{"id":3362,"date":"2012-12-20T13:15:13","date_gmt":"2012-12-20T12:15:13","guid":{"rendered":"http:\/\/blog.websupport.sk\/?p=3362"},"modified":"2025-03-11T21:06:17","modified_gmt":"2025-03-11T20:06:17","slug":"prezrite-si-nas-najnovsi-rack","status":"publish","type":"post","link":"https:\/\/www.websupport.sk\/blog\/2012\/12\/prezrite-si-nas-najnovsi-rack\/","title":{"rendered":"Prezrite si n\u00e1\u0161 najnov\u0161\u00ed rack"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\"><b>Doba \u010d\u00edtania:<\/b><\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span><p>V poslednej dobe prid\u00e1vame vo ve\u013ekom \u010fal\u0161ie \u017eelezo do serverovn\u00ed. V nov\u00fdch rackoch zapracov\u00e1vame nami dosia\u013e nepou\u017e\u00edvan\u00e9 technol\u00f3gie. Ke\u010f\u017ee testovaniu a optimaliz\u00e1cii venujeme kopu \u010dasu, radi by sme v\u00e1m uk\u00e1zali, \u010do v\u0161etko v takom racku je.<br \/>\n<!--more--><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.websupport.sk\/blogoads\/sites\/2\/2012\/12\/3h.jpg\" alt=\"Mail server\" title=\"Mail server\" width=\"517\" height=\"82\" class=\"alignnone size-full wp-image-3366\" srcset=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/3h.jpg 517w, https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/3h-300x48.jpg 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><br \/>\n   N\u00e1\u0161 v porad\u00ed u\u017e \u0161tvrt\u00fd mailserver, ktor\u00fd je ur\u010den\u00fd len na pr\u00edjem po\u0161ty. Ide teda vlastne o IMAP\/POP3 server. Pr\u00edprava a testovanie trvali viac ako dva mesiace. S\u00fa v \u0148om pou\u017eit\u00e9 nov\u00e9 technol\u00f3gie, \u00faplne in\u00e9 ako v na\u0161ich doteraj\u0161\u00edch mailov\u00fdch serveroch. Medzi tri hlavn\u00e9 ur\u010dite patria:<\/p>\n<ul>\n<li><strong>S\u00faborov\u00fd syst\u00e9m ZFS<\/strong> &#8211; Umo\u017e\u0148uje kompresiu e-mailov met\u00f3dou gzip, v\u010faka ktorej mo\u017eno dosiahnu\u0165 kompresiu na \u00farovni 60% z p\u00f4vodn\u00e9ho objemu. Takto sme re\u00e1lne dok\u00e1zali zredukova\u0165 5,3 TB d\u00e1t na 3,34 TB.Kompresia taktie\u017e znamen\u00e1 men\u0161\u00ed po\u010det zap\u00edsan\u00fdch aj na\u010d\u00edtan\u00fdch d\u00e1t z diskov, a teda men\u0161\u00ed po\u010det IO oper\u00e1ci\u00ed. Celkovo m\u00e1 ZFS vlastnosti na nieko\u013eko str\u00e1n a viac sa o \u0148om m\u00f4\u017eete dozvedie\u0165 z <a href=\"http:\/\/hub.opensolaris.org\/bin\/download\/Community+Group+zfs\/docs\/zfslast.pdf\" title=\"Predn\u00e1\u0161ka o ZFS\" target=\"_blank\">vynikaj\u00facej predn\u00e1\u0161ky<\/a>\n<\/li>\n<li><strong>RAID10<\/strong> &#8211; Lep\u0161ie rie\u0161enie pre workload mailservera ako doteraz pou\u017e\u00edvan\u00fd RAID5, ktor\u00fd nie je a\u017e tak\u00fd optim\u00e1lny na oper\u00e1cie s mal\u00fdmi s\u00fabormi, ktor\u00fdch je na mailserveri ve\u013ea.<\/li>\n<li> <strong>L2ARC <\/strong>&#8211; T\u00e1to technol\u00f3gia pom\u00e1ha cachova\u0165 d\u00e1ta s\u00faborov\u00e9ho syst\u00e9mu na nain\u0161talovanej flashke (v PCIe slote umiestnen\u00e1 100GB Flash karta). Tak\u017ee sa s diskami pracuje, a\u017e ke\u010f sa relevantn\u00e9 d\u00e1ta nen\u00e1jdu ani v 32GB ARC cache a ani v 100GB L2ARC cache. Pre\u010d\u00edtajte si <a href=\"https:\/\/blogs.oracle.com\/brendan\/entry\/test\" title=\"Viac o L2ARC\" target=\"_blank\">viac o L2ARC<\/a>.<\/li>\n<\/ul>\n<p><\/br><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3364\" title=\"coreswitche\" src=\"https:\/\/www.websupport.sk\/blogoads\/sites\/2\/2012\/12\/1h.jpg\" alt=\"coreswitche\" width=\"517\" height=\"196\" srcset=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/1h.jpg 517w, https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/1h-300x114.jpg 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><br \/>\n   Ako core switche s\u00fa pou\u017eit\u00e9 dva Cisco WS-C3750X-48. Hrub\u00e9 k\u00e1ble, ktor\u00fdmi s\u00fa oba switche prepojen\u00e9, s\u00fa ur\u010den\u00e9 na  vytvorenie stacku. Ten umo\u017e\u0148uje vidie\u0165 dva 48-portov\u00e9 switche ako jedno zariadenie, t.j. ako jeden 96-portov\u00fd switch. To zjednodu\u0161uje mana\u017ement a umo\u017e\u0148uje \u0161k\u00e1lova\u0165 prep\u00ednan\u00fa kapacitu prid\u00e1van\u00edm \u010fal\u0161\u00edch switchov za behu.<br \/>\n<\/br><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.websupport.sk\/blogoads\/sites\/2\/2012\/12\/2h.jpg\" alt=\"blade skrinka\" title=\"blade skrinka\" width=\"517\" height=\"219\" class=\"alignnone size-full wp-image-3365\" srcset=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/2h.jpg 517w, https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/2h-300x127.jpg 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><br \/>\n   Zhruba ostatn\u00e9 2 roky s\u00fa v\u0161etky na\u0161e nov\u00e9 servery vo forme blade serverov od spolo\u010dnosti Supermicro. Blade skrinka potrebuje \u0161tyri 1620W zdroje, aby bola schopn\u00e1 utiahnu\u0165 14 serverov pri plnom nasaden\u00ed. Samozrejmos\u0165ou je redundancia na \u00farovni N+1, tak\u017ee ak sa pokaz\u00ed jeden zdroj, ni\u010d sa nedeje a skrinka funguje \u010falej. <\/br><\/p>\n<p>V\u00fdhodou je vy\u0161\u0161ia integr\u00e1cia serverov, ktor\u00e1 pri v\u00fd\u0161ke bladeovej skrinky 7U vych\u00e1dza 2 servery na 1 U.  <a href=\"http:\/\/en.wikipedia.org\/wiki\/Rack_unit\" title=\"Neviete \u010do je to U?\">Neviete \u010do je to U?<\/a><\/p>\n<p>Na obr\u00e1zku je mo\u017en\u00e9 vidie\u0165 u\u017e aj osaden\u00fd prv\u00fd server xendb5, ur\u010den\u00fd na beh datab\u00e1zov\u00fdch serverov na virtualiza\u010dnej platforme Xen s tromi SSD diskami. Osaden\u00e1 skrinka je u\u017e tretia v porad\u00ed a celkovo len blade serverov u\u017e m\u00e1me 29.<br \/>\n<\/br><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.websupport.sk\/blogoads\/sites\/2\/2012\/12\/4h.jpg\" alt=\"beckup server\" title=\"backup server\" width=\"517\" height=\"150\" class=\"alignnone size-full wp-image-3367\" srcset=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/4h.jpg 517w, https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/4h-300x87.jpg 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><\/p>\n<p>   Na technol\u00f3gii ZFS, pou\u017eitej pri mailserveroch, je postaven\u00fd aj n\u00e1\u0161 nov\u00fd backup server. Technol\u00f3gia ZFS si ve\u013emi dobre rozumie s mnohodiskov\u00fdmi servermi. Na obr\u00e1zku je konkr\u00e9tne SuperStorage Server 6047R-E1R36N, ktor\u00e9ho zvl\u00e1\u0161tnos\u0165ou je umiestnenie \u010fal\u0161\u00edch 12 poz\u00edci\u00ed na disky v zadnej \u010dasti servera. <a href=\"http:\/\/www.supermicro.nl\/a_images\/products\/chassis\/4U\/SC847E16-R1K28LPB_spec.jpg\" title=\"ilustracia\" target=\"_blank\">Ako m\u00f4\u017eete vidie\u0165 tu.<\/a><\/p>\n<p>To prin\u00e1\u0161a mo\u017enos\u0165 pripojenia \u010fal\u0161\u00edch diskov\u00fdch pol\u00ed, ako je mo\u017en\u00e9 vidie\u0165 aj na obr\u00e1zku, kde sa u\u017e nach\u00e1dza diskov\u00e9 pole Promise Vtrak E310i s \u010fal\u0161\u00edmi 12 poz\u00edciami. V kone\u010dnom setupe bude k backup serveru pripojen\u00e9 e\u0161te \u010fal\u0161ie tak\u00e9to pole, tak\u017ee vo fin\u00e1le bude ma\u0165 backup server a\u017e 60 poz\u00edci\u00ed pre disky. <\/p>\n<p>   Nov\u00e9 racky s\u00fa len jednou z vec\u00ed, na ktor\u00fdch v r\u00e1mci pushovania kvality aktu\u00e1lne pracujeme. Budeme pravidelne pripravova\u0165 blogposty o \u010fal\u0161\u00edch zlep\u0161eniach a nov\u00fdch technol\u00f3gi\u00e1ch.<br \/>\nSO,  STAY TUNED!<br \/>\n<\/br><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.websupport.sk\/blogoads\/sites\/2\/2012\/12\/server.jpg\" alt=\"komplet rack\" title=\"komplet rack\" width=\"517\" height=\"459\" class=\"alignnone size-full wp-image-3368\" srcset=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/server.jpg 517w, https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2012\/12\/server-300x266.jpg 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V poslednej dobe prid\u00e1vame vo ve\u013ekom \u010fal\u0161ie \u017eelezo do serverovn\u00ed. V nov\u00fdch rackoch zapracov\u00e1vame nami dosia\u013e nepou\u017e\u00edvan\u00e9 technol\u00f3gie. Ke\u010f\u017ee testovaniu a optimaliz\u00e1cii venujeme kopu \u010dasu, radi by sme v\u00e1m uk\u00e1zali, \u010do v\u0161etko v takom racku je.<\/p>\n","protected":false},"author":30,"featured_media":5590,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[703],"class_list":["post-3362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologie","tag-racky"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Prezrite si n\u00e1\u0161 najnov\u0161\u00ed rack - Websupport blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.websupport.sk\/blog\/2012\/12\/prezrite-si-nas-najnovsi-rack\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prezrite si n\u00e1\u0161 najnov\u0161\u00ed rack - Websupport blog\" \/>\n<meta property=\"og:description\" content=\"V poslednej dobe prid\u00e1vame vo ve\u013ekom \u010fal\u0161ie \u017eelezo do serverovn\u00ed. V nov\u00fdch rackoch zapracov\u00e1vame nami dosia\u013e nepou\u017e\u00edvan\u00e9 technol\u00f3gie. Ke\u010f\u017ee testovaniu a optimaliz\u00e1cii venujeme kopu \u010dasu, radi by sme v\u00e1m uk\u00e1zali, \u010do v\u0161etko v takom racku je.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.websupport.sk\/blog\/2012\/12\/prezrite-si-nas-najnovsi-rack\/\" \/>\n<meta property=\"og:site_name\" content=\"Websupport blog\" \/>\n<meta property=\"article:published_time\" content=\"2012-12-20T12:15:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-11T20:06:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.websupport.sk\/blog\/app\/uploads\/sites\/2\/2015\/01\/zlta_1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"290\" \/>\n\t<meta property=\"og:image:height\" content=\"380\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"tomas.corej\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Autor\" \/>\n\t<meta name=\"twitter:data1\" content=\"tomas.corej\" \/>\n\t<meta name=\"twitter:label2\" content=\"Predpokladan\u00fd \u010das \u010d\u00edtania\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 min\u00faty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/\"},\"author\":{\"name\":\"tomas.corej\",\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/#\\\/schema\\\/person\\\/859f9c6819c681d55e420c466632a14c\"},\"headline\":\"Prezrite si n\u00e1\u0161 najnov\u0161\u00ed rack\",\"datePublished\":\"2012-12-20T12:15:13+00:00\",\"dateModified\":\"2025-03-11T20:06:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/\"},\"wordCount\":640,\"commentCount\":12,\"publisher\":{\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/app\\\/uploads\\\/sites\\\/2\\\/2015\\\/01\\\/zlta_1.png\",\"keywords\":[\"racky\"],\"articleSection\":[\"Technol\u00f3gie\"],\"inLanguage\":\"sk-SK\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/\",\"url\":\"https:\\\/\\\/www.websupport.sk\\\/blog\\\/2012\\\/12\\\/prezrite-si-nas-najnovsi-rack\\\/\",\"name\":\"Prezrite si n\u00e1\u0161 najnov\u0161\u00ed rack - 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