{"id":74068,"date":"2020-03-14T02:42:21","date_gmt":"2020-03-13T23:42:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/avr-i-vse-vse-vse-avtomaticheskij-vvod-rezerva-v-data-czentre"},"modified":"2020-03-14T02:42:21","modified_gmt":"2020-03-13T23:42:21","slug":"avr-i-vse-vse-vse-avtomaticheskij-vvod-rezerva-v-data-czentre","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/avr-i-vse-vse-vse-avtomaticheskij-vvod-rezerva-v-data-czentre","title":{"rendered":"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V predch\u00e1dzaj\u00facom pr\u00edspevku o <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/471876\/\">PDU<\/a><\/noindex> sme hovorili, \u017ee v niektor\u00fdch rackoch je nain\u0161talovan\u00fd AVR \u2013 automatick\u00fd prenos rezervy. Ale naozaj, v datacentri sa AVR in\u0161taluje nielen v racku, ale na celej ceste elektriny. Na r\u00f4znych miestach plnia r\u00f4zne \u00falohy:<\/p>\n<ul>\n<li>v hlavn\u00fdch rozvodn\u00fdch skrink\u00e1ch (GR\u0160) AVR prep\u00edna za\u0165a\u017eenie medzi pr\u00edvodom zo siete a rezervn\u00fdm nap\u00e1jan\u00edm z nafty-gener\u00e1torov\u00fdch jednotiek (DGUs);\u00a0\n<\/li>\n<li>v zdrojoch nep\u0159eru\u0161ovan\u00e9ho nap\u00e1jenia (UPS) AVR prep\u00edna za\u0165a\u017eenie z hlavn\u00e9ho pr\u00edvodu na obch\u00e1dzku (o tom nesk\u00f4r);\u00a0\n<\/li>\n<li>v rackoch AVR prep\u00edna za\u0165a\u017eenie z jedn\u00e9ho pr\u00edvodu na druh\u00fd v pr\u00edpade probl\u00e9mov s jedn\u00fdm z pr\u00edvodov.\u00a0\n<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/a2466b2df6759cf0982df39b1b468e4c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>AVR v \u0161tandardnom sch\u00e9mate nap\u00e1jania d\u00e1tov\u00fdch centier DataLine.<\/i><\/p>\n<p>O tom, ak\u00e9 AVR a kde sa pou\u017e\u00edvaj\u00fa, sa dnes budeme bavi\u0165.\u00a0<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nHlavn\u00e9 typy AVR s\u00fa dva: <b>ATS (automatick\u00fd prep\u00edna\u010d) a STS (statick\u00fd prep\u00edna\u010d)<\/b>. Rozli\u0161uj\u00fa sa pod\u013ea princ\u00edpov \u010dinnosti a prvkovej z\u00e1kladne a pou\u017e\u00edvaj\u00fa sa na r\u00f4zne \u00falohy. Stru\u010dne povedan\u00e9, STS je \u201einteligentnej\u0161\u00ed\u201c ATS. R\u00fdchlej\u0161ie prep\u00edna za\u0165a\u017eenie a \u010dastej\u0161ie sa pou\u017e\u00edva pre vy\u0161\u0161ie za\u0165a\u017eenia\/pr\u00fady. Je flexibilnej\u0161\u00ed na nastavovanie, ale \u201em\u00e1 svoje rozmaru\u201c na sieti: m\u00f4\u017ee sa odmietnu\u0165 pracova\u0165, ak s\u00fa 2 pr\u00edvody nap\u00e1jan\u00e9 z r\u00f4znych zdrojov, napr\u00edklad: z transform\u00e1tora a DGU.\u00a0\u00a0<\/p>\n<h2>AVR v GR\u0160<\/h2>\n<p>\u00a0<br \/>\nHlavn\u00fd AVR d\u00e1tov\u00e9ho centra pred dvadsiatimi rokmi vyzeral ako zlo\u017eit\u00fd syst\u00e9m kontaktov a rel\u00e9.<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/b481efb2947821f650b56e791f8622a9.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>AVR z prelomu 2000-tych rokov.<\/i><\/p>\n<p>Teraz je AVR kompaktn\u00e9 multifunk\u010dn\u00e9 zariadenie.<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/34b839b2402c97916b8cb3681989a798.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSyst\u00e9m AVR v GR\u0160 riadi pr\u00edvodn\u00e9 automaty a d\u00e1va povely na spustenie a zastavenie DGU. Pri za\u0165a\u017een\u00ed nad 2 MW na \u00farovni GR\u0160 nie je rozumn\u00e9 s\u00fa\u0165a\u017ei\u0165 o r\u00fdchlos\u0165. Aj ke\u010f sa prepne r\u00fdchlo, e\u0161te chv\u00ed\u013eu potrv\u00e1, k\u00fdm sa DGU spust\u00ed. V tomto syst\u00e9me sa pou\u017e\u00edvaj\u00fa \u201epomal\u0161ie\u201c ATS a nastavuj\u00fa sa oneskorenia (nastavenia). Funguje to takto: ke\u010f pr\u00edvod do d\u00e1tov\u00e9ho centra z transform\u00e1torov prestane, AVR pr\u00edkazuje zariadeniam: \u201eTransform\u00e1tor, vypni sa. Teraz \u010dak\u00e1me 10 sek\u00fand (nastavenie), DGU, zapni sa, \u010dak\u00e1me e\u0161te 10 sek\u00fand.\u201c\u00a0<\/p>\n<h2>AVR v UPS\u00a0\u00a0<\/h2>\n<p>\nNa pr\u00edklade UPS si uk\u00e1\u017eeme, ako funguje druh\u00fd typ AVR \u2013 STS alebo statick\u00fd prep\u00edna\u010d.<\/p>\n<p>V UPS sa striedav\u00fd pr\u00fad najprv men\u00ed na jednosmern\u00fd v usmer\u0148ova\u010di. Potom sa na invertore op\u00e4\u0165 men\u00ed na striedav\u00fd pr\u00fad, av\u0161ak so stabiln\u00fdmi parametrami. To eliminuje ru\u0161enie a zvy\u0161uje kvalitu energie. Pri v\u00fdpadku hlavn\u00e9ho zdroja nap\u00e1jania <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/310356\/\">UPS prepne<\/a><\/noindex> na bat\u00e9rie a nap\u00e1ja d\u00e1tov\u00e9 centrum, k\u00fdm sa zapne dieselov\u00fd gener\u00e1tor.\u00a0<\/p>\n<p>Ale \u010do robi\u0165, ak zlyh\u00e1 niektor\u00fd z prvkov: usmer\u0148ova\u010d, invertor alebo bat\u00e9rie? Na tento pr\u00edpad m\u00e1 ka\u017ed\u00fd UPS mechanizmus obch\u00e1dzania, teda bypass. S n\u00edm zariadenie pokra\u010duje v prev\u00e1dzke obch\u00e1dzan\u00edm hlavn\u00fdch prvkov priamo z vstupn\u00e9ho nap\u00e4tia. Bypass sa tie\u017e pou\u017e\u00edva, ke\u010f je potrebn\u00e9 vypn\u00fa\u0165 UPS a odosla\u0165 ho na opravu.\u00a0<\/p>\n<p>STS v UPS je potrebn\u00e9 na bezpe\u010dn\u00e9 prech\u00e1dzanie na bypassov\u00fd vstup. Aby sme to zjednodu\u0161ili, STS kontroluje parametre siete na vstupe a v\u00fdstupe, \u010dak\u00e1, k\u00fdm sa zhoduj\u00fa, a prepn\u00fa sa za bezpe\u010dn\u00fdch podmienok.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/98c688d0f0e28a6ef697e096b03d87d1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>AVR v skrini\u00a0<\/h2>\n<p>\nTak\u017ee do skrine s\u00fa priveden\u00e9 dva zdroje nap\u00e1jania. Ak m\u00e1 va\u0161e zariadenie dva zdroje nap\u00e1jania, m\u00f4\u017eete ho bez ob\u00e1v pripoji\u0165 k r\u00f4znym PDU, a v\u00fdpadok jedn\u00e9ho vstupu v\u00e1s nemus\u00ed znepokojova\u0165. A ak m\u00e1 v\u00e1\u0161 server len jeden zdroj nap\u00e1jania?\u00a0<br \/>\nV skrini sa AVR vyu\u017e\u00edva na to, aby zisk z dvoch vstupov nebol zbyto\u010dn\u00fd. Pri probl\u00e9moch s jedn\u00fdm zo vstupov AVR prehlasuje za\u0165a\u017eenie na druh\u00fd vstup.<\/p>\n<blockquote><p>Upozornenie: Ak m\u00f4\u017eete, vyh\u00fdbajte sa zariadeniam s jedn\u00fdm zdrojom nap\u00e1jania, aby ste nevytvorili bod zlyhania v syst\u00e9me. Potom uk\u00e1\u017eeme, ak\u00e9 nev\u00fdhody m\u00e1 tak\u00e1to sch\u00e9ma zapojenia.\u00a0<\/p><\/blockquote>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/3a2e45499d687ffcd983f88add5958cb.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00dalohou AVR v skrini je prepn\u00fa\u0165 zariadenie na pracovn\u00fd vstup tak r\u00fdchlo, aby nedo\u0161lo k preru\u0161eniu jeho prev\u00e1dzky. Potrebn\u00fa r\u00fdchlos\u0165 objavili empiricky: nie viac ako 20 ms. Pozrime sa, ako to zistili.<\/p>\n<p>Poruchy v prev\u00e1dzke serverov\u00e9ho zariadenia sa vyskytuj\u00fa v d\u00f4sledku poklesov nap\u00e4tia (v d\u00f4sledku pr\u00e1c na transform\u00e1torov\u00fdch staniciach, pripojenia ve\u013ek\u00fdch za\u0165a\u017een\u00ed alebo hav\u00e1ri\u00ed). Na ilustr\u00e1ciu, ako zariadenie odol\u00e1va r\u00f4znym amplit\u00fad\u00e1m a d\u013a\u017ekam poklesov nap\u00e4tia, boli vyvinut\u00e9 krivky bezpe\u010dnej prev\u00e1dzky elektrick\u00e9ho zariadenia CBEMA (Computer and Business Equipment Manufacturers Association). Teraz s\u00fa zn\u00e1me ako krivky ITIC (Information Technology Industry Council), ich varianty s\u00fa zahrnut\u00e9 v norm\u00e1ch IEEE 446 ANSI (to je ekvivalent na\u0161ich GOST).<\/p>\n<p>Skontrolujeme pl\u00e1n. Na\u0161ou \u00falohou je zabezpe\u010di\u0165, aby zariadenia fungovali v \u201ezelen\u00fdch z\u00f3nach\u201c. Na krivke ITIC vid\u00edme, \u017ee vybavenie je pripraven\u00e9 \u201eznies\u0165\u201c zlyhanie maxim\u00e1lne 20 ms. Preto sa orientujeme na to, aby AVR vo \u0441\u0442\u043e\u0458\u043a\u0435 reagoval do 20 ms, a e\u0161te lep\u0161ie \u2014 r\u00fdchlej\u0161ie.\u00a0\u00a0\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/fe6c9e359801283c2868ae758421fb33.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Zdroj: <noindex><a rel=\"nofollow\" href=\"https:\/\/www.meandr.ru\/itic\">meandr.ru<\/a><\/noindex>.<\/i><\/p>\n<p><b>Zariadenie AVR<\/b>. \u0160tandardn\u00fd AVR (ATS) v na\u0161om d\u00e1tovom centre zaber\u00e1 1 jednotku a zvl\u00e1da za\u0165a\u017eenie 16 A.\u00a0<\/p>\n<p>Na displeji vid\u00edme, od ktor\u00e9ho vstupu je AVR nap\u00e1jan\u00fd a ko\u013eko spotreb\u00favaj\u00fa pripojen\u00e9 zariadenia v amp\u00e9roch. Samostatn\u00fdm tla\u010didlom vyber\u00e1me, \u010di d\u00e1me prednos\u0165 prv\u00e9mu alebo druh\u00e9mu vstupu. Na pravej strane s\u00fa porty na pripojenie k AVR:\u00a0<\/p>\n<ul>\n<li>Ethernet port \u2014 pripojenie na monitorovanie;\n<\/li>\n<li>S\u00e9riov\u00fd port \u2014 pr\u00edstup cez notebook a kontrola z\u00e1znamov, \u010do sa deje;\u00a0\n<\/li>\n<li>USB \u2014 vlo\u017ei\u0165 flash disk a aktualizova\u0165 firmv\u00e9r.\u00a0\n<\/li>\n<\/ul>\n<p>\nPorty s\u00fa zamenite\u013en\u00e9: v\u0161etky tieto oper\u00e1cie m\u00f4\u017eeme vykona\u0165, ak m\u00e1me pr\u00edstup aspo\u0148 k jedn\u00e9mu z nich.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/db6b2698981c08e3cae0402a757dab09.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa zadnej strane s\u00fa konektory na pripojenie hlavn\u00e9ho a z\u00e1lo\u017en\u00e9ho vstupu a z\u00e1suvkov\u00e1 skupina na pripojenie IT vybavenia.<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/6e44f4fd995ba6e30a6f1c629c11b9db.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPodrobn\u00e9 \u0161pecifik\u00e1cie AVR si pozrieme cez webov\u00e9 rozhranie. Tam nastavujeme citlivos\u0165 prep\u00ednania a s\u00fa vidite\u013en\u00e9 z\u00e1znamy.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/370a1d72c373d86738fa7676972b2cef.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Webov\u00e9 rozhranie AVR.<\/i><\/p>\n<p><b>In\u0161tal\u00e1cia a pripojenie AVR<\/b>. Pri in\u0161tal\u00e1cii AVR sa odpor\u00fa\u010da umiestni\u0165 ho do stredu \u0441\u0442\u043e\u0439\u043a\u0438. Ak vopred nevieme v\u00fdbavu \u0441\u0442\u043e\u0439\u043a\u0438, zariadenie s jedn\u00fdm zdrojom nap\u00e1jania dok\u00e1\u017ee dosiahnu\u0165 k\u00e1ble aj z dolnej, aj z hornej \u010dasti.\u00a0\u00a0<\/p>\n<p>Ale existuj\u00fa aj nuansy: h\u013abka \u0161tandardnej \u0441\u0442\u043e\u0439\u043a\u0438 je omnoho v\u00e4\u010d\u0161ia ako h\u013abka AVR. Odpor\u00fa\u010dame umiestni\u0165 ho \u010do najbli\u017e\u0161ie k chladn\u00e9mu koridoru z dvoch d\u00f4vodov:<\/p>\n<ol>\n<li>Pr\u00edstup k prednej panela. Ak umiestnime AVR bli\u017e\u0161ie k tepl\u00e9mu koridoru, uvid\u00edme indik\u00e1ciu, ale nebudeme sa m\u00f4c\u0165 pripoji\u0165 cez porty. To znamen\u00e1, \u017ee nebudeme m\u00f4c\u0165 skontrolova\u0165 z\u00e1znamy alebo re\u0161tartova\u0165 zariadenie.\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/77f79924003d1024e9bfb81072d483c1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/5f8c4092a0f8bff5802ec42abd79839c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Kdesi tam, v hlbok\u00fdch \u010dastiach, blik\u00e1 AVR \u2014 k portu sa u\u017e ned\u00e1 dosiahnu\u0165.<\/i>\n<\/li>\n<li>Chladenie. AVR sa odpor\u00fa\u010da pou\u017e\u00edva\u0165 pri teplote nie viac ako 45 \u00b0C. Nem\u00e1 vlastn\u00e9 ventil\u00e1tory na chladenie, je to len kovov\u00e9 zariadenie s elektronick\u00fdm vn\u00fatrom. Udr\u017euj\u00fa po\u017eadovan\u00fa teplotu dvoma sp\u00f4sobmi:\u00a0\n<\/li>\n<\/ol>\n<p><\/p>\n<ul>\n<li>pr\u00faden\u00edm vzduchu z vonkaj\u0161\u00edch zdrojov;\u00a0\n<\/li>\n<li>upevneniami, ktor\u00e9 odv\u00e1dzaj\u00fa prebyto\u010dn\u00e9 teplo.\n<\/li>\n<\/ul>\n<p>\nAk nain\u0161talujete AVR na strane hor\u00faceho koridoru a navy\u0161e ho zaist\u00edte kol\u00e1\u010dom zo serverov, dostaneme pec. V najlep\u0161om pr\u00edpade AVR zhor\u00ed a strat\u00ed spojenie s vonkaj\u0161\u00edm svetom, v najhor\u0161om pr\u00edpade za\u010dne chaoticky prep\u00edna\u0165 za\u0165a\u017eenie alebo ho jednoducho odpoj\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/2213c7861d72f2f97ea5f8035556e4b5.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>AVR sa nach\u00e1dza tv\u00e1rou k hor\u00facemu koridoru.<\/i><\/p>\n<blockquote><p>Bol jeden pr\u00edpad. In\u017einier pri prehliadke po\u010dul neobvykl\u00e9 cvakanie.<br \/>\nV h\u013abkach hor\u00faceho koridoru pod hromadou serverov bol objaven\u00fd AVR, ktor\u00fd sa neust\u00e1le prep\u00ednal z hlavn\u00e9ho pr\u00edvodu na rezervn\u00fd.\u00a0<\/p>\n<p>AVR bol vymenen\u00fd. Logy uk\u00e1zali, \u017ee cel\u00fa jednu t\u00fd\u017ede\u0148 sa prep\u00ednal ka\u017ed\u00fa sekundu \u2014 celkovo viac ako pol mili\u00f3na prepnut\u00ed. Takto to <noindex><a rel=\"nofollow\" href=\"https:\/\/youtu.be\/BtXqXXvHcks\">bolo<\/a><\/noindex>\n<\/p><\/blockquote>\n<p><\/p>\n<h3>Ak\u00e9 \u010fal\u0161ie AVR sa v skrini pou\u017e\u00edvaj\u00fa<\/h3>\n<p>\n<b>Vstupn\u00fd ATS pre skri\u0148u<\/b>. V na\u0161om DC tak\u00fd AVR funguje ako jedin\u00fd zdroj distrib\u00facie nap\u00e1jania v skrini: pracuje ako AVR+PDU. Zaber\u00e1 nieko\u013eko jednotiek, udr\u017e\u00ed za\u0165a\u017eenie 32 A, prip\u00e1ja sa priemyseln\u00fdmi konektormi a m\u00f4\u017ee nap\u00e1ja\u0165 a\u017e 6 kW zariadenia. Je mo\u017en\u00e9 ho pou\u017ei\u0165, ke\u010f nie je mo\u017enos\u0165 namontova\u0165 \u0161tandardn\u00e9 PDU a jednopanelov\u00e9 zariadenia v skrini nezvl\u00e1daj\u00fa kritick\u00e9 za\u0165a\u017eenia.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/1b366a2a7b31d633266ec3e0df0495fe.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>Stojanov\u00fd STS<\/b>. STS v skrini sa pou\u017e\u00edva pre zariadenia citliv\u00e9 na kol\u00edsanie nap\u00e4tia. Tento AVR sa prep\u00edna r\u00fdchlej\u0161ie ako ATS.\u00a0<br \/>\n\u00a0<br \/>\n<img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/e45afa3bd64fdd094c2feb591eac45d8.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Tento konkr\u00e9tny STS zaber\u00e1 6 jednotiek a m\u00e1 trochu \u201evintage\u201c rozhranie.<\/i><\/p>\n<p><b>Mini-AVR<\/b>. Existuj\u00fa aj tak\u00e9 mali\u010dkosti, ale u n\u00e1s v DC tak\u00e9 nie s\u00fa. Je to mini-AVR pre jeden server.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/ee1b9c7c144ade76b10ab6d1eb6267e1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Tento AVR sa prip\u00e1ja priamo do nap\u00e1jacieho zdroja servera.<\/i><\/p>\n<h3>Ako h\u013ead\u00e1me ide\u00e1lny AVR<\/h3>\n<p>\nTestujeme ve\u013ea r\u00f4znych AVR a kontrolujeme, ako sa spr\u00e1vaj\u00fa pri vysok\u00fdch teplot\u00e1ch. <\/p>\n<p>Takto t\u00fdrame AVR, aby sme to overili:\u00a0<\/p>\n<ul>\n<li>pripoj\u00edme k nemu registr\u00e1tor kvality siete, server a nieko\u013eko \u010fal\u0161\u00edch zariaden\u00ed na za\u0165a\u017eenie;\n<\/li>\n<li>izolujeme skrinku krytkami alebo f\u00f3liou, aby sme dosiahli vysok\u00fa teplotu;\n<\/li>\n<li>zohrievame na 50 \u00b0C;\n<\/li>\n<li>po jednom odpojujeme pr\u00edvody 20-kr\u00e1t;\n<\/li>\n<li>sledujeme, \u010di neboli v\u00fdpadky nap\u00e1jania, ako sa m\u00e1 server;\n<\/li>\n<li>ak AVR test prejde \u2014 zohrievame na 70 \u00b0C.\n<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/d95341812bc80a0de04bda92cf9a93db.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Foto tepeln\u00e9ho obrazu z jedn\u00e9ho z testov.<\/i><\/p>\n<p><img decoding=\"async\" alt=\"AVR a v\u0161etko, v\u0161etko, v\u0161etko: automatick\u00fd prenos rezervy v d\u00e1tovom centre\" src=\"\/wp-content\/uploads\/2020\/03\/75d75c0727753e1184b95569322268dc.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Analyz\u00e1tor siete zaznamen\u00e1va nap\u00e4tie v \u010dase. Na z\u00e1zname vid\u00edme, ako dlho trvalo prep\u00ednanie: v tomto momente sa s\u00ednusoida preru\u0161a.<\/i><\/p>\n<p>Mimochodom, testujeme AVR: otestujeme va\u0161e zariadenie na odolnos\u0165 a povieme, \u010do sa n\u00e1m podarilo \ud83d\ude09\u00a0<\/p>\n<h4>AVR v stojane: skryt\u00e1 hrozba<\/h4>\n<p>\nHlavn\u00fd probl\u00e9m s AVR v stojane spo\u010d\u00edva v tom, \u017ee dok\u00e1\u017ee len prep\u00edna\u0165 za\u0165a\u017eenie z hlavn\u00e9ho na z\u00e1lo\u017en\u00fd vstup, ale nechr\u00e1nia pred skratom alebo pre\u0165a\u017een\u00edm. Ak d\u00f4jde na nap\u00e1jacom bloku k skratov\u00e9mu pr\u00fadu, automatick\u00fd vyp\u00edna\u010d na vy\u0161\u0161ej \u00farovni sa aktivuje: na PDU alebo v rozvodnej skriniach. V d\u00f4sledku toho sa jeden vstup vypne, AVR to zist\u00ed a prepne sa na druh\u00fd vstup. Ak skrat st\u00e1le pretrv\u00e1va, automatick\u00fd vyp\u00edna\u010d druh\u00e9ho vstupu sa aktivuje. Nakoniec m\u00f4\u017ee v d\u00f4sledku probl\u00e9mu na jednom zariaden\u00ed d\u00f4js\u0165 k v\u00fdpadku cel\u00e9ho stojana.<\/p>\n<p>Tak e\u0161te raz opakujem: dvakr\u00e1t si rozmyslite, sk\u00f4r ne\u017e nain\u0161talujete AVR do stojana a pou\u017eijete zariadenie s jedn\u00fdm nap\u00e1jac\u00edm blokom.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/492016\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u043f\u043e\u0441\u0442\u0435 \u043f\u0440\u043e PDU \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u0438, \u0447\u0442\u043e \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0441\u0442\u043e\u0439\u043a\u0430\u0445 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d \u0410\u0412\u0420 \u2014\u00a0 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0432\u0432\u043e\u0434 \u0440\u0435\u0437\u0435\u0440\u0432\u0430. \u041d\u043e \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u0432 \u0426\u041e\u0414\u0435 \u0410\u0412\u0420 \u0441\u0442\u0430\u0432\u044f\u0442 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0441\u0442\u043e\u0439\u043a\u0435, \u043d\u043e \u0438 \u043d\u0430 \u0432\u0441\u0435\u043c \u043f\u0443\u0442\u0438 \u044d\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u0442\u0432\u0430. \u0412 \u0440\u0430\u0437\u043d\u044b\u0445 \u043c\u0435\u0441\u0442\u0430\u0445 \u043e\u043d\u0438 \u0440\u0435\u0448\u0430\u044e\u0442 \u0440\u0430\u0437\u043d\u044b\u0435 \u0437\u0430\u0434\u0430\u0447\u0438: \u0432 \u0433\u043b\u0430\u0432\u043d\u044b\u0445 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0449\u0438\u0442\u0430\u0445 (\u0413\u0420\u0429) \u0410\u0412\u0420 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043c\u0435\u0436\u0434\u0443 \u0432\u0432\u043e\u0434\u043e\u043c \u043e\u0442 \u0433\u043e\u0440\u043e\u0434\u0430 \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":74069,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-74068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u043f\u043e\u0441\u0442\u0435 \u043f\u0440\u043e PDU \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u0438, \u0447\u0442\u043e \u0432 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