{"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\/et\/blog\/novosti-interneta\/pdu-i-vse-vse-vse-raspredelenie-pitaniya-v-stojke","title":{"rendered":"PDU ja k\u00f5ik muu: toite jagamine riiulis","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/f9bef79a08830d148713955665b987e6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\u00dcks sisemise virtualiseerimise rack. Oled mures kaablite v\u00e4rvikoodi p\u00e4rast: oran\u017e t\u00e4histab p\u00f6\u00f6rdumatut voolu\u00fchendust, roheline \u2013 p\u00f6\u00f6rdumatut. <\/i><\/p>\n<p>Me r\u00e4\u00e4gime siin tavaliselt suurest varustusest \u2013 chillereid, DGUs, GRSh. T\u00e4na r\u00e4\u00e4gime \"pisiasjadest\" \u2013 rakkudest, mida nimetatakse ka Power Distribution Unit (PDU). Meie andmekeskustes on \u00fcle 4000 racki, mis on t\u00e4is IT-seadmeid, ja olen n\u00e4inud palju erinevat: klassikalisi PDU-sid, \"nutikaid\" \u2013 j\u00e4lgimise ja haldamisega, tavalisi pistikbloke. T\u00e4na r\u00e4\u00e4gin, milles PDU-d erinevad ja mida on parem konkreetses olukorras valida. <noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Millised on PDU-d<\/h3>\n<p>\n<b>Lihtne pistikplokk.<\/b> Jah, see sama, mis on iga\u00fchel kodus v\u00f5i kontoris. <br \/>\nFormaalsetel p\u00f5hjustel ei ole see p\u00e4ris PDU t\u00f6\u00f6stuslikus m\u00f5ttes IT-seadmete rackides, kuid ka neil seadmetel on oma austajad. Ainus eelis see, et need on odavad (hind algab 2000 rubla). Need v\u00f5ivad olla abiks, kui kasutad avatud racks, kuhu standardne PDU kuidagi ei mahu, ja ei taha \u00fchikuid kaotada horisontaalsete PDU-de jaoks. See viib tagasi s\u00e4\u00e4stlikkuse k\u00fcsimusele.<\/p>\n<p>Puudusi on palju rohkem: sellistel seadmetel ei ole alati sisemist kaitset l\u00fchise ja \u00fclekoormuse eest, n\u00e4itajaid ei saa j\u00e4lgida ja veel v\u00e4hem juhtida pistikupesasid. Enamasti paiknevad need seadmed kappide alumises osas. See pole k\u00f5ige mugavam pistikupesa asend seadmete \u00fchendamiseks. <\/p>\n<p>\u00dcldiselt saab \"piloteid\" kasutada, kui:<\/p>\n<ul>\n<li>teil on tuhandeid servereid ja soovite s\u00e4\u00e4sta, <\/li>\n<li>v\u00f5ite endale lubada, et seadmeid \u00fckshaaval \u00fchendada, aru saamata, mis toimub tegeliku tarbimisega,<\/li>\n<li>olete valmis seadmete seisakuteks. <\/li>\n<\/ul>\n<p>\nMe ei kasuta seda, kuid meil on kliente, kes seda piisavalt edukalt praktiseerivad. T\u00f5si, nad ehitavad oma teenustele infrastruktuuri nii, et k\u00fcmnete serverite rike ei m\u00f5juta kliendi rakenduse t\u00f6\u00f6d. <\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/a065f555adffbdbfc9cf29fcdf4e628c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Odav ja funktsionaalne.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/b0de3676bf2ec00134dfe95a276cb6b4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Vertikaalne paigutus.<\/i><\/p>\n<p><b>\"Karmid\" PDU.<\/b> Tegemist on klassikalise PDU-ga, mis on m\u00f5eldud IT-seadmestiku jaoks ja see on juba hea. Neil on sobiv vormitegur paigutamiseks riiuli k\u00fclgedele, mis v\u00f5imaldab seadmeid mugavalt \u00fchendada. Seal on sisemine kaitse. Sellistel PDU-del puudub monitooring, seega ei tea me, kui palju seadmed energiat tarbivad ja mis \u00fcldse selle sees toimub. Meil on neist PDU-dest peaaegu enam ei ole ja need on \u00fcldiselt j\u00e4rk-j\u00e4rgult massilisest kasutusest v\u00e4lja minemas.<\/p>\n<p>Selliste PDU-de hind algab 25 000 rubla.<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/fb16a6c0008306f4c6818a8a5a3675be.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>\u201eAhned\u201d PDU-d monitooringuga.<\/b> Neil seadmetel on \u201eajusid\u201d, mis suudavad j\u00e4lgida energiatarbimise parameetreid. Seal on ekraan, kuhu kuvatakse p\u00f5hin\u00e4itajad: pinge, voolutugevus ja v\u00f5imsus. Nende j\u00e4lgimist saab teha eraldi pistikupesa r\u00fchmade l\u00f5ikes: sektsioonide v\u00f5i pangakonto j\u00e4rgi. Sellise PDU-ga saab kaug\u00fchenduse loodud, seadistada andmete saatmise monitooringus\u00fcsteemi. Nad kirjutavad logisid, mille j\u00e4rgi saab vaadata k\u00f5ike, mis temaga juhtus, n\u00e4iteks millal t\u00e4pselt PDU v\u00e4lja l\u00fclitus.<\/p>\n<p>Nende abil on v\u00f5imalik arvestada tarbimist (kWh) tehnilise arvestuse jaoks, et m\u00f5ista, kui palju rack tarbib teatud aja jooksul. <\/p>\n<p>Need on standardsed PDU-d, mida pakume oma klientidele rendiks, ja selliseid PDU-sid on enamik meie andmekeskustes.<\/p>\n<p>Kui soovite osta, valmistuge maksma alates 75 000 rubla t\u00fcki eest.<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/1525246e5893f9ff3c2b52621adbd467.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/830cec7968a7e6f331d4b2841c276e9d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/5afaacf9bf9a4adb72eae7ec6889c072.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Graafik meie sisemisest PDU seirest.<\/i><\/p>\n<p><b>\u201cTargad\u201d PDU-d haldamiseks.<\/b> \u00dclaltoodud oskustele lisandub nende PDU-de puhul haldusv\u00f5imekus. K\u00f5ige vingemad PDU-d haldavad ja j\u00e4lgivad iga pesa: saate sisse ja v\u00e4lja l\u00fclitada, mis on vajalik olukordades, kus tuleb serverit kaugjuhtimise teel toitest taask\u00e4ivitada. Just see teeb need PDU-d nii kasulikeks kui ka ohtlikeks: tavaline kasutaja v\u00f5ib teadmatusest veebiliidesesse siseneda, midagi vajutada ja korraga kogu s\u00fcsteemi taask\u00e4ivitada v\u00f5i v\u00e4lja l\u00fclitada. Jah, s\u00fcsteem hoiatab kahel korral tagaj\u00e4rgede eest, kuid praktika n\u00e4itab, et isegi hoiatused ei kaitse alati m\u00f5tlematute kasutajate tegude eest. <\/p>\n<p>Suure probleem \u201ctarga\u201d PDU puhul on \u00fclekuumenemine ja kontrolleri ning ekraani rike. PDU-d paigaldatakse tavaliselt rack'i tagak\u00fcljele, kohale, kus puhutakse sooja \u00f5hku. Seal on palav ja kontrollerid ei pea vastu. PDU-d ei pea siiski t\u00e4ielikult vahetama, kontrolleri saab kuuma vahetada. <\/p>\n<p>Hinna poolest on need aga t\u00f5eliselt kallid \u2013 alates 120 000 rubla.<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/e60a0801cc84efecbce8a462648dd122.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>PDU-d, millel on juhtimine, on v\u00f5imalik tuvastada iga v\u00e4ljalaskealuse indikaatori j\u00e4rgi.<\/i><\/p>\n<p>Minu arvates on juhtimisfunktsioon PDU-s maitseasi, kuid j\u00e4lgimine on h\u00e4davajalik. Ilma selleta ei saa j\u00e4lgida tarbimist ja koormust. Miks see oluline on, r\u00e4\u00e4gin veidi hiljem. <\/p>\n<h3>Kuidas arvutada vajaliku PDU v\u00f5imsust?<\/h3>\n<p>\nEsmapilgul on see piisavalt lihtne: PDU v\u00f5imsus valitakse vastavalt rack'i v\u00f5imsusele, kuid on n\u00fcansse. Oletame, et vajate 10 kW rack'i. PDU tootjad pakuvad mudeleid 3, 7, 11, 22 kW. Valite 11 kW, ja kahjuks olete vale. Peame valima 22 kW. Miks me vajame nii suurt varu? Selgitan kohe.<\/p>\n<p>Esiteks n\u00e4itavad tootjad sageli PDU v\u00f5imsust kilovattides, mitte kilovolt-ampeerides, mis on \u00f5igem, kuid ei ole tavalisele inimesele ilmselge.<br \/>\nM\u00f5nikord tekitavad tootjad lisaks segadust:<\/p>\n<p>Siin r\u00e4\u00e4gitakse esmalt 11 kW-st,<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/d9f76cadc92a2586358c6a011fc53db2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAga detailkirjelduses on juba juttu 11000 VA-st:<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/8c314e7b707d62d7b757787e0f66459f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKui tegelete veekeetjate ja sarnaste tarbijatega, siis ei ole kW ja kVA vahel suur vahe. 10 kW racks koos veekeetjatega tarbivad 10 kVA. Kui aga tegemist on IT-seadmetega, siis tuleb arvesse v\u00f5tta koefitsienti (cos \u03c6): mida uuem on seade, seda l\u00e4hemal on see koefitsient \u00fchele. IT-seadmete keskmine koefitsient on 0,93\u20130,95. Seet\u00f5ttu tarbib 10 kW rack IT-seadmetega 10,7 kVA. Siin on valem, mille alusel saime 10,7 kVA.<\/p>\n<p><i>Pp = Pact \/ Cos(\u03c6)<br \/>\n10 \/ 0.93 = 10.7 kVA<\/i><\/p>\n<p>Ja te k\u00fcsite \u00f5igustatud k\u00fcsimuse, 10,7 \u2013 see on ju v\u00e4hem kui 11. Miks meil on PDU 22 kW? On veel \u00fcks aspekt: seadmete elektritarbimise tase muutub s\u00f5ltuvalt \u00f6\u00f6ajast ja n\u00e4dalap\u00e4evast. Toitejaotusel tuleb arvestada seda asjaolu ja planeerida ~10% k\u00f5ikumiste ja t\u00f5usude jaoks, et PDU ei l\u00e4heks \u00fcle koormusele ja j\u00e4taks seadmed toiteeta.<\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/e45b43aeb146aaabfd5915e35a959731.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>10 kW racki tarbimise graafik 4 p\u00e4eva jooksul.<\/i><\/p>\n<p>Seega, olemasolevatele 10,7 kW-le peame lisama veel 10%, mis t\u00e4hendab, et 11 kW PDU ei sobi meile enam.<\/p>\n<table>\n<tr>\n<td>PDU mudel\n<\/td>\n<td>Faas\n<\/td>\n<td>Tootja v\u00f5imsus, kVA\n<\/td>\n<td>DtLN v\u00f5imsus, 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>Konkreetsed PDU mudelite v\u00f5imsuse tabelite fragment vastavalt DataLine'i versioonile. Arvesse on v\u00f5etud \u00fcleminekut kVa-st kW-le ja varu p\u00e4eva jooksul h\u00fcpete jaoks.<\/i><\/p>\n<h3>Paigaldusomadused<\/h3>\n<p>\nParim on t\u00f6\u00f6tada PDU-ga, kui see on kinnitatud vertikaalselt, riiuli vasakul ja paremal k\u00fcljel. Sel juhul ei v\u00f5ta see kasulikku ruumi. Riiulisse saab standardsete seadistuste kohaselt paigaldada kuni neli PDU-d - kaks vasakul ja kaks paremal. K\u00f5ige sagedamini paigaldatakse kummalegi poole \u00fcks PDU. Iga PDU-le tuleb \u00fcks toite sisend. <\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/e180fb9d97ebecdb9abdeaf3cd4e3f36.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Standardsed riiuli juurdekuuluvad seadmed \u2014 2 PDU ja 1 AVR.<\/i><\/p>\n<p>M\u00f5nikord ei ole riiulis vertikaalsete PDU-de jaoks ruumi, n\u00e4iteks kui tegemist on avatud riiuliga. Sel juhul tulevad appi horisontaalsed PDU-d. Ainult \u2014 sel juhul tuleb leppida 2 kuni 4 unit'i kaotusega riiulis, s\u00f5ltuvalt PDU mudelist. <\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/5078ae5ea5c3d66b58648b9ba7ed0ee6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Siin PDU v\u00f5ttis 4 unit'i. Sellist t\u00fc\u00fcpi PDU-d kasutatakse ka siis, kui on vaja kahe kliendi eraldamist \u00fches riiulis. Sel juhul on igal kliendil oma eraldi PDU paar.<\/i><\/p>\n<p>Juhtub, et valitakse liiga madal rack ja server ulatub v\u00e4lja, katab PDU. Siin on k\u00f5ige kurvem mitte see, et osa pistikupesi j\u00e4\u00e4b kasutamata, vaid see, et kui selline PDU rikki l\u00e4heb, tuleb see rikki saanud PDU racki sisse matta v\u00f5i tuleb v\u00e4lja l\u00fclitada ning k\u00f5ik segavad seadmed eemaldada. <\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/5883f751e1fcbfae7e6f6991b7fc1272.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\u00c4rge tehke nii \u2014 1.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"PDU ja k\u00f5ik muu: toite jagamine riiulis\" src=\"\/wp-content\/uploads\/2019\/10\/2cebf71685e3bd9be3a8805bc482047a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\u00c4rge tehke nii \u2014 2.<\/i><\/p>\n<h3>Seadmise \u00fchendamine<\/h3>\n<p>\nIeven k\u00f5ige keerukam PDU ei aita, kui seadmed on valesti \u00fchendatud ja pole v\u00f5imalik j\u00e4lgida tarbimist. <\/p>\n<p>Mis v\u00f5ib valesti minna? Natuke <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/310356\/\">materjali<\/a><\/noindex>. Iga racki jaoks on kaks toite sisendi, tavalises rackis on kaks PDU-d. Selgub, et igal PDU-l on oma sisend. Kui \u00fche sisselaskega (loe: PDU) juhtub midagi, siis rack elab edasi teise peal. Selle skeemi toimimiseks tuleb j\u00e4rgida teatud reegleid. Siin on peamised (t\u00e4ieliku nimekirja leiate <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/193914\/\">siit<\/a><\/noindex>):<\/p>\n<p><b>Seadmed peavad olema \u00fchendatud erinevatesse PDU-desse. <\/b>Kui seadmel on \u00fcks toiteplokk ja \u00fcks pistik, siis \u00fchendatakse see PDU-ga l\u00e4bi AVR (automaatne varure\u017eiim) v\u00f5i ATS (automaatne \u00fclekandeseade). Kui \u00fcks sisenditest v\u00f5i ise PDU-lt t\u00f5rkeid esineb, l\u00fclitab AVR seadme tervesse PDU-sse\/sisendisse. Seade ei tunne midagi.<\/p>\n<p><b>Paari koormus kahe sisendi\/PDU puhul.<\/b> Varusisend p\u00e4\u00e4stab vaid siis, kui see talub langenud sisendi koormust. Selleks tuleb j\u00e4tta varu: koormata iga sisend v\u00e4hem kui pool nominaalsest v\u00f5imsusest, ja kahe sisendi kogukoormus peaks olema alla 100% nominaalist. Ainult sel juhul suudab j\u00e4relej\u00e4\u00e4nud sisend taluda kahekordset koormust. Kui teil nii ei ole, siis varusisendile \u00fcleminek ei \u00f5nnestu \u2014 seade j\u00e4\u00e4b toiteeta. Et v\u00e4ltida k\u00f5ige hullemat, me <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/324610\/\">monitoreerime<\/a><\/noindex> seda parameetrit. <\/p>\n<p><b>Koormuse tasakaalustamine PDU sektsioonide vahel.<\/b> PDU pistikupesad on \u00fchendatud r\u00fchmadesse \u2014 sektsioonidesse. Tavaliselt koosnevad need 2 v\u00f5i 3 t\u00fckist. Igal sektsioonil on oma v\u00f5imsuspiir. Oluline on seda mitte \u00fcletada ja koormus peab olema \u00fchtlaselt jaotatud k\u00f5igi sektsioonide vahel. Samuti kehtib siin paari koormuste jutt, millest varem r\u00e4\u00e4giti.<\/p>\n<p><b>Kokkuv\u00f5tteks<\/b><\/p>\n<ol>\n<li>V\u00f5imalusel valige PDU, millel on j\u00e4lgimisfunktsioon.<\/li>\n<li>PDU mudelit valides j\u00e4tke varu v\u00f5imsusele.<\/li>\n<li>Paigaldage PDU nii, et saaksite selle vajadusel v\u00e4lja vahetada ilma IT-seadmeid h\u00e4irimata.<\/li>\n<li>\u00dchendage \u00f5igesti: \u00fchendage seadmed kahte PDU-sse, v\u00e4ltige sektsioonide \u00fclekoormamist ning pidage meeles paari koormusi. <\/li>\n<\/ol>\n<p>Allikas: <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 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