{"id":35725,"date":"2019-10-31T22:05:58","date_gmt":"2019-10-31T19:05:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/davlenie-v-norme-zachem-tsodu-kontrol-podpora-vozduha\/"},"modified":"2019-10-31T22:05:58","modified_gmt":"2019-10-31T19:05:58","slug":"davlenie-v-norme-zachem-tsodu-kontrol-podpora-vozduha","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/davlenie-v-norme-zachem-tsodu-kontrol-podpora-vozduha","title":{"rendered":"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?\u00a0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/36d1796f5324e0c9e69879d2e1013456.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n\u00centr-o persoan\u0103 totul trebuie s\u0103 fie perfect, iar \u00eentr-un centru de date modern, totul trebuie s\u0103 func\u021bioneze ca un ceas elve\u021bian. Niciun component al arhitecturii complexe a sistemelor ingineresti ale centrului de date nu trebuie s\u0103 r\u0103m\u00e2n\u0103 f\u0103r\u0103 aten\u021bia serviciului de exploatare. Acestea sunt considera\u021biile care ne-au ghidat la Linxdatacenter din Saint Petersburg, preg\u0103tindu-ne pentru certificarea Uptime Management &amp; Operations \u00een 2018 \u0219i aduc\u00e2nd toate sistemele centrului de date \u00een conformitate cu cele mai bune standarde mondiale.\u00a0\u00a0<\/p>\n<p>Ast\u0103zi v\u0103 voi povesti cum \u0219i de ce am implementat un sistem de control la distan\u021b\u0103 al presiunii \u0219i al \u201esubpresiunii\u201d aerului \u00een servere. Reamintesc c\u0103, \u00een procesul de preg\u0103tire pentru auditul Uptime Institute, una dintre sarcinile care trebuiau rezolvate a fost problema cur\u0103\u021beniei. Echipa noastr\u0103 a lucrat \u00een dou\u0103 direc\u021bii: cur\u0103\u021benie (despre care colegul meu a povestit deja) \u0219i controlul presiunii \u00een s\u0103lile serverelor. Eu, ca inginer \u0219ef al companiei, am fost \u00eens\u0103rcinat cu a doua. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/linxdatacenter\/blog\/445766\/\">despre cum ne-am luptat cu praful \u00een \u00eenc\u0103perile serverelor)<\/a><\/noindex> \u0219i controlul presiunii \u00een s\u0103lile serverelor. Eu, ca inginer \u0219ef al companiei, am fost \u00eens\u0103rcinat cu a doua.<br \/>\n\u00a0<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>Despre ce este vorba<\/h2>\n<p>\n\u00cen orice camer\u0103 de server exist\u0103 un sistem de ventila\u021bie general\u0103. Acesta este foarte simplu: o ma\u0219in\u0103 de ventila\u021bie lucreaz\u0103 pentru aportul de aer, iar a doua \u2014 pentru evacuarea acestuia. Ambele motoare sunt reglate prin variatoare de frecven\u021b\u0103, ceea ce \u00eenseamn\u0103 c\u0103 se poate schimba frecven\u021ba rota\u021biilor lor \u0219i, astfel, reglementa volumele de aer furnizat\/evacuat.<br \/>\n\u00a0<br \/>\nSistemul are dou\u0103 sarcini:<\/p>\n<ul>\n<li>Asigurarea unui schimb de aer necesar pentru confortul persoanelor din server (num\u0103rul de persoane este stabilit \u00een func\u021bie de specificul camerei),\n<\/li>\n<li>Asigurarea unei presiuni superioare a aerului \u00een server, pentru a nu aspira particule de praf \u00een camer\u0103 prin u\u0219ile deschise \u0219i pentru a men\u021bine cur\u0103\u021benia necesar\u0103.\n<\/li>\n<\/ul>\n<p>\nMa\u0219ina de ventila\u021bie trebuie s\u0103 introduc\u0103 \u00een server mai mult aer dec\u00e2t este evacuat. Astfel se asigur\u0103 o presiune superioar\u0103 \u00een server \u00een raport cu \u00eenc\u0103perile adiacente \u2014 a\u0219a-numita \u201esubpresiune\u201d a aerului. Cu un astfel de sistem, aerul ajunge \u00een server doar prin filtrele ventila\u021biei de aport, iar intrarea aerului nefiltrat \u00een server este exclus\u0103.<\/p>\n<p>Dac\u0103 se \u00eent\u00e2mpl\u0103 invers \u2013 ventila\u021bia de evacuare elimin\u0103 mai mult aer dec\u00e2t furnizeaz\u0103 ventila\u021bia de admisie \u2013 atunci aerul nefiltrat \u00eencepe s\u0103 p\u0103trund\u0103 \u00een sala serverului din spa\u021biile adiacente, ceea ce este adesea cauza prezen\u021bei prafului pe suprafe\u021be \u0219i pe echipamente.<br \/>\n\u00a0<\/p>\n<h2>F\u0103r\u0103 control\u00a0<\/h2>\n<p>\nSe pare c\u0103 este simplu. Cu toate acestea, la \u00eenceputul lucr\u0103rilor de \u00eembun\u0103t\u0103\u021bire a cur\u0103\u021beniei \u00een centrul de date, nu aveam un instrument eficient de control al presiuni de aer. Stabilisem o frecven\u021b\u0103 de admisie mai mare dec\u00e2t frecven\u021ba de evacuare \u0219i apoi f\u0103ceam ajust\u0103ri \u201ela ochi\u201d. U\u0219ile c\u0103tre sala serverului se deschid cu dificultate (de parc\u0103 ar fi atrase \u00een interior) \u2013 semn c\u0103 presiunea este negativ\u0103. Dac\u0103, dimpotriv\u0103, u\u0219ile nu se \u00eenchid complet \u2013 \u00eenseamn\u0103 c\u0103 presiunea este foarte mare. C\u0103ut\u00e2nd un echilibru \u00eentre aceste dou\u0103 st\u0103ri, ne opream undeva la mijloc.<\/p>\n<p>Cu toate acestea, aceast\u0103 abordare nu este fiabil\u0103, iar noi am considerat imposibil s\u0103 ne baz\u0103m pe ea.\u00a0<\/p>\n<p>De ce? Lucr\u00e2nd \u201ela ochi\u201d, este imposibil s\u0103 \u021binem cont de influen\u021ba st\u0103rii filtrelor de aer asupra puterii ventila\u021biei de admisie. Dac\u0103 filtrul este curat \u2013 vom observa anumite valori ale rezisten\u021bei \u0219i volumului de aer admis, \u00eens\u0103 dac\u0103 filtrul este murdar, aceste valori vor diferi semnificativ. Din dinamica deschiderii-\u00eenchiderii u\u0219ii, aceste nuan\u021be nu pot fi monitorizate.\u00a0<\/p>\n<p>De obicei, \u00eenlocuirea filtrului se realizeaz\u0103 printr-un manometru diferen\u021bial mecanic standard, care opre\u0219te ventila\u021bia la o anumit\u0103 etap\u0103 de murd\u0103rire a filtrului (diferen\u021ba de presiune \u00eenainte \u0219i dup\u0103 filtru nu trebuie s\u0103 dep\u0103\u0219easc\u0103 o anumit\u0103 valoare, conform normei de cur\u0103\u021benie a filtrului).\u00a0<\/p>\n<p>A\u0219adar, exist\u0103 o perioad\u0103 lung\u0103 de via\u021b\u0103 a filtrului, \u00een timp ce acesta se murd\u0103re\u0219te treptat, iar manometrul diferen\u021bial standard al ventila\u021biei \u00eel consider\u0103 \u00een continuare potrivit pentru func\u021bionare. Totu\u0219i, puterea ventila\u021biei \u0219i, prin urmare, for\u021ba presiunii variaz\u0103 \u00een func\u021bie de starea filtrului.<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/fe5ef65b624d4c8bdc61134a3f0f7ad6.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Manometrul diferen\u021bial standard al ventila\u021biei.\u00a0<\/i><br \/>\n\u00a0<br \/>\n\u00cen cele din urm\u0103, am ajuns la concluzia c\u0103 procesul de reglare \u0219i control al presiunii \u00een aceste condi\u021bii este prea complicat \u0219i, din nou, ineficient pentru centrul de date.<br \/>\n\u00a0<\/p>\n<h2>Solu\u021bie\u00a0<\/h2>\n<p>\n\u00cen c\u0103utarea r\u0103spunsului la \u00eentrebarea \u201eCe ar trebui s\u0103 facem?\u201d ne-am \u00eendreptat c\u0103tre cele mai bune practici interna\u021bionale, c\u0103l\u0103toria \u00een Stockholm cu o excursie prin centrele de date locale ajut\u00e2ndu-ne \u00een acest demers.<\/p>\n<p>\u00cen unul dintre <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/kompaniya\/data-centers\/\"   title=\"a centrelor de date\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4648\">a centrelor de date<\/a> Am v\u0103zut solu\u021bia de care aveam nevoie \u2013 un manometru diferen\u021bial mecanic a fost instalat la intrarea \u00een sala serverului \u0219i indica diferen\u021ba de presiune \"sal\u0103 server\/coridor\".<\/p>\n<p>Ce este interesant, colegii suedezi folosesc manometre diferen\u021biale la intrarea \u00een s\u0103lile serverelor \u0219i pentru monitorizarea contamin\u0103rii filtrului de ventila\u021bie: schimb\u0103 filtrele atunci c\u00e2nd presiunea de \u00eentoarcere scade, f\u0103r\u0103 a a\u0219tepta semnalul de la manometrul standard al sistemului de ventila\u021bie. Valorile manometrului sunt verificate vizual de c\u0103tre personalul de serviciu \u00een timpul patrul\u0103rii.<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/88782668cc16e78f3b0c87c1e92161df.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nDup\u0103 ce ne-am \u00eentors, am \u00eenceput s\u0103 c\u0103ut\u0103m echipamente similare \u00een Rusia. S-a dovedit c\u0103 manometrele diferen\u021biale sunt folosite de noi \u00een a\u0219a-numitele \"s\u0103li curate\", adic\u0103 \u00een s\u0103li de opera\u021bie, laboratoare etc. Din cauza statutului special al acestor spa\u021bii, pre\u021burile pentru acest echipament erau exorbitante.<\/p>\n<p>\u00cen plus, aveam nevoie nu de un aparat analogic, ci de unul digital, preferabil cu ie\u0219ire 4-20 mA, pentru a putea fi conectat la sistemul de monitorizare al DC-ului. Acest lucru era important pentru stabilirea pragurilor pentru trimiterea de alert\u0103 \u0219i pentru colectarea \u0219i analiza statisticilor.\u00a0<br \/>\n\u00a0<\/p>\n<h2>Cine caut\u0103, g\u0103se\u0219te \u00eentotdeauna.<\/h2>\n<p>\nNe-a sur\u00e2s norocul \u2013 cur\u00e2nd dup\u0103 ce am \u00eenceput c\u0103ut\u0103rile, am reu\u0219it s\u0103 g\u0103sim aparatul necesar: un manometru diferen\u021bial digital cu ecran \u0219i ie\u0219ire pentru conectare la BMS, cu un buget de aproximativ 10.000 de ruble pe unitate.<\/p>\n<p>L-am instalat, l-am configurat \u0219i ne mir\u0103m doar de un singur lucru \u2013 de ce nu ne-am dat seama de asta mai devreme \u0219i de ce aceast\u0103 solu\u021bie nu este standard \u00een proiectele DC.<\/p>\n<p>Arat\u0103 astfel:\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/a54f0974279d52579dbb8d26d6e8a1a8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/bd838b502d61e8d15352431c498e779f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Manometrul electronic \u00een coridorul din exteriorul s\u0103lii serverului, tubul unui canal de m\u0103surare este introdus \u00een sala serverului, iar al doilea canal m\u0103soar\u0103 presiunea din coridor.<\/i><br \/>\n\u00a0<br \/>\nAici este cum apare dispozitivul \u00een sistemul de monitorizare al DC-ului:<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/dd61179c61f08d9eda37d6237cdc0f3e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nA\u0219a arat\u0103 statistica citirilor manometrului \u00een sistemul de monitorizare:<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/6ba268f9ad27a0eb49d25165204ed88b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n\u00a0<br \/>\nConform standardului GOST R ISO 14644-4-2002 \"S\u0103li curate \u0219i medii controlate asociate\", pe care l-am adoptat ca referin\u021b\u0103, \"pentru deschiderea neobstruc\u021bionat\u0103 a u\u0219ilor \u0219i pentru a exclude fluxul de aer contrar neprev\u0103zut din cauza turbulen\u021bei, de obicei, diferen\u021ba de presiune \u00eentre s\u0103lile curate sau zonele curate cu diferite clase de cur\u0103\u021benie trebuie s\u0103 fie \u00eentre 5 \u0219i 20 Pa.\".<\/p>\n<p>Acest interval a fost ales de noi ca norm\u0103 \u00een centrul de date. De \u00eendat\u0103 ce apare o deviere, aceasta este imediat \u00eenregistrat\u0103 \u00een sistem, a\u0219a cum este ar\u0103tat \u00een graficul de mai jos.\u00a0<\/p>\n<p><img decoding=\"async\" alt=\"Presiunea este normal\u0103: de ce are nevoie un centru de date de controlul aliment\u0103rii cu aer?&nbsp;\" src=\"\/wp-content\/uploads\/2019\/06\/71bc5dc48ff4325089e6dfcd72a01c65.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\u021aintele \u00een sc\u0103dere brusc\u0103 de presiune pe grafic reprezint\u0103 o u\u0219\u0103 deschis\u0103 c\u0103tre sala serverelor.\u00a0<\/i><\/p>\n<p>Dac\u0103 citirile senzorului sunt sub setpoint mai mult de 5 minute, \u00eenseamn\u0103 c\u0103 ceva este \u00een neregul\u0103 cu filtrul, a avut loc o situa\u021bie de urgen\u021b\u0103, \u00een esen\u021b\u0103, ceva neobi\u0219nuit. \u00cen mod specific, pe acest grafic, cauza este deschiderea prelungit\u0103 a u\u0219ii pentru a aduce echipamente \u00een \u00eenc\u0103pere.<\/p>\n<h2>Ce am ob\u021binut<\/h2>\n<p>\n<b>\u00cen primul r\u00e2nd<\/b>, un nou nivel de control \u0219i transparen\u021b\u0103 \u00een func\u021bionarea sistemelor inginerie ale centrului de date.\u00a0<\/p>\n<p><b>\u00cen al doilea r\u00e2nd<\/b>, controlul cur\u0103\u021beniei a devenit \u0219i mai eficient: sistemul permite avertizarea sc\u0103derii presiunii de aer \u0219i schimbarea anticipat\u0103 a filtrelor de aer sau eliminarea altor cauze ale sc\u0103derii acesteia.\u00a0<\/p>\n<p><b>\u00cen al treilea r\u00e2nd<\/b>, toate aceste procese sunt monitorizate cu instrumente de precizie matematic\u0103. Colect\u0103m istoria observa\u021biilor \u00een dinamic\u0103 \u0219i avem statistici privind durata real\u0103 de utilizare a filtrelor de aer \u0219i toate situa\u021biile neobi\u0219nuite.<\/p>\n<p>Auditul Management &amp; Operations efectuat \u0219i vizita noastr\u0103 recent\u0103 \u00een centrele de date europene au ar\u0103tat c\u0103 suntem pionieri \u00een acest domeniu nu doar \u00een Rusia, ci \u0219i \u00een UE - astfel de solu\u021bii \u00eent\u00e2lnite rar chiar \u0219i la cei mai justi lideri ai pie\u021bei de centre de date din Europa.<br \/>\n\u00a0<br \/>\nDesigur, acest sistem nu este esen\u021bial pentru func\u021bionarea sistemelor inginerie ale platformei. \u00cen acela\u0219i timp, este un complement extrem de util pentru serviciul de operare \u0219i o excelent\u0103 ilustrare a conformit\u0103\u021bii centrului nostru de date cu standardele \u00eenalte. \u00cen industria noastr\u0103, detaliile conteaz\u0103.<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/linxdatacenter\/blog\/457566\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0447\u0435\u043b\u043e\u0432\u0435\u043a\u0435 \u0432\u0441\u0435 \u0434\u043e\u043b\u0436\u043d\u043e \u0431\u044b\u0442\u044c \u043f\u0440\u0435\u043a\u0440\u0430\u0441\u043d\u043e, \u0430 \u0432 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u043c \u0434\u0430\u0442\u0430-\u0446\u0435\u043d\u0442\u0440\u0435 \u0432\u0441\u0435 \u0434\u043e\u043b\u0436\u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c, \u043a\u0430\u043a \u0448\u0432\u0435\u0439\u0446\u0430\u0440\u0441\u043a\u0438\u0435 \u0447\u0430\u0441\u044b. \u041d\u0438 \u043e\u0434\u0438\u043d \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0441\u043b\u043e\u0436\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u0426\u041e\u0414\u0430 \u043d\u0435 \u0434\u043e\u043b\u0436\u0435\u043d \u043e\u0441\u0442\u0430\u0432\u0430\u0442\u044c\u0441\u044f \u0431\u0435\u0437 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u0441\u043b\u0443\u0436\u0431\u044b \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438. \u0418\u043c\u0435\u043d\u043d\u043e \u044d\u0442\u0438\u043c\u0438 \u0441\u043e\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e\u0432\u0430\u043b\u0438\u0441\u044c \u043c\u044b \u043d\u0430 \u043f\u043b\u043e\u0449\u0430\u0434\u043a\u0435 Linxdatacenter \u0432 \u0421\u0430\u043d\u043a\u0442-\u041f\u0435\u0442\u0435\u0440\u0431\u0443\u0440\u0433\u0435, \u0433\u043e\u0442\u043e\u0432\u044f\u0441\u044c \u043a \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 Uptime Management &amp; Operations \u0432 2018 \u0433\u043e\u0434\u0443 \u0438 \u043f\u0440\u0438\u0432\u043e\u0434\u044f \u0432\u0441\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26765,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\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\/ro\/blog\/news\/davlenie-v-norme-zachem-tsodu-kontrol-podpora-vozduha\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"ro_RO\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0414\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432 \u043d\u043e\u0440\u043c\u0435: \u0437\u0430\u0447\u0435\u043c \u0426\u041e\u0414\u0443 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043f\u043e\u0434\u043f\u043e\u0440\u0430 \u0432\u043e\u0437\u0434\u0443\u0445\u0430? 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