{"id":4383,"date":"2025-04-29T11:01:51","date_gmt":"2025-04-29T11:01:51","guid":{"rendered":"https:\/\/www.kmdpower.com\/?p=4383"},"modified":"2025-04-29T11:01:53","modified_gmt":"2025-04-29T11:01:53","slug":"3u-vs-4u-server-rack-batteries-data-center-selection-guide","status":"publish","type":"post","link":"https:\/\/www.kmdpower.com\/cs\/news\/3u-vs-4u-server-rack-batteries-data-center-selection-guide\/","title":{"rendered":"3U vs 4U serverov\u00e9 stojanov\u00e9 baterie: Pr\u016fvodce v\u00fdb\u011brem datov\u00e9ho centra"},"content":{"rendered":"<p>Nep\u0159etr\u017eit\u00fd provoz serverov\u00e9 infrastruktury a kl\u00ed\u010dov\u00fdch prost\u0159edk\u016f IT je nejvy\u0161\u0161\u00ed prioritou, zejm\u00e9na v p\u0159\u00edpad\u011b v\u00fdpadku hlavn\u00edho nap\u00e1jen\u00ed. Pro za\u0159\u00edzen\u00ed um\u00edst\u011bn\u00e1 ve stojanech - t\u011bchto vysok\u00fdch sk\u0159\u00edn\u00edch, v nich\u017e je ulo\u017eeno IT vybaven\u00ed - jsou nezbytn\u00e9 spolehliv\u00e9 z\u00e1lo\u017en\u00ed baterie, kter\u00e9 jsou um\u00edst\u011bny p\u0159\u00edmo ve stojanu.<\/p><p>Baterie pro serverov\u00e9 stojany se v\u0161ak dod\u00e1vaj\u00ed v r\u016fzn\u00fdch fyzick\u00fdch velikostech. Obvykle se setk\u00e1te se dv\u011bma b\u011b\u017en\u00fdmi v\u00fd\u0161kami: 3U a 4U. V\u00fdb\u011br mezi nimi v\u00fdznamn\u011b ovliv\u0148uje kapacitu z\u00e1lo\u017en\u00edho nap\u00e1jen\u00ed a vyu\u017eit\u00ed prostoru v racku.<\/p><p><strong><a href=\"https:\/\/www.kmdpower.com\/cs\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kamada Power<\/a><\/strong> Jako <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/solar-batteries\/\" target=\"_blank\" rel=\"noreferrer noopener\">baterie do serverov\u00e9ho stojanu<\/a><\/strong> Tento pr\u016fvodce rozeb\u00edr\u00e1 kl\u00ed\u010dov\u00e9 rozd\u00edly, kter\u00e9 v\u00e1m pomohou ur\u010dit nejvhodn\u011bj\u0161\u00ed za\u0159\u00edzen\u00ed pro va\u0161i konfiguraci.<\/p><figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007.jpg\" alt=\"\" class=\"wp-image-4265\" srcset=\"https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007.jpg 1000w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-300x300.jpg 300w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-150x150.jpg 150w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-768x768.jpg 768w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-12x12.jpg 12w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-600x600.jpg 600w, https:\/\/www.kmdpower.com\/wp-content\/uploads\/Kamada-48V-Server-Rack-Mount-Battery-51.2V-300Ah-15kWh-007-100x100.jpg 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><p class=\"has-text-align-center\"><a href=\"https:\/\/www.kmdpower.com\/cs\/solar-batteries\/\" target=\"_blank\" rel=\"noreferrer noopener\">Baterie pro nap\u00e1jec\u00ed server Kamada<\/a><\/p><h2 class=\"wp-block-heading\" id=\"understanding-rack-units-u-\">Porozum\u011bn\u00ed reg\u00e1lov\u00fdm jednotk\u00e1m (U)<\/h2><p>Standardizovan\u00e1 v\u00fd\u0161ka za\u0159\u00edzen\u00ed v serverov\u00e9m rozvad\u011b\u010di je definov\u00e1na jednotkou Rack Unit (U). Serverov\u00fd rack je sk\u0159\u00ed\u0148 se standardizovan\u00fdmi sloty.<\/p><p><strong>Definice:<\/strong> Jedno U odpov\u00edd\u00e1 1,75 palce (44,45 mm).<\/p><ul class=\"wp-block-list\"><li>Baterie 3U pot\u0159ebuje t\u0159i vertik\u00e1ln\u00ed stojanov\u00e9 jednotky o v\u00fd\u0161ce asi 5,25 palce.<\/li>\n\n<li>Baterie 4U vy\u017eaduje \u010dty\u0159i jednotky o v\u00fd\u0161ce p\u0159ibli\u017en\u011b 7 palc\u016f.<\/li><\/ul><p>Pochopen\u00ed velikosti U je z\u00e1sadn\u00ed, proto\u017ee vyu\u017eiteln\u00fd prostor v racku je v\u017edy drah\u00fd. Velikost bateriov\u00e9 jednotky p\u0159\u00edmo ovliv\u0148uje dostupn\u00fd vertik\u00e1ln\u00ed prostor. Ovliv\u0148uje tak\u00e9 vnit\u0159n\u00ed konstrukci bateriov\u00e9 jednotky, co\u017e m\u00e1 dopad na potenci\u00e1ln\u00ed kapacitu \u010dl\u00e1nk\u016f a tepeln\u00fd management.<\/p><h2 class=\"wp-block-heading\" id=\"3u-vs-4u-core-technical-differences\">3U vs 4U: Z\u00e1kladn\u00ed technick\u00e9 rozd\u00edly<\/h2><h3 class=\"wp-block-heading\" id=\"size-and-rack-space\">Velikost a prostor v reg\u00e1lu<\/h3><p>Nejz\u0159eteln\u011bj\u0161\u00edm rozd\u00edlem je v\u00fd\u0161ka: 4U je vy\u0161\u0161\u00ed ne\u017e 3U, co\u017e umo\u017e\u0148uje um\u00edstit do stojanu m\u00e9n\u011b jednotek 4U ve vertik\u00e1ln\u00edm sm\u011bru. V\u011bt\u0161\u00ed sk\u0159\u00ed\u0148 4U nab\u00edz\u00ed v\u011bt\u0161\u00ed vnit\u0159n\u00ed objem, co\u017e je v\u00fdhodn\u00e9 pro flexibilitu n\u00e1vrhu.<\/p><h3 class=\"wp-block-heading\" id=\"capacity-power-density\">Kapacita a hustota v\u00fdkonu<\/h3><ul class=\"wp-block-list\"><li><strong>Kapacita:<\/strong> Celkov\u00e1 ulo\u017een\u00e1 energie (Ah\/kWh). V\u011bt\u0161\u00ed jednotka 4U obvykle obsahuje v\u00edce \u010dl\u00e1nk\u016f a nab\u00edz\u00ed vy\u0161\u0161\u00ed celkovou kapacitu pro del\u0161\u00ed dobu provozu.<\/li>\n\n<li><strong>Hustota v\u00fdkonu:<\/strong> M\u011b\u0159\u00ed v\u00fdkon na stojanovou jednotku. Zat\u00edmco 4U m\u00e1 vy\u0161\u0161\u00ed <em>celkem<\/em> dob\u0159e navr\u017een\u00e9 jednotky 3U mohou b\u00fdt na svou velikost p\u0159ekvapiv\u011b v\u00fdkonn\u00e9 (vysok\u00e1 hustota v\u00fdkonu na U).<\/li><\/ul><h3 class=\"wp-block-heading\" id=\"cooling-and-thermal-management\">Chlazen\u00ed a tepeln\u00fd management<\/h3><p>Stav a v\u00fdkon baterie jsou velmi citliv\u00e9 na teplotu. V\u011bt\u0161\u00ed vnit\u0159n\u00ed prostor v jednotce 4U obvykle usnad\u0148uje lep\u0161\u00ed proud\u011bn\u00ed vzduchu a umo\u017e\u0148uje robustn\u011bj\u0161\u00ed integraci chladic\u00edch komponent, co\u017e napom\u00e1h\u00e1 \u00fa\u010dinn\u00e9mu \u0159\u00edzen\u00ed tepla. \u00da\u010dinn\u00e9 chlazen\u00ed je vy\u017eadov\u00e1no pro oboj\u00ed, ale optim\u00e1ln\u00ed n\u00e1vrh m\u016f\u017ee b\u00fdt snaz\u0161\u00ed d\u00edky v\u011bt\u0161\u00edmu vnit\u0159n\u00edmu objemu jednotky 4U, zejm\u00e9na p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed.<\/p><h3 class=\"wp-block-heading\" id=\"weight-installation\">Hmotnost a instalace<\/h3><p>Vy\u0161\u0161\u00ed kapacita obvykle znamen\u00e1 vy\u0161\u0161\u00ed hmotnost; 4U baterie jsou obecn\u011b t\u011b\u017e\u0161\u00ed ne\u017e 3U jednotky. Instalace t\u011b\u017e\u0161\u00edch jednotek 4U je n\u00e1ro\u010dn\u011bj\u0161\u00ed a \u010dasto vy\u017eaduje v\u00edce lid\u00ed nebo specializovan\u00e9 zvedac\u00ed za\u0159\u00edzen\u00ed pro zaji\u0161t\u011bn\u00ed bezpe\u010dnosti.<\/p><h3 class=\"wp-block-heading\" id=\"connectivity-monitoring\">P\u0159ipojen\u00ed a monitorov\u00e1n\u00ed<\/h3><p>Bateriov\u00e9 jednotky se p\u0159ipojuj\u00ed k UPS a monitorov\u00e1n\u00ed syst\u00e9mu. Ob\u011b velikosti nab\u00edzej\u00ed p\u0159\u00edpojn\u00e1 m\u00edsta. Integrovan\u00e9 syst\u00e9my monitoruj\u00ed stav a kondici baterie (nap\u0159. BMS). Extra prostor ve 4U <em>m\u016f\u017ee<\/em> umo\u017e\u0148uj\u00ed p\u0159\u00edstupn\u011bj\u0161\u00ed porty nebo sofistikovan\u00e9 vnit\u0159n\u00ed monitorov\u00e1n\u00ed.<\/p><h2 class=\"wp-block-heading\" id=\"choosing-the-right-size-3u-or-4u-\">V\u00fdb\u011br spr\u00e1vn\u00e9 velikosti: 3U nebo 4U?<\/h2><p>Va\u0161e rozhodnut\u00ed z\u00e1vis\u00ed na slad\u011bn\u00ed schopnost\u00ed baterie s provozn\u00edmi pot\u0159ebami a realitou prost\u0159ed\u00ed. Zva\u017ete tyto faktory:<\/p><h3 class=\"wp-block-heading\" id=\"why-choose-3u-\">Pro\u010d si vybrat 3U?<\/h3><ul class=\"wp-block-list\"><li>Prostor ve stojanu je zna\u010dn\u011b omezen\u00fd.<\/li>\n\n<li>Je t\u0159eba pouze kr\u00e1tkodob\u00e9 z\u00e1lohov\u00e1n\u00ed.<\/li>\n\n<li>Nasazen\u00ed na v\u00edce men\u0161\u00edch m\u00edstech.<\/li>\n\n<li>Konzistence s ostatn\u00edmi za\u0159\u00edzen\u00edmi v racku 3U.<\/li><\/ul><h3 class=\"wp-block-heading\" id=\"why-choose-4u-\">Pro\u010d si vybrat 4U?<\/h3><ul class=\"wp-block-list\"><li>Je vy\u017eadov\u00e1na prodlou\u017een\u00e1 doba z\u00e1lohov\u00e1n\u00ed.<\/li>\n\n<li>Konsolidace kapacity do men\u0161\u00edho po\u010dtu jednotek.<\/li>\n\n<li>Provozn\u00ed prost\u0159ed\u00ed vy\u017eaduje lep\u0161\u00ed tepeln\u00fd management.<\/li>\n\n<li>Pl\u00e1nov\u00e1n\u00ed budouc\u00edho roz\u0161\u00ed\u0159en\u00ed.<\/li><\/ul><h2 class=\"wp-block-heading\" id=\"battery-chemistry-li-ion-vs-vrla\">Chemie baterie: Li-ion vs. VRLA<\/h2><p>Krom\u011b velikosti m\u00e1 na v\u00fdkon, \u017eivotnost, hmotnost a cenu v\u00fdznamn\u00fd vliv i chemick\u00fd slo\u017een\u00ed baterie.<\/p><h3 class=\"wp-block-heading\" id=\"lithium-ion-li-ion-\">Lithium-iontov\u00e9 (Li-ion)<\/h3><p>Li-ion baterie (jako LFP) jsou leh\u010d\u00ed a energeticky vydatn\u011bj\u0161\u00ed ne\u017e tradi\u010dn\u00ed olov\u011bn\u00e9 baterie. Vy\u0161\u0161\u00ed hustota energie umo\u017e\u0148uje v\u011bt\u0161\u00ed kapacitu v kompaktn\u00edch rozm\u011brech (nap\u0159. 3U). Nab\u00edzej\u00ed v\u00fdrazn\u011b del\u0161\u00ed \u017eivotnost, vy\u017eaduj\u00ed m\u00e9n\u011b rutinn\u00ed \u00fadr\u017eby a jsou vybaveny integrovan\u00fdm syst\u00e9mem BMS pro monitorov\u00e1n\u00ed.<\/p><h3 class=\"wp-block-heading\" id=\"vrla-lead-acid\">VRLA Lead-Acid<\/h3><p>VRLA (Valve Regulated Lead-Acid), v\u010detn\u011b AGM\/Gel, je standardn\u00ed tradi\u010dn\u00ed stojanov\u00e1 technologie. VRLA je ve srovn\u00e1n\u00ed s Li-ion t\u011b\u017e\u0161\u00ed, m\u00e1 men\u0161\u00ed energetickou hustotu a p\u0159i stejn\u00e9 kapacit\u011b zab\u00edr\u00e1 v\u00edce m\u00edsta\/hmotnosti. Hlavn\u00ed v\u00fdhoda: Ni\u017e\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed n\u00e1klady. VRLA m\u00e1 v\u0161ak obecn\u011b krat\u0161\u00ed \u017eivotnost (ovliv\u0148uje ji zejm\u00e9na teplo a hlubok\u00e9 vyb\u00edjen\u00ed) a vy\u017eaduje v\u00edce praktick\u00e9 \u00fadr\u017eby ve srovn\u00e1n\u00ed s Li-ion s pokro\u010dilou BMS. Ni\u017e\u0161\u00ed hustota\/hmotnost kapacity znamen\u00e1, \u017ee vysokokapacitn\u00ed VRLA \u010dasto vy\u017eaduje v\u011bt\u0161\u00ed rozm\u011bry (4U+) ne\u017e Li-ion.<\/p><h2 class=\"wp-block-heading\" id=\"installation-maintenance-and-tco\">Instalace, \u00fadr\u017eba a TCO<\/h2><h3 class=\"wp-block-heading\" id=\"installation\">Instalace<\/h3><p>Hmotnost je pro instalaci kl\u00ed\u010dov\u00e1. T\u011b\u017e\u0161\u00ed jednotky 4U mohou vy\u017eadovat v\u00edce pomoci nebo zvedac\u00edho za\u0159\u00edzen\u00ed ne\u017e jednotky 3U.<\/p><h3 class=\"wp-block-heading\" id=\"maintenance\">\u00dadr\u017eba<\/h3><p>Akumul\u00e1tory VRLA vy\u017eaduj\u00ed b\u011b\u017en\u011bj\u0161\u00ed, praktickou \u00fadr\u017ebu. Li-ion se syst\u00e9mem BMS nab\u00edz\u00ed automatizovan\u011bj\u0161\u00ed monitorov\u00e1n\u00ed a m\u00e9n\u011b ru\u010dn\u00edch z\u00e1sah\u016f.<\/p><h3 class=\"wp-block-heading\" id=\"total-cost-of-ownership-tco-\">Celkov\u00e9 n\u00e1klady na vlastnictv\u00ed (TCO)<\/h3><p>Analyzujte celkov\u00e9 n\u00e1klady na vlastnictv\u00ed (TCO), nejen po\u010d\u00e1te\u010dn\u00ed cenu. Zahrnuje:<\/p><ul class=\"wp-block-list\"><li>Po\u010d\u00e1te\u010dn\u00ed kupn\u00ed cena.<\/li>\n\n<li>N\u00e1klady na instalaci.<\/li>\n\n<li>N\u00e1klady na \u00fadr\u017ebu.<\/li>\n\n<li>N\u00e1klady\/frekvence v\u00fdm\u011bny.<\/li><\/ul><p>VRLA: ni\u017e\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed n\u00e1klady, potenci\u00e1ln\u011b vy\u0161\u0161\u00ed TCO (krat\u0161\u00ed \u017eivotnost, n\u00e1ro\u010dn\u011bj\u0161\u00ed \u00fadr\u017eba). Li-ion: vy\u0161\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed n\u00e1klady, potenci\u00e1ln\u011b ni\u017e\u0161\u00ed TCO (del\u0161\u00ed \u017eivotnost, m\u00e9n\u011b \u00fadr\u017eby).<\/p><h2 class=\"wp-block-heading\" id=\"conclusion\">Z\u00e1v\u011br<\/h2><p>3U vs 4U <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/solar-batteries\/\" target=\"_blank\" rel=\"noreferrer noopener\">baterie do serverov\u00e9ho stojanu<\/a><\/strong> v\u00fdb\u011br je rozhoduj\u00edc\u00ed. Velikost ovliv\u0148uje prostor v racku a maxim\u00e1ln\u00ed kapacitu jednotky. Zhodno\u0165te tak\u00e9 chemick\u00e9 slo\u017een\u00ed: VRLA (tradi\u010dn\u00ed, ni\u017e\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed n\u00e1klady).<\/p><p>Va\u0161e kone\u010dn\u00e9 rozhodnut\u00ed je v souladu s provozn\u00edmi pot\u0159ebami:<\/p><ul class=\"wp-block-list\"><li>Dostupn\u00fd prostor v racku<\/li>\n\n<li>Po\u017eadovan\u00e1 doba b\u011bhu z\u00e1lohy\/kapacita<\/li>\n\n<li>Podm\u00ednky prost\u0159ed\u00ed (zejm\u00e9na teplota)<\/li>\n\n<li>Rozpo\u010det (TCO) vs. dlouhodob\u00e9 n\u00e1klady<\/li>\n\n<li>Pl\u00e1ny budouc\u00edho roz\u0161\u00ed\u0159en\u00ed<\/li><\/ul><p>D\u016fkladn\u011b si prohl\u00e9dn\u011bte technick\u00e9 specifikace. Pokud si nejste jisti, pora\u010fte se s odborn\u00edky, abyste zajistili nejlep\u0161\u00ed p\u0159izp\u016fsoben\u00ed. V\u00fdb\u011br spr\u00e1vn\u00e9 velikosti a chemie je strategick\u00fdm rozhodnut\u00edm pro optimalizaci v\u00fdkonu a zaji\u0161t\u011bn\u00ed kontinuity podnik\u00e1n\u00ed.<\/p><p>Kamada Power <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/solar-batteries\/\" target=\"_blank\" rel=\"noreferrer noopener\">V\u00fdrobci bateri\u00ed pro serverov\u00e9 stojany v \u010c\u00edn\u011b<\/a><\/strong>, kter\u00e1 se specializuje na zak\u00e1zkov\u00e9 baterie do serverov\u00fdch stojan\u016f. <strong><a href=\"https:\/\/www.kmdpower.com\/cs\/contact-us\/\">Kontakt <\/a><a href=\"https:\/\/www.kmdpower.com\/cs\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\">kamada <\/a><a href=\"https:\/\/www.kmdpower.com\/cs\/contact-us\/\">nap\u00e1jen\u00ed<\/a><\/strong>. Z\u00edskat nab\u00eddku.<\/p><h2 class=\"wp-block-heading\" id=\"faq\">\u010cASTO KLADEN\u00c9 DOTAZY<\/h2><h3 class=\"wp-block-heading\" id=\"q-can-3u-and-4u-batteries-be-mixed-within-the-same-backup-power-system-\">Ot\u00e1zka: Lze v r\u00e1mci jednoho syst\u00e9mu z\u00e1lo\u017en\u00edho nap\u00e1jen\u00ed kombinovat baterie 3U a 4U?<\/h3><p><strong>A:<\/strong> Obecn\u011b ne. M\u00edch\u00e1n\u00ed bateri\u00ed r\u016fzn\u00fdch velikost\u00ed, kapacit, model\u016f, st\u00e1\u0159\u00ed nebo chemie v r\u00e1mci jednoho z\u00e1lo\u017en\u00edho \u0159et\u011bzce se obvykle nedoporu\u010duje z d\u016fvodu v\u00fdkonnostn\u00edch a bezpe\u010dnostn\u00edch rizik. Osv\u011bd\u010den\u00e9 postupy vy\u017eaduj\u00ed pou\u017e\u00edv\u00e1n\u00ed stejn\u00fdch bateri\u00ed v jednom z\u00e1lo\u017en\u00edm \u0159et\u011bzci, aby byl zaji\u0161t\u011bn optim\u00e1ln\u00ed v\u00fdkon a spolehlivost.<\/p><h3 class=\"wp-block-heading\" id=\"q-does-a-4u-battery-always-offer-longer-runtime-than-a-3u-\">Ot\u00e1zka: M\u00e1 baterie 4U <em>v\u017edy<\/em> nab\u00edz\u00ed del\u0161\u00ed dobu provozu ne\u017e 3U?<\/h3><p><strong>A:<\/strong> Ne nutn\u011b. Zat\u00edmco jednotky 4U maj\u00ed obecn\u011b v\u011bt\u0161\u00ed celkovou kapacitu, vysokokapacitn\u00ed 3U Li-ion baterie m\u016f\u017ee nab\u00eddnout podobnou nebo del\u0161\u00ed dobu provozu ne\u017e n\u011bkter\u00e9 4U modely VRLA. Porovnejte konkr\u00e9tn\u00ed hodnoty Ah\/kWh a zve\u0159ejn\u011bn\u00e9 grafy doby provozu pro va\u0161i z\u00e1t\u011b\u017e.<\/p><h3 class=\"wp-block-heading\" id=\"q-how-does-heat-affect-3u-vs-4u-batteries-differently-based-on-their-size-\">Ot\u00e1zka: Jak se li\u0161\u00ed vliv tepla na baterie 3U a 4U v z\u00e1vislosti na jejich velikosti?<\/h3><p><strong>A:<\/strong> Vysok\u00e9 teploty \u0161kod\u00ed v\u0161em bateri\u00edm a urychluj\u00ed jejich st\u00e1rnut\u00ed. Zat\u00edmco velikost sama o sob\u011b citlivost na chemii nem\u011bn\u00ed, v\u011bt\u0161\u00ed 4U <em>m\u016f\u017ee<\/em> nab\u00edzej\u00ed v\u00edce vnit\u0159n\u00edho prostoru pro lep\u0161\u00ed chlazen\u00ed ne\u017e hust\u00e9 3U. \u00da\u010dinnost se li\u0161\u00ed podle tepeln\u00e9 konstrukce modelu.<\/p><h3 class=\"wp-block-heading\" id=\"q-is-installing-a-4u-battery-significantly-harder-than-a-3u-\">Ot\u00e1zka: Je instalace 4U baterie v\u00fdrazn\u011b obt\u00ed\u017en\u011bj\u0161\u00ed ne\u017e 3U?<\/h3><p><strong>A:<\/strong> Ano, p\u0159edev\u0161\u00edm kv\u016fli hmotnosti. T\u011b\u017e\u0161\u00ed 4U jednotky je n\u00e1ro\u010dn\u011bj\u0161\u00ed bezpe\u010dn\u011b zvednout\/um\u00edstit a \u010dasto vy\u017eaduj\u00ed v\u00edce pomoci nebo specializovan\u00e9 vybaven\u00ed ne\u017e 3U jednotky.<\/p><h3 class=\"wp-block-heading\" id=\"q-what-s-the-main-advantage-of-choosing-a-lithium-ion-battery-in-a-3u-size-\">Ot\u00e1zka: Jak\u00e1 je hlavn\u00ed v\u00fdhoda v\u00fdb\u011bru lithium-iontov\u00e9 baterie ve velikosti 3U?<\/h3><p><strong>A:<\/strong> Maximalizace kapacity p\u0159i omezen\u00e9 plo\u0161e stojanu. Vynikaj\u00edc\u00ed hustota energie Li-ion umo\u017e\u0148uje v\u00fdrazn\u011b vy\u0161\u0161\u00ed kapacitu Ah\/kWh v jednotce 3U ne\u017e u VRLA stejn\u00e9 velikosti, co\u017e je ide\u00e1ln\u00ed v p\u0159\u00edpadech, kdy je prostor v racku omezen\u00fd, ale je pot\u0159eba zna\u010dn\u00e1 doba provozu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Nep\u0159etr\u017eit\u00fd provoz serverov\u00e9 infrastruktury a kl\u00ed\u010dov\u00fdch prost\u0159edk\u016f IT je nejvy\u0161\u0161\u00ed prioritou, zejm\u00e9na v p\u0159\u00edpad\u011b v\u00fdpadku hlavn\u00edho nap\u00e1jen\u00ed. Pro za\u0159\u00edzen\u00ed um\u00edst\u011bn\u00e1 ve stojanech - t\u011bchto vysok\u00fdch sk\u0159\u00edn\u00edch, v nich\u017e je ulo\u017eeno IT vybaven\u00ed - jsou nezbytn\u00e9 spolehliv\u00e9 z\u00e1lo\u017en\u00ed baterie, kter\u00e9 jsou um\u00edst\u011bny p\u0159\u00edmo ve stojanu. Baterie pro serverov\u00e9 stojany se v\u0161ak dod\u00e1vaj\u00ed v r\u016fzn\u00fdch fyzick\u00fdch velikostech. Obvykle se jedn\u00e1 o...<\/p>","protected":false},"author":1,"featured_media":4265,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[19,26],"tags":[],"class_list":["post-4383","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news_catalog","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/comments?post=4383"}],"version-history":[{"count":1,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4383\/revisions"}],"predecessor-version":[{"id":4384,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4383\/revisions\/4384"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media\/4265"}],"wp:attachment":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media?parent=4383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/categories?post=4383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/tags?post=4383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}