{"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\/hr\/blog\/news\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke","title":{"rendered":"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/f9bef79a08830d148713955665b987e6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Jedan od ormari\u0107a unutarnje virtualizacije. Potrudili smo se s bojama oznaka kabela: naran\u010dasta ozna\u010dava neparni unos napajanja, zelena \u2013 parni. <\/i><\/p>\n<p>Ovdje naj\u010de\u0161\u0107e govorimo o \"velikim stvarima\" \u2013 chillere, DGU, GRS. Danas \u0107emo pri\u010dati o \"sitnicama\" \u2013 uti\u010dnice u ormari\u0107ima, poznate kao Power Distribution Unit (PDU). U na\u0161im data centrima imamo vi\u0161e od 4 tisu\u0107e ormari\u0107a punih IT opreme, stoga sam u praksi vidio razne vrste: klasi\u010dne PDU, \"pametne\" \u2013 s monitoringom i upravljanjem, obi\u010dne uti\u010dnice. Danas \u0107u objasniti koje vrste PDU postoje i \u0161to je najbolje odabrati u odre\u0111enoj situaciji. <noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Koje vrste PDU postoje<\/h3>\n<p>\n<b>Jednostavna uti\u010dnica.<\/b> Da, ona koja postoji u svakom domu ili uredu. <br \/>\nFormalno, to nije potpuno PDU u smislu industrijske upotrebe u ormari\u0107ima s IT opremom, ali imaju svoje obo\u017eavatelje. Jedina prednost takvog rje\u0161enja je niska cijena (cijena po\u010dinje od 2000 RUB). Tako\u0111er, mogu biti od pomo\u0107i ako koristite otvorene ormari\u0107e, gdje standardni PDU ne mo\u017ee stati, a ne \u017eelite gubiti jedinice na horizontalni PDU. To se opet vra\u0107a na pitanje \u0161tednje.<\/p>\n<p>Mane su mnogo ve\u0107e: takvi ure\u0111aji nemaju uvijek za\u0161titu od kratkog spoja i preoptere\u0107enja, a monitoring pokazatelja i pogotovo upravljanje uti\u010dnicama nije mogu\u0107e. Naj\u010de\u0161\u0107e \u0107e se nalaziti pri dnu ormari\u0107a. Nije najprikladnije mjesto za spajanje opreme. <\/p>\n<p>Uglavnom, \u201epilot\u201c se mo\u017ee koristiti ako:<\/p>\n<ul>\n<li>imate tisu\u0107e poslu\u017eitelja i trebate u\u0161tedjeti, <\/li>\n<li>mo\u017eete si priu\u0161titi da slijepo spojite opremu, ne razumiju\u0107i \u0161to se zapravo doga\u0111a s realnom potro\u0161njom,<\/li>\n<li>spremni ste na downtime opreme. <\/li>\n<\/ul>\n<p>\nMi to ne koristimo, ali imamo klijente koji to uspje\u0161no prakticiraju. Istina, grade infrastrukturu za svoje usluge na na\u010din da otkaz desetaka poslu\u017eitelja ne utje\u010de na funkcionalnost klijentske aplikacije. <\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/a065f555adffbdbfc9cf29fcdf4e628c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Jeftino i prakti\u010dno.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/b0de3676bf2ec00134dfe95a276cb6b4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Vertikalno postavljanje.<\/i><\/p>\n<p><b>\"Tupi\" PDU.<\/b> Ovo je klasi\u010dni PDU za kori\u0161tenje u ure\u0111ajima u IT ormari\u0107ima, \u0161to je ve\u0107 dobro. Imaju odgovaraju\u0107i oblik za postavljanje sa strane ormara, \u010dime je lako povezivanje opreme. Postoji unutarnja za\u0161tita. Ovakvi PDU-ovi nemaju mogu\u0107nost pra\u0107enja, \u0161to zna\u010di da ne\u0107emo znati koliko oprema tro\u0161i, niti \u0161to se uop\u0107e doga\u0111a unutra. Ovakvih PDU-ova gotovo da i nemamo, a postupno izlaze iz masovne upotrebe.<\/p>\n<p>Cijene ovih PDU-a kre\u0107u se od 25.000 kuna.<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/fb16a6c0008306f4c6818a8a5a3675be.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Pametni PDU-ovi s mogu\u0107no\u0161\u0107u pra\u0107enja.<\/b> Ova ure\u0111aji imaju 'mozak' i mogu pratiti parametre potro\u0161nje energije. Imaju zaslon na kojem se prikazuju osnovni podaci: napetost, trenutna struja i snaga. Mogu ih pratiti po zasebnim grupama uti\u010dnica: sekcijama ili bankama. Na takav PDU se mo\u017ee povezati daljinski, te postaviti slanje podataka u sustav pra\u0107enja. Zapo\u0161ljavaju logove po kojima se mo\u017ee vidjeti sve \u0161to se doga\u0111alo s njom, na primjer, kada je to\u010dno isklju\u010den PDU.<\/p>\n<p>Tako\u0111er, mogu izra\u010dunati potro\u0161nju (kW*h) za tehni\u010dku evidenciju, kako bi se razumjelo koliko rack tro\u0161i tijekom odre\u0111enog vremenskog razdoblja. <\/p>\n<p>To su standardni PDU-ovi koje nudimo na\u0161im klijentima za najam, i ve\u0107ina takvih PDU-a se nalazi u na\u0161im podatkovnim centrima.<\/p>\n<p>Ako planirate kupnju, pripremite se da platite od 75.000 kuna po komadu.<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/1525246e5893f9ff3c2b52621adbd467.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/830cec7968a7e6f331d4b2841c276e9d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/5afaacf9bf9a4adb72eae7ec6889c072.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Grafikon iz na\u0161eg unutarnjeg pra\u0107enja PDU-a.<\/i><\/p>\n<p><b>Pametni PDU-ovi s mogu\u0107no\u0161\u0107u upravljanja.<\/b> Osim ranije opisanih mogu\u0107nosti, ovi PDU-ovi dodaju upravljanje. Najnapredniji PDU-ovi upravljaju i prate svaku uti\u010dnicu: mogu\u0107e je uklju\u010diti\/isklju\u010diti, \u0161to mo\u017ee biti potrebno u situacijama kada postoji potreba za udaljenim ponovnim pokretanjem servera putem napajanja. U tome le\u017ei ljepota, ali i opasnost ovakvih PDU-ova: prosje\u010dni korisnik mo\u017ee nenamjerno u\u0107i u web su\u010delje, ne\u0161to odabrati i jednim potezom ponovo pokrenuti\/isklju\u010diti cijeli sustav. Da, sustav \u0107e dvaput upozoriti na posljedice, ali praksa pokazuje da alarmi ne \u0161tite uvijek od promi\u0161ljenih akcija korisnika. <\/p>\n<p>Veliki problem pametnih PDU-a je pregrijavanje i otkazivanje kontrolera i zaslona. PDU-ovi se obi\u010dno instaliraju na stra\u017enjoj strani ormara, gdje izlazi vru\u0107i zrak. Tamo je vru\u0107e, a kontroleri ne izdr\u017ee. PDU u tom slu\u010daju ne treba mijenjati u cijelosti, kontroler se mo\u017ee promijeniti na 'vru\u0107e'. <\/p>\n<p>Cijena je prili\u010dno visoka \u2013 od 120 tisu\u0107a rubalja.<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/e60a0801cc84efecbce8a462648dd122.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Mo\u017eete saznati informacije o PDU-u s upravljanjem putem indikacije ispod svake uti\u010dnice.<\/i><\/p>\n<p>Po mom mi\u0161ljenju, funkcija upravljanja u PDU-u je stvar ukusa, dok je monitoring neophodan. U suprotnom, ne\u0107ete mo\u0107i pratiti potro\u0161nju i optere\u0107enje. O tome za\u0161to je to va\u017eno, govorit \u0107u malo kasnije. <\/p>\n<h3>Kako izra\u010dunati potrebnu snagu PDU-a?<\/h3>\n<p>\nNa prvi pogled, to izgleda prili\u010dno jednostavno: snaga PDU-a odabire se u skladu sa snagom racka, no postoje posebnosti. Na primjer, potrebna vam je rack snage 10 kW. Proizvo\u0111a\u010di PDU-a nude modele od 3, 7, 11, 22 kW. Odabirate 11 kW, i na\u017ealost, bit \u0107ete u krivu. Trebali bismo odabrati 22 kW. Za\u0161to nam je potreban tako veliki rezerve? Sada \u0107u objasniti.<\/p>\n<p>Prvo, proizvo\u0111a\u010di \u010desto navode snagu PDU-a u kilovatima, a ne u kilovolt-amperima, \u0161to je ispravnije, ali ne o\u010dito za laike.<br \/>\nPonekad proizvo\u0111a\u010di sami unose dodatnu zabunu:<\/p>\n<p>Ovde se prvo govori o 11 kW,<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/d9f76cadc92a2586358c6a011fc53db2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA u detaljnom opisu se ve\u0107 govori o 11000 VA:<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/8c314e7b707d62d7b757787e0f66459f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAko imate posla s kuhalima i sli\u010dnim potro\u0161a\u010dima, razlike izme\u0111u kW i kVA ne\u0107e biti. Rack od 10 kW s kuhalima \u0107e tro\u0161iti 10 kVA. Me\u0111utim, ako imamo IT opremu, tada se pojavljuje koeficijent (cos \u03c6): \u0161to je novija oprema, to je taj koeficijent bli\u017ei jedinici. U prosjeku za IT opremu mo\u017eemo uzeti 0,93\u20130,95. Stoga \u0107e rack od 10 kW s IT-jem tro\u0161iti 10,7 kVA. Ovo je formula kojom smo dobili 10,7 kVA.<\/p>\n<p><i>Pp\u043e\u043b\u043d.= P\u0430\u043a\u0442.\/Cos(\u03c6)<br \/>\n10\/0.93=10.7 kVA<\/i><\/p>\n<p>Postavit \u0107ete razumno pitanje, 10,7 \u2013 to je manje od 11. Za\u0161to nam treba PDU od 22 kW? Postoji jo\u0161 jedan moment: razina potro\u0161nje elektri\u010dne energije opreme mijenja se ovisno o doba dana, danu u tjednu. Prilikom raspodjele napajanja treba uzeti u obzir taj aspekt i dodati ~10% zbog fluktuacija i skokova, tako da u trenutku pove\u0107anja potro\u0161nje PDU ne pre\u0111e u preoptere\u0107enje i ne ostavi opremu bez napajanja.<\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/e45b43aeb146aaabfd5915e35a959731.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Grafikon potro\u0161nje racka od 10 kW tijekom 4 dana.<\/i><\/p>\n<p>Ispostavlja se da uz na\u0161ih 10,7 kW moramo dodati jo\u0161 10%, i na kraju PDU od 11 kW nam vi\u0161e ne odgovara.<\/p>\n<table>\n<tr>\n<td>Model PDU-a\n<\/td>\n<td>Faznost\n<\/td>\n<td>Snaga proizvo\u0111a\u010da, kVA\n<\/td>\n<td>Snaga 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 tablice snage konkretnih modela PDU-a prema verziji DataLine. Uzimaju\u0107i u obzir prebacivanje iz kVA u kW i rezerve za skokove tijekom dana.<\/i><\/p>\n<h3>Karakteristike monta\u017ee<\/h3>\n<p>\nNajlak\u0161e je raditi s PDU-om kada je montiran vertikalno, s lijeve i desne strane racka. U tom slu\u010daju ne zauzima korisni prostor. Standardno, u rack se mo\u017ee instalirati do \u010detiri PDU-a \u2014 dva s lijeve i dva s desne strane. Naj\u010de\u0161\u0107e se postavlja po jedan PDU s svake strane. Na svaki PDU dolazi jedan izvor napajanja. <\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/e180fb9d97ebecdb9abdeaf3cd4e3f36.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Standardna oprema racka \u2014 2 PDU-a i 1 AVR.<\/i><\/p>\n<p>Ponekad u racku nema prostora za vertikalne PDU-ove, na primjer, ako je to otvoreni rack. Tada na pomo\u0107 dolaze horizontalni PDU-ovi. Jedina mana je \u0161to \u0107e se u tom slu\u010daju morati pomiriti s gubitkom od 2 do 4 jedinice u racku, ovisno o modelu PDU-a. <\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/5078ae5ea5c3d66b58648b9ba7ed0ee6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ovdje je PDU zauzeo 4 jedinice. Ova vrsta PDU-a se tako\u0111er koristi kada je potrebno odvojiti dva klijenta unutar istog racka. U tom slu\u010daju, svaki klijent \u0107e imati svoj par PDU-a.<\/i><\/p>\n<p>Ponekad se dogodi da je rack odabran s nedovoljnom dubinom, i server str\u0161i, zaklanjaju\u0107i PDU. Ovdje nije tu\u017eno to \u0161to \u0107e dio uti\u010dnica ostati neiskori\u0161ten, ve\u0107 to \u0161to, ako se taj PDU pokvari, bit \u0107e potrebno zakopati ga direktno u rack, ili isklju\u010diti i izvaditi svu opremu koja smeta. <\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/5883f751e1fcbfae7e6f6991b7fc1272.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ne radite to \u2014 1.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU i sve-sve-sve: distribucija napajanja u ormari\u0107u\" src=\"\/wp-content\/uploads\/2019\/10\/2cebf71685e3bd9be3a8805bc482047a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ne radite to \u2014 2.<\/i><\/p>\n<h3>Povezivanje opreme<\/h3>\n<p>\n\u010cak ni najnapredniji PDU ne\u0107e pomo\u0107i ako je oprema spojena pogre\u0161no i nema mogu\u0107nosti nadgledanja potro\u0161nje. <\/p>\n<p>\u0160to mo\u017ee po\u0107i po zlu? Malo. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/310356\/\">materijal<\/a><\/noindex>. Na svaki rack dolaze dva izvora napajanja, u standardnom racku dva PDU-a. Ispada da svaki PDU ima svoj izvor. Ako se s jednim od izvora (tj. PDU-om) ne\u0161to dogodi, rack \u0107e nastaviti raditi na drugom. Da bi ova shema funkcionirala, potrebno je pridr\u017eavati se nekih pravila. Evo glavnih (cijeli popis mo\u017eete prona\u0107i <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/193914\/\">ovdje<\/a><\/noindex>):<\/p>\n<p><b>Oprema mora biti spojena na razli\u010dite PDU-ove. <\/b>Ako oprema ima jedan izvor napajanja i jedan utika\u010d, onda se PDU-u priklju\u010duje putem AVR-a (ure\u0111aj za automatsko prebacivanje napajanja) ili ATS-a (Automatic Transfer Switch). U slu\u010daju kvara s jednim od izvora ili samim PDU-om, AVR prebacuje opremu na funkcionalni PDU\/izvor. Oprema ni\u0161ta ne\u0107e osjetiti.<\/p>\n<p><b>Parna optere\u0107enja na dva izvora\/PDU-a.<\/b> Rezervni ulaz \u0107e spasiti samo ako izdr\u017ei optere\u0107enje padaju\u0107eg ulaza. Za to je potrebno ostaviti rezervu: optere\u0107ivati svaki ulaz manje od polovine njegovog nominalnog kapaciteta, a ukupno optere\u0107enje na dva ulaza treba biti manje od 100 % od nominala. Tek u tom slu\u010daju \u0107e preostali ulaz izdr\u017eati duplo optere\u0107enje. Ako to nije tako, trik s prebacivanjem na rezervni ulaz ne\u0107e uspjeti \u2014 oprema \u0107e ostati bez napajanja. Da biste sprije\u010dili najgore, mi <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/324610\/\">pratimo<\/a><\/noindex> ovaj parametar. <\/p>\n<p><b>Raspodjela optere\u0107enja izme\u0111u sekcija PDU.<\/b> Uti\u010dnice PDU su grupirane u sekcije. Obi\u010dno se radi o 2 ili 3 komada. Svaka sekcija ima svoj limit po snazi. Va\u017eno je ne prema\u0161iti ga i ravnomjerno raspodijeliti optere\u0107enje po svim sekcijama. Ovdje tako\u0111e va\u017ei pri\u010da o parnim optere\u0107enjima, o kojoj je ranije bilo re\u010di.<\/p>\n<p><b>Zavr\u0161avam<\/b><\/p>\n<ol>\n<li>Ako je mogu\u0107e, odaberite PDU s funkcijom nadzora.<\/li>\n<li>Pri odabiru modela PDU ostavite rezervu po snazi.<\/li>\n<li>Montirajte PDU tako da postoji mogu\u0107nost zamjene, bez brige o IT opremi.<\/li>\n<li>Ispravno se pove\u017eite: pove\u017eite opremu na dva PDU, ne preoptere\u0107ujte sekcije i imajte na umu parna optere\u0107enja. <\/li>\n<\/ol>\n<p>Izvor: <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 5.0.4 - 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\/hr\/blog\/news\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke\" 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