430 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f, \u0447\u0442\u043e \u043d\u0430 100% \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e, \u043d\u043e \u0434\u043e\u0440\u043e\u0433\u043e. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u0432 \u0445\u043e\u0434 \u0438\u0434\u0443\u0442 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0442\u0438\u0440\u0438\u043d\u0433\u0430 \u0438 \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0433\u0434\u0435 SSD \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0432\u043e\u0441\u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u043d\u044b\u0445 (\u00ab\u0433\u043e\u0440\u044f\u0447\u0438\u0445\u00bb) \u0434\u0430\u043d\u043d\u044b\u0445. \u0422\u0438\u0440\u0438\u043d\u0433 \u0445\u043e\u0440\u043e\u0448 \u0434\u043b\u044f \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0435\u0432 \u0434\u043e\u043b\u0433\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e (\u0434\u043d\u0438-\u043d\u0435\u0434\u0435\u043b\u0438) \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f 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