{"id":39054,"date":"2019-10-31T22:27:36","date_gmt":"2019-10-31T19:27:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke\/"},"modified":"2019-10-31T22:27:36","modified_gmt":"2019-10-31T19:27:36","slug":"pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke","title":{"rendered":"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/f9bef79a08830d148713955665b987e6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Jedna z rack\u016f vnit\u0159n\u00ed virtualizace. Zam\u011b\u0159ili jsme se na barevnou indikaci kabel\u016f: oran\u017eov\u00e1 ozna\u010duje lich\u00e9 nap\u00e1jen\u00ed, zelen\u00e1 \u2013 sud\u00e9. <\/i><\/p>\n<p>\u010casto zde hovo\u0159\u00edme o \"velk\u00fdch\" polo\u017ek\u00e1ch \u2013 chillerech, DGUs, rozvodn\u00fdch sk\u0159\u00edn\u00edch. Dnes se zam\u011b\u0159\u00edme na \"mali\u010dkosti\" \u2013 z\u00e1suvky v rackech, tak\u00e9 zn\u00e1m\u00e9 jako Power Distribution Unit (PDU). V na\u0161ich datov\u00fdch centrech m\u00e1me v\u00edce ne\u017e 4 tis\u00edce rack\u016f pln\u00fdch IT vybaven\u00ed, tak\u017ee jsem vid\u011bl mnoho r\u016fzn\u00fdch typ\u016f: klasick\u00e9 PDU, \"chytr\u00e9\" s monitorov\u00e1n\u00edm a ovl\u00e1d\u00e1n\u00edm, b\u011b\u017en\u00e9 bloky z\u00e1suvek. Dnes v\u00e1m pov\u00edm, jak\u00e9 typy PDU existuj\u00ed a co je nejlep\u0161\u00ed vybrat v konkr\u00e9tn\u00ed situaci. <noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Jak\u00e9 existuj\u00ed PDU<\/h3>\n<p>\n<b>Jednoduch\u00fd blok z\u00e1suvek.<\/b> Ano, ten, kter\u00fd m\u00e1 ka\u017ed\u00fd doma nebo v kancel\u00e1\u0159i. <br \/>\nForm\u00e1ln\u011b to nen\u00ed \u00fapln\u011b PDU v pr\u016fmyslov\u00e9m smyslu pro pou\u017eit\u00ed v rackech s IT vybaven\u00edm, ale tato za\u0159\u00edzen\u00ed maj\u00ed sv\u00e9 p\u0159\u00edznivce. Jedinou v\u00fdhodou takov\u00e9ho \u0159e\u0161en\u00ed je n\u00edzk\u00e1 cena (cena za\u010d\u00edn\u00e1 od 2 tis\u00edc K\u010d). Mohou b\u00fdt tak\u00e9 u\u017eite\u010dn\u00e9, pokud pou\u017e\u00edv\u00e1te otev\u0159en\u00e9 racky, do kter\u00fdch standardn\u00ed PDU nelze um\u00edstit, a nechcete ztr\u00e1cet jednotky pro horizont\u00e1ln\u00ed PDU. To se op\u011bt t\u00fdk\u00e1 \u00faspor.<\/p>\n<p>Nev\u00fdhod je mnohem v\u00edce: takov\u00e1 za\u0159\u00edzen\u00ed \u010dasto nemaj\u00ed vnit\u0159n\u00ed ochranu proti zkratu a p\u0159et\u00ed\u017een\u00ed, a nav\u00edc nem\u016f\u017eete monitorovat ukazatele a u\u017e v\u016fbec ne \u0159\u00eddit z\u00e1suvky. V\u011bt\u0161inou budou um\u00edst\u011bn\u00e1 dole v racku. Nen\u00ed to nejlep\u0161\u00ed poloha z\u00e1suvek pro p\u0159ipojen\u00ed za\u0159\u00edzen\u00ed. <\/p>\n<p>Obecn\u011b lze \"p\u0159\u00edpojky\" pou\u017e\u00edt, pokud:<\/p>\n<ul>\n<li>m\u00e1te tis\u00edce server\u016f a pot\u0159ebujete u\u0161et\u0159it, <\/li>\n<li>m\u016f\u017eete si dovolit p\u0159ipojovat za\u0159\u00edzen\u00ed naslepo, ani\u017e byste ch\u00e1pali, co se d\u011bje s re\u00e1lnou spot\u0159ebou,<\/li>\n<li>jste p\u0159ipraveni na v\u00fdpadek za\u0159\u00edzen\u00ed. <\/li>\n<\/ul>\n<p>\nTohle nepou\u017e\u00edv\u00e1me, ale m\u00e1me klienty, kte\u0159\u00ed to docela \u00fasp\u011b\u0161n\u011b praktikuj\u00ed. Pravda, stav\u00ed infrastrukturu pro sv\u00e9 slu\u017eby tak, \u017ee porucha des\u00edtek server\u016f nem\u00e1 vliv na funk\u010dnost klientsk\u00e9 aplikace. <\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/a065f555adffbdbfc9cf29fcdf4e628c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Levn\u011b a prakticky.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/b0de3676bf2ec00134dfe95a276cb6b4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Vertik\u00e1ln\u00ed um\u00edst\u011bn\u00ed.<\/i><\/p>\n<p><b>\"Hloup\u00e9\" PDU.<\/b> Jedn\u00e1 se o klasick\u00fd PDU ur\u010den\u00fd pro pou\u017eit\u00ed ve stojanech s IT vybaven\u00edm, co\u017e je ji\u017e dobr\u00e9. Maj\u00ed odpov\u00eddaj\u00edc\u00ed form\u00e1t pro um\u00edst\u011bn\u00ed na stran\u00e1ch stojanu, tak\u017ee je snadn\u00e9 p\u0159ipojit vybaven\u00ed. Existuje vnit\u0159n\u00ed ochrana. Tyto PDU nemaj\u00ed monitoring, co\u017e znamen\u00e1, \u017ee nebudeme v\u011bd\u011bt, kolik za\u0159\u00edzen\u00ed kolik spot\u0159ebov\u00e1v\u00e1 a co se vlastn\u011b uvnit\u0159 d\u011bje. Takov\u00e9 PDU u\u017e t\u00e9m\u011b\u0159 nem\u00e1me a celkov\u011b z masov\u00e9ho pou\u017eit\u00ed postupn\u011b zmiz\u00ed.<\/p>\n<p>Tyto PDU stoj\u00ed od 25 000 korun.<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/fb16a6c0008306f4c6818a8a5a3675be.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>\u201eInteligentn\u00ed\u201c PDU s monitoringem.<\/b> Tato za\u0159\u00edzen\u00ed maj\u00ed \u201emozek\u201c a um\u00ed sledovat parametry energetick\u00e9 spot\u0159eby. Maj\u00ed displej, na kter\u00fd se zobrazuj\u00ed z\u00e1kladn\u00ed ukazatele: nap\u011bt\u00ed, proud a v\u00fdkon. Je mo\u017en\u00e9 je sledovat podle jednotliv\u00fdch skupin z\u00e1suvek: sekc\u00ed nebo bank. K takov\u00e9mu PDU se lze p\u0159ipojit vzd\u00e1len\u011b a nastavit zas\u00edl\u00e1n\u00ed dat do monitorovac\u00edho syst\u00e9mu. Zapisuj\u00ed protokoly, na jejich\u017e z\u00e1klad\u011b lze vid\u011bt v\u0161e, co se s nimi d\u011blo, nap\u0159\u00edklad kdy p\u0159esn\u011b se PDU vypnulo.<\/p>\n<p>Takt\u00e9\u017e um\u00ed po\u010d\u00edtat spot\u0159ebu (kWh) pro technickou evidenci, aby bylo jasn\u00e9, kolik stojan spot\u0159ebov\u00e1v\u00e1 za ur\u010dit\u00e9 \u010dasov\u00e9 obdob\u00ed. <\/p>\n<p>To jsou standardn\u00ed PDU, kter\u00e9 nab\u00edz\u00edme sv\u00fdm klient\u016fm k pron\u00e1jmu, a takov\u00fdch PDU je v\u011bt\u0161ina v na\u0161ich datov\u00fdch centrech.<\/p>\n<p>Pokud se chyst\u00e1te koupit, p\u0159ipravte se zaplatit od 75 000 korun za kus.<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/1525246e5893f9ff3c2b52621adbd467.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/830cec7968a7e6f331d4b2841c276e9d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/5afaacf9bf9a4adb72eae7ec6889c072.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Graf z na\u0161eho intern\u00edho monitorov\u00e1n\u00ed PDU.<\/i><\/p>\n<p><b>\u201eInteligentn\u00ed\u201c PDU s \u0159\u00edzen\u00edm.<\/b> K v\u00fd\u0161e popsan\u00fdm schopnostem tyto PDU p\u0159id\u00e1vaj\u00ed \u0159\u00edzen\u00ed. Nejlep\u0161\u00ed PDU spravuj\u00ed a monitoruj\u00ed ka\u017edou z\u00e1suvku: je mo\u017en\u00e9 je zap\u00ednat\/vyp\u00ednat, co\u017e je pot\u0159ebn\u00e9 v situac\u00edch, kdy je t\u0159eba vzd\u00e1len\u011b restartovat server nap\u00e1jen\u00edm. V tom spo\u010d\u00edv\u00e1 nejen v\u00fdhoda, ale i nebezpe\u010d\u00ed takov\u00fdch PDU: b\u011b\u017en\u00fd u\u017eivatel si m\u016f\u017ee nev\u011bdomky p\u0159ihl\u00e1sit do webov\u00e9ho rozhran\u00ed, n\u011bco zm\u00e1\u010dknout a jedn\u00edm kliknut\u00edm restartovat\/vypnout cel\u00fd syst\u00e9m. Ano, syst\u00e9m dvakr\u00e1t varuje p\u0159ed n\u00e1sledky, ale praxe ukazuje, \u017ee ani alarmy v\u017edy nechr\u00e1n\u00ed p\u0159ed neopatrn\u00fdmi kroky u\u017eivatel\u016f. <\/p>\n<p>Velk\u00fdm probl\u00e9mem \u201einteligentn\u00edch\u201c PDU je p\u0159eh\u0159\u00e1t\u00ed a selh\u00e1n\u00ed \u0159adi\u010de a displeje. PDU se obvykle instaluj\u00ed na zadn\u00ed \u010d\u00e1st stojanu, kde doch\u00e1z\u00ed k v\u00fddechu hork\u00e9ho vzduchu. Je tam horko a \u0159adi\u010de to nevydr\u017e\u00ed. PDU v\u0161ak nen\u00ed t\u0159eba m\u011bnit cel\u00e9, \u0159adi\u010d lze vym\u011bnit za tepla. <\/p>\n<p>A cena je opravdu vysok\u00e1 \u2013 od 120 tis\u00edc rubl\u016f.<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/e60a0801cc84efecbce8a462648dd122.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>O PDU s ovl\u00e1d\u00e1n\u00edm se m\u016f\u017eete dozv\u011bd\u011bt podle indikace pod ka\u017edou z\u00e1suvkou.<\/i><\/p>\n<p>Podle m\u00e9ho n\u00e1zoru je ovl\u00e1d\u00e1n\u00ed PDU ot\u00e1zkou vkusu, zat\u00edmco monitoring je naprost\u00e1 nutnost. Bez n\u011bj nebude mo\u017en\u00e9 sledovat spot\u0159ebu a z\u00e1t\u011b\u017e. Pro\u010d je to d\u016fle\u017eit\u00e9, vysv\u011btl\u00edm za chv\u00edli. <\/p>\n<h3>Jak vypo\u010d\u00edtat po\u017eadovan\u00fd v\u00fdkon PDU?<\/h3>\n<p>\nNa prvn\u00ed pohled se to zd\u00e1 jednoduch\u00e9: v\u00fdkon PDU se vyb\u00edr\u00e1 podle v\u00fdkonu sk\u0159\u00edn\u011b, ale existuj\u00ed nuance. Nap\u0159\u00edklad pot\u0159ebujete sk\u0159\u00ed\u0148 10 kW. V\u00fdrobci PDU nab\u00edzej\u00ed modely s v\u00fdkonem 3, 7, 11, 22 kW. Vyberete 11 kW a bohu\u017eel se m\u00fdl\u00edte. M\u011bli bychom vybrat 22 kW. Pro\u010d pot\u0159ebujeme tak velkou rezervu, te\u010f to vysv\u011btl\u00edm.<\/p>\n<p>Za prv\u00e9, v\u00fdrobci \u010dasto uv\u00e1d\u011bj\u00ed v\u00fdkon PDU v kilowattech, nikoli v kilovoltamp\u00e9rech, co\u017e je spr\u00e1vn\u011bj\u0161\u00ed, ale pro laika to nen\u00ed z\u0159ejm\u00e9.<br \/>\nN\u011bkdy sami v\u00fdrobci p\u0159id\u00e1vaj\u00ed dodate\u010dn\u00e9 zmaten\u00ed:<\/p>\n<p>Zde se nejprve mluv\u00ed o 11 kW,<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/d9f76cadc92a2586358c6a011fc53db2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA v podrobn\u00e9m popisu u\u017e jde o 11000 VA:<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/8c314e7b707d62d7b757787e0f66459f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPokud pracujete s rychlovarn\u00fdmi konvicemi a podobn\u00fdmi spot\u0159ebi\u010di, rozd\u00edl mezi kW a kVA nebude. Sk\u0159\u00ed\u0148 s 10 kW s konvicemi bude spot\u0159ebov\u00e1vat 10 kVA. Ale pokud m\u00e1me IT za\u0159\u00edzen\u00ed, objev\u00ed se koeficient (cos \u03c6): \u010d\u00edm nov\u011bj\u0161\u00ed za\u0159\u00edzen\u00ed, t\u00edm bl\u00ed\u017ee je tento koeficient k jedni\u010dce. V pr\u016fm\u011bru pro IT za\u0159\u00edzen\u00ed m\u016f\u017eeme br\u00e1t 0,93\u20130,95. Proto sk\u0159\u00ed\u0148 s 10 kW s IT bude spot\u0159ebov\u00e1vat 10,7 kVA. Tady je vzorec, podle kter\u00e9ho jsme dostali 10,7 kVA.<\/p>\n<p><i>Ppln.= Pact.\/Cos(\u03c6)<br \/>\n10\/0.93=10.7 kVA<\/i><\/p>\n<p>A jist\u011b se pt\u00e1te, 10,7 \u2013 to je p\u0159ece m\u00e9n\u011b ne\u017e 11. Pro\u010d pot\u0159ebujeme PDU na 22 kW? Je tu druh\u00fd aspekt: \u00farove\u0148 spot\u0159eby elekt\u0159iny za\u0159\u00edzen\u00edm se bude m\u011bnit v z\u00e1vislosti na denn\u00ed dob\u011b, dni v t\u00fddnu. P\u0159i rozd\u011blov\u00e1n\u00ed nap\u00e1jen\u00ed je t\u0159eba tento aspekt zohlednit a p\u0159idat ~10 % na kol\u00eds\u00e1n\u00ed a v\u00fdkyvy, aby v okam\u017eiku zv\u00fd\u0161en\u00ed spot\u0159eby PDU nebylo p\u0159et\u00ed\u017een\u00e9 a nenechalo vybaven\u00ed bez nap\u00e1jen\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/e45b43aeb146aaabfd5915e35a959731.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Graf spot\u0159eby sk\u0159\u00edn\u011b 10 kW za 4 dny.<\/i><\/p>\n<p>Zjist\u00ed se, \u017ee k na\u0161im 10,7 kW mus\u00edme p\u0159i\u010d\u00edst je\u0161t\u011b 10 %, a v\u00fdsledkem je, \u017ee PDU na 11 kW n\u00e1m u\u017e nevyhovuje.<\/p>\n<table>\n<tr>\n<td>Model PDU\n<\/td>\n<td>F\u00e1zov\u00e1n\u00ed\n<\/td>\n<td>V\u00fdkon v\u00fdrobce, kVA\n<\/td>\n<td>V\u00fdkon DtLN, kW\n<\/td>\n<\/tr>\n<tr>\n<td><noindex><a rel=\"nofollow\" href=\"https:\/\/www.se.com\/ru\/ru\/product\/AP8858_APC\/%D1%81%D1%82%D0%BE%D0%B5%D1%87%D0%BD%D1%8B%D0%B9-%D0%B1%D1%80%D0%BF-2g%2C-%D1%81-%D0%BF%D1%80%D0%B8%D0%B1%D0%BE%D1%80%D0%B0%D0%BC%D0%B8-%D1%83%D1%87%D0%B5%D1%82%D0%B0%2C-0u%2C-20%C2%A0a-208%C2%A0%D0%B2%2C-16%C2%A0a-230%C2%A0%D0%B2%2C-%2818%29-c13-%D0%B8-%282%29-c19\/?range=61795-%25d0%25b8%25d0%25b7%25d0%25bc%25d0%25b5%25d1%2580%25d0%25b8%25d1%2582%25d0%25b5%25d0%25bb%25d1%258c%25d0%25bd%25d1%258b%25d0%25b5-%25d0%25b1%25d1%2580%25d0%25bf-%25d1%2581%25d1%2582%25d0%25be%25d0%25b5%25d1%2587%25d0%25bd%25d0%25be%25d0%25b3%25d0%25be-%25d0%25b8%25d1%2581%25d0%25bf%25d0%25be%25d0%25bb%25d0%25bd%25d0%25b5%25d0%25bd%25d0%25b8%25d1%258f&amp;filter=business-3-%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B-%D1%80%D0%B5%D0%B7%D0%B5%D1%80%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE-%D0%BF%D0%B8%D1%82%D0%B0%D0%BD%D0%B8%D1%8F-%D0%B8-%D0%BE%D1%85%D0%BB%D0%B0%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F&amp;parent-category-id=7400&amp;parent-subcategory-id=7410\">AP8858<\/a><\/noindex>\n<\/td>\n<td>1 f\n<\/td>\n<td>3,7\n<\/td>\n<td>3\n<\/td>\n<\/tr>\n<tr>\n<td><noindex><a rel=\"nofollow\" href=\"https:\/\/www.se.com\/ru\/ru\/product\/AP8853_APC\/%D1%81%D1%82%D0%BE%D0%B5%D1%87%D0%BD%D1%8B%D0%B9-%D0%B1%D1%80%D0%BF-2g%2C-%D1%81-%D0%BF%D1%80%D0%B8%D0%B1%D0%BE%D1%80%D0%B0%D0%BC%D0%B8-%D1%83%D1%87%D0%B5%D1%82%D0%B0%2C-0u%2C-32%C2%A0a%2C-230%C2%A0%D0%B2%2C-%2836%29-c13-%D0%B8-%286%29-c19\/?range=61795-%25d0%25b8%25d0%25b7%25d0%25bc%25d0%25b5%25d1%2580%25d0%25b8%25d1%2582%25d0%25b5%25d0%25bb%25d1%258c%25d0%25bd%25d1%258b%25d0%25b5-%25d0%25b1%25d1%2580%25d0%25bf-%25d1%2581%25d1%2582%25d0%25be%25d0%25b5%25d1%2587%25d0%25bd%25d0%25be%25d0%25b3%25d0%25be-%25d0%25b8%25d1%2581%25d0%25bf%25d0%25be%25d0%25bb%25d0%25bd%25d0%25b5%25d0%25bd%25d0%25b8%25d1%258f&amp;filter=business-3-%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B-%D1%80%D0%B5%D0%B7%D0%B5%D1%80%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE-%D0%BF%D0%B8%D1%82%D0%B0%D0%BD%D0%B8%D1%8F-%D0%B8-%D0%BE%D1%85%D0%BB%D0%B0%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F&amp;parent-category-id=7400&amp;parent-subcategory-id=7410\">AP8853<\/a><\/noindex>\n<\/td>\n<td>1 f\n<\/td>\n<td>7,4\n<\/td>\n<td>6\n<\/td>\n<\/tr>\n<tr>\n<td><noindex><a rel=\"nofollow\" href=\"https:\/\/www.se.com\/ru\/ru\/product\/AP8881_APC\/%D1%81%D1%82%D0%BE%D0%B5%D1%87%D0%BD%D1%8B%D0%B9-%D0%B1%D1%80%D0%BF-2g%2C-%D1%81-%D0%BF%D1%80%D0%B8%D0%B1%D0%BE%D1%80%D0%B0%D0%BC%D0%B8-%D1%83%D1%87%D0%B5%D1%82%D0%B0%2C-0u%2C-11%C2%A0%D0%BA%D0%B2%D1%82%2C-230%C2%A0%D0%B2%2C-%2836%29-c13-%D0%B8-%286%29-c19\/?range=61795-%25d0%25b8%25d0%25b7%25d0%25bc%25d0%25b5%25d1%2580%25d0%25b8%25d1%2582%25d0%25b5%25d0%25bb%25d1%258c%25d0%25bd%25d1%258b%25d0%25b5-%25d0%25b1%25d1%2580%25d0%25bf-%25d1%2581%25d1%2582%25d0%25be%25d0%25b5%25d1%2587%25d0%25bd%25d0%25be%25d0%25b3%25d0%25be-%25d0%25b8%25d1%2581%25d0%25bf%25d0%25be%25d0%25bb%25d0%25bd%25d0%25b5%25d0%25bd%25d0%25b8%25d1%258f&amp;filter=business-3-%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B-%D1%80%D0%B5%D0%B7%D0%B5%D1%80%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE-%D0%BF%D0%B8%D1%82%D0%B0%D0%BD%D0%B8%D1%8F-%D0%B8-%D0%BE%D1%85%D0%BB%D0%B0%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F&amp;parent-category-id=7400&amp;parent-subcategory-id=7410\">AP8881<\/a><\/noindex>\n<\/td>\n<td>3 f\n<\/td>\n<td>11\n<\/td>\n<td>9\n<\/td>\n<\/tr>\n<tr>\n<td><noindex><a rel=\"nofollow\" href=\"https:\/\/www.se.com\/ru\/ru\/product\/AP8886_APC\/%D1%81%D1%82%D0%BE%D0%B5%D1%87%D0%BD%D1%8B%D0%B9-%D0%B1%D1%80%D0%BF-2g%2C-%D1%81-%D0%BF%D1%80%D0%B8%D0%B1%D0%BE%D1%80%D0%B0%D0%BC%D0%B8-%D1%83%D1%87%D0%B5%D1%82%D0%B0%2C-0u%2C-22%2C0%C2%A0%D0%BA%D0%B2%D1%82-%2832%C2%A0%D0%B0%29%2C-17%2C3%C2%A0%D0%BA%D0%B2%D1%82-%2824%C2%A0%D0%B0%29%2C-230%C2%A0%D0%B2%2C-%D1%80%D0%BE%D0%B7%D0%B5%D1%82%D0%BA%D0%B8%3A-%2830%29-c13-%D0%B8-%2812%29-c19\/?range=61795-%25d0%25b8%25d0%25b7%25d0%25bc%25d0%25b5%25d1%2580%25d0%25b8%25d1%2582%25d0%25b5%25d0%25bb%25d1%258c%25d0%25bd%25d1%258b%25d0%25b5-%25d0%25b1%25d1%2580%25d0%25bf-%25d1%2581%25d1%2582%25d0%25be%25d0%25b5%25d1%2587%25d0%25bd%25d0%25be%25d0%25b3%25d0%25be-%25d0%25b8%25d1%2581%25d0%25bf%25d0%25be%25d0%25bb%25d0%25bd%25d0%25b5%25d0%25bd%25d0%25b8%25d1%258f&amp;filter=business-3-%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B-%D1%80%D0%B5%D0%B7%D0%B5%D1%80%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE-%D0%BF%D0%B8%D1%82%D0%B0%D0%BD%D0%B8%D1%8F-%D0%B8-%D0%BE%D1%85%D0%BB%D0%B0%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F&amp;parent-category-id=7400&amp;parent-subcategory-id=7410\">AP8886<\/a><\/noindex>\n<\/td>\n<td>3 f\n<\/td>\n<td>22\n<\/td>\n<td>18\n<\/td>\n<\/tr>\n<\/table>\n<p>\n<i>Fragment tabulky v\u00fdkonu konkr\u00e9tn\u00edch model\u016f PDU podle verze DataLine. S p\u0159ihl\u00e9dnut\u00edm k p\u0159evodu z kVA na kW a rezerv\u011b na v\u00fdkyvy b\u011bhem dne.<\/i><\/p>\n<h3>Specifika mont\u00e1\u017ee<\/h3>\n<p>\nNejl\u00e9pe se pracuje s PDU, kdy\u017e je upevn\u011bna vertik\u00e1ln\u011b, vlevo a vpravo od sk\u0159\u00edn\u011b. V takov\u00e9m p\u0159\u00edpad\u011b nezab\u00edr\u00e1 cenn\u00e9 m\u00edsto. Do sk\u0159\u00edn\u011b lze standardn\u011b nainstalovat a\u017e \u010dty\u0159i PDU \u2014 dv\u011b vlevo a dv\u011b vpravo. Nej\u010dast\u011bji se umis\u0165uje jedna PDU na ka\u017ed\u00e9 stran\u011b. Na ka\u017edou PDU p\u0159ipad\u00e1 jeden nap\u00e1jec\u00ed vstup. <\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/e180fb9d97ebecdb9abdeaf3cd4e3f36.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Standardn\u00ed \u201ep\u0159\u00edslu\u0161enstv\u00ed\u201c sk\u0159\u00edn\u011b \u2014 2 PDU a 1 UPS.<\/i><\/p>\n<p>N\u011bkdy ve sk\u0159\u00edni nen\u00ed m\u00edsto pro vertik\u00e1ln\u00ed PDU, nap\u0159\u00edklad pokud se jedn\u00e1 o otev\u0159enou sk\u0159\u00ed\u0148. V takov\u00e9m p\u0159\u00edpad\u011b p\u0159ich\u00e1zej\u00ed na pomoc horizont\u00e1ln\u00ed PDU. Jedinou nev\u00fdhodou je, \u017ee se v tomto p\u0159\u00edpad\u011b mus\u00edme sm\u00ed\u0159it se ztr\u00e1tou 2 a\u017e 4 jednotek ve sk\u0159\u00edni v z\u00e1vislosti na modelu PDU. <\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/5078ae5ea5c3d66b58648b9ba7ed0ee6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Zde PDU vzala 4 jednotky. Tento typ PDU se tak\u00e9 pou\u017e\u00edv\u00e1, kdy\u017e je pot\u0159eba odd\u011blit dva klienty v jedn\u00e9 sk\u0159\u00edni. V tomto p\u0159\u00edpad\u011b bude m\u00edt ka\u017ed\u00fd klient samostatnou dvojici PDU.<\/i><\/p>\n<p>St\u00e1v\u00e1 se, \u017ee sk\u0159\u00ed\u0148 byla vybr\u00e1na jako nedostate\u010dn\u011b hlubok\u00e1 a server vy\u010duhuje a zakr\u00fdv\u00e1 PDU. Nejhor\u0161\u00ed na tom nen\u00ed to, \u017ee \u010d\u00e1st z\u00e1suvek bude nevyu\u017eit\u00e1, ale \u017ee pokud se takov\u00e1 PDU porouch\u00e1, bude nutn\u00e9 ji pochovat p\u0159\u00edmo ve sk\u0159\u00edni, nebo bude t\u0159eba odpojit a vyt\u00e1hnout cel\u00e9 ru\u0161\u00edc\u00ed za\u0159\u00edzen\u00ed. <\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/5883f751e1fcbfae7e6f6991b7fc1272.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ned\u011blejte to \u2014 1.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU a v\u0161ichni ostatn\u00ed: distribuce nap\u00e1jen\u00ed v racku.\" src=\"\/wp-content\/uploads\/2019\/10\/2cebf71685e3bd9be3a8805bc482047a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ned\u011blejte to \u2014 2.<\/i><\/p>\n<h3>P\u0159ipojen\u00ed za\u0159\u00edzen\u00ed<\/h3>\n<p>\nI ta nejmodern\u011bj\u0161\u00ed PDU nepom\u016f\u017ee, pokud je za\u0159\u00edzen\u00ed p\u0159ipojeno nespr\u00e1vn\u011b a nen\u00ed mo\u017enost monitorovat spot\u0159ebu. <\/p>\n<p>Co se m\u016f\u017ee pokazit? Trochu <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/310356\/\">technick\u00fdch znalost\u00ed<\/a><\/noindex>. Na ka\u017edou sk\u0159\u00ed\u0148 p\u0159ich\u00e1zej\u00ed dva nap\u00e1jec\u00ed vstupy, ve standardn\u00ed sk\u0159\u00edni jsou dv\u011b PDU. To znamen\u00e1, \u017ee ka\u017ed\u00e9 PDU m\u00e1 sv\u016fj vlastn\u00ed vstup. Pokud se s jedn\u00edm z t\u011bchto vstup\u016f (\u010dti PDU) n\u011bco stane, sk\u0159\u00ed\u0148 st\u00e1le funguje na druh\u00e9m. Aby tento syst\u00e9m spr\u00e1vn\u011b fungoval, je t\u0159eba dodr\u017eovat ur\u010dit\u00e1 pravidla. Zde jsou hlavn\u00ed (\u00fapln\u00fd seznam najdete <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/193914\/\">zde<\/a><\/noindex>):<\/p>\n<p><b>Za\u0159\u00edzen\u00ed mus\u00ed b\u00fdt p\u0159ipojeno k r\u016fzn\u00fdm PDU. <\/b>Pokud m\u00e1 za\u0159\u00edzen\u00ed jeden nap\u00e1jec\u00ed blok a jednu z\u00e1str\u010dku, p\u0159ipojuje se k PDU prost\u0159ednictv\u00edm UPS (za\u0159\u00edzen\u00ed automatick\u00e9ho p\u0159ep\u00edn\u00e1n\u00ed nap\u00e1jen\u00ed) nebo ATS (Automatic Transfer Switch). V p\u0159\u00edpad\u011b poruchy jednoho z vstup\u016f nebo samotn\u00e9 PDU, UPS p\u0159epne za\u0159\u00edzen\u00ed na zdravou PDU\/vstup. Za\u0159\u00edzen\u00ed si ni\u010deho nev\u0161imne.<\/p>\n<p><b>Dvojit\u00e1 z\u00e1t\u011b\u017e na dvou vstupech\/PDU.<\/b> Z\u00e1lo\u017en\u00ed vstup pom\u016f\u017ee pouze tehdy, pokud ustoj\u00ed zat\u00ed\u017een\u00ed selh\u00e1vaj\u00edc\u00edho vstupu. K tomu je t\u0159eba ponechat rezervy: zat\u011b\u017eovat ka\u017ed\u00fd vstup m\u00e9n\u011b ne\u017e nap\u016fl jeho jmenovit\u00e9 kapacity a celkov\u00e9 zat\u00ed\u017een\u00ed obou vstup\u016f by m\u011blo b\u00fdt m\u00e9n\u011b ne\u017e 100 % nomin\u00e1lu. Pouze v tomto p\u0159\u00edpad\u011b zbyl\u00fd vstup zvl\u00e1dne dvojn\u00e1sobn\u00e9 zat\u00ed\u017een\u00ed. Pokud tomu tak nen\u00ed, trik se p\u0159epnut\u00edm na z\u00e1lohu nebude fungovat \u2013 za\u0159\u00edzen\u00ed z\u016fstane bez p\u0159\u00edvodu. Abychom tomu nejhor\u0161\u00edmu zabr\u00e1nili, my <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/324610\/\">monitorujeme<\/a><\/noindex> tento parametr. <\/p>\n<p><b>Vyv\u00e1\u017een\u00ed zat\u00ed\u017een\u00ed mezi sekcemi PDU.<\/b> Z\u00e1suvky PDU jsou seskupeny do skupin \u2013 sekc\u00ed. Obvykle po 2 nebo 3 kusech. Ka\u017ed\u00e1 sekce m\u00e1 sv\u016fj limit v\u00fdkonu. Je d\u016fle\u017eit\u00e9 ho nep\u0159ekra\u010dovat a rozd\u011blovat zat\u00ed\u017een\u00ed rovnom\u011brn\u011b mezi v\u0161echny sekce. No a tak\u00e9 zde plat\u00ed princip p\u00e1rov\u00fdch z\u00e1t\u011b\u017e\u00ed, o kter\u00e9m jsme hovo\u0159ili v\u00fd\u0161e.<\/p>\n<p><b>Shrnu<\/b><\/p>\n<ol>\n<li>Pokud je to mo\u017en\u00e9, vyb\u00edrejte PDU s funkc\u00ed monitorov\u00e1n\u00ed.<\/li>\n<li>P\u0159i v\u00fdb\u011bru modelu PDU ponechte rezervu v\u00fdkonu.<\/li>\n<li>Instalujte PDU tak, aby bylo mo\u017en\u00e9 jej vym\u011bnit, ani\u017e byste ru\u0161ili IT za\u0159\u00edzen\u00ed.<\/li>\n<li>Spr\u00e1vn\u011b p\u0159ipojujte: p\u0159ipojujte za\u0159\u00edzen\u00ed ke dv\u011bma PDU, nep\u0159et\u011b\u017eujte sekce a pamatujte na p\u00e1rov\u00e9 z\u00e1t\u011b\u017ee. <\/li>\n<\/ol>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/471876\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0434\u043d\u0430 \u0438\u0437 \u0441\u0442\u043e\u0435\u043a \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u0417\u0430\u043c\u043e\u0440\u043e\u0447\u0438\u043b\u0438\u0441\u044c \u0441 \u0446\u0432\u0435\u0442\u043e\u0432\u043e\u0439 \u0438\u043d\u0434\u0438\u043a\u0430\u0446\u0438\u0435\u0439 \u043a\u0430\u0431\u0435\u043b\u0435\u0439: \u043e\u0440\u0430\u043d\u0436\u0435\u0432\u044b\u0439 \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u043d\u0435\u0447\u0435\u0442\u043d\u044b\u0439 \u0432\u0432\u043e\u0434 \u043f\u043e \u043f\u0438\u0442\u0430\u043d\u0438\u044e, \u0437\u0435\u043b\u0435\u043d\u044b\u0439 \u2013 \u0447\u0435\u0442\u043d\u044b\u0439. \u041c\u044b \u0442\u0443\u0442 \u0447\u0430\u0449\u0435 \u0432\u0441\u0435\u0433\u043e \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u043f\u0440\u043e \u201c\u043a\u0440\u0443\u043f\u043d\u044f\u043a\u201d \u2013 \u0447\u0438\u043b\u043b\u0435\u0440\u044b, \u0414\u0413\u0423, \u0413\u0420\u0429. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0440\u0435\u0447\u044c \u043f\u043e\u0439\u0434\u0435\u0442 \u043e \u201c\u043c\u0435\u043b\u043e\u0447\u0430\u0445\u201d \u2013 \u0440\u043e\u0437\u0435\u0442\u043a\u0438 \u0432 \u0441\u0442\u043e\u0439\u043a\u0430\u0445, \u043e\u043d\u0438 \u0436\u0435 Power Distribution Unit (PDU). \u0412 \u043d\u0430\u0448\u0438\u0445 \u0434\u0430\u0442\u0430-\u0446\u0435\u043d\u0442\u0440\u0430\u0445 \u0431\u043e\u043b\u0435\u0435 4 \u0442\u044b\u0441\u044f\u0447 \u0441\u0442\u043e\u0435\u043a, \u0437\u0430\u0431\u0438\u0442\u044b\u0445 \u0418\u0422-\u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435\u043c, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29301,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-39054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0434\u043d\u0430 \u0438\u0437 \u0441\u0442\u043e\u0435\u043a \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/cs\/blog\/news\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke\" 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