{"id":30030,"date":"2019-10-31T21:33:18","date_gmt":"2019-10-31T18:33:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/koe-chto-pro-raspredelyonnye-data-tsentry-dlya-biznesa\/"},"modified":"2019-10-31T21:33:18","modified_gmt":"2019-10-31T18:33:18","slug":"koe-chto-pro-raspredelyonnye-data-tsentry-dlya-biznesa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/koe-chto-pro-raspredelyonnye-data-tsentry-dlya-biznesa","title":{"rendered":"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/444544\/\"><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/f21856ccef114e370bc79a87dad75b34.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\nRecentemente, internetul a \u00eemplinit 30 de ani. \u00cen acest r\u0103stimp, nevoile informa\u021bionale \u0219i digitale ale afacerilor au crescut at\u00e2t de mult \u00eenc\u00e2t ast\u0103zi nu mai vorbim doar despre servere corporative \u0219i nici m\u0103car despre necesitatea de a opera \u00eentr-un centru de date, ci despre \u00eenchirierea unei re\u021bele \u00eentregi de centre de date, \u00eempreun\u0103 cu un set de servicii aferente. De fapt, nu este vorba doar de proiecte globale cu volume mari de date (gigan\u021bii au propriile lor centre de date), ci \u0219i de companii de dimensiuni medii care \u00ee\u0219i actualizeaz\u0103 frecvent lista de produse (de exemplu, magazine online) \u0219i de servicii cu un schimb rapid de date (de exemplu, b\u0103nci). <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>De ce are afacerea nevoie de un sistem de centre de date distribuite <\/h2>\n<p>\nUn astfel de sistem este format din complexe IT, distribuite geografic conform principiului: un centru de date principal \u0219i centre de date regionale. Ele sunt ini\u021bial echipate cu g\u00e2ndul la fluxurile informa\u021bionale \u0219i procesele de afaceri ale companiilor moderne \u00een dezvoltare \u0219i asigur\u0103 continuitatea acestor fluxuri \u0219i procese.<\/p>\n<h3>\u258dDe ce distribuite? <\/h3>\n<p>\n\u00cen primul r\u00e2nd, din cauza riscului de a sparge toate ou\u0103le care sunt puse \u00eentr-un singur co\u0219. Acum, solu\u021biile rezistente la defec\u021biuni sunt foarte c\u0103utate, deoarece pot asigura o func\u021bionare complet continu\u0103 a aplica\u021biilor, serviciilor \u0219i site-urilor corporative \u00een orice condi\u021bii. Chiar \u0219i \u00een cazul unor situa\u021bii extreme. Aceste infrastructuri de calcul trebuie s\u0103 asigure nu doar p\u0103strarea datelor de calitate, ci \u0219i s\u0103 minimizeze la maxim timpul de nefunc\u021bionare al serviciilor IT ale companiei (adic\u0103 al afacerii) at\u00e2t \u00een timpul epidemiei de bloc\u0103ri de c\u0103tre Roskomnadzor, c\u00e2t \u0219i \u00een cazul unor catastrofe naturale sau tehnologice \u0219i \u00een orice alte circumstan\u021be excep\u021bionale. Nu \u00eent\u00e2mpl\u0103tor, aceste solu\u021bii sunt denumite solu\u021bii rezistente la dezastre (Disaster Recovery). <\/p>\n<p>Pentru aceasta, loca\u021biile complexelor de calcul care deservesc compania trebuie s\u0103 fie distan\u021bate \u00eentre ele pe o distan\u021b\u0103 sigur\u0103 conform unei scheme stabilite (vezi tabelul \u0219i ilustra\u021bia de mai jos). Dac\u0103 este necesar, se utilizeaz\u0103 un plan de recuperare \u00een caz de dezastre (disaster recovery plan, DR-Plan) \u0219i transferul automat al serviciilor clientului pe o alt\u0103 loca\u021bie a re\u021belei, folosind metode rezistente la defec\u021biuni \u0219i solu\u021bii software optime pentru fiecare caz \u00een parte (replicarea datelor, backup \u0219i altele).<\/p>\n<p>\u00cen al doilea r\u00e2nd, pentru a cre\u0219te performan\u021ba. \u00cen mod normal (nu \u00een situa\u021bii de urgen\u021b\u0103, dar \u00een momente de v\u00e2rf) centrele de date distribuite sunt menite s\u0103 \u00eembun\u0103t\u0103\u021beasc\u0103 performan\u021ba companiei \u0219i s\u0103 minimizeze pierderile de informa\u021bii (de exemplu, \u00een cazul atacurilor DDoS). Aici intervin complexele de echilibrare a sarcinii \u00eentre nodurile de calcul: sarcina se redistribuie uniform, iar \u00een cazul unei defec\u021biuni a unuia dintre noduri, func\u021biile sale vor fi preluate de alte noduri din complex.<\/p>\n<p>\u00cen al treilea r\u00e2nd, pentru a asigura o func\u021bionare eficient\u0103 a filialelor la distan\u021b\u0103. Pentru companiile cu numeroase subdiviziuni, se aplic\u0103 solu\u021bii de stocare \u0219i procesare centralizat\u0103 a informa\u021biilor cu replicare distribuit\u0103 geografic. Fiecare filial\u0103 poate lucra cu propriul s\u0103u volum de date, care va fi sintetizat \u00eentr-o baz\u0103 unic\u0103 a biroului central. Modific\u0103rile din baza central\u0103 se reflect\u0103, la r\u00e2ndul lor, \u0219i \u00een bazele subdiviziunilor.<\/p>\n<h3>\u258dStructura centrelor de date distribuite<\/h3>\n<p>\nCentrele de date geografic distribuite sunt \u00eemp\u0103r\u021bite \u00een patru tipuri. Pentru utilizatorul extern, ele apar ca un sistem unificat: managementul se desf\u0103\u0219oar\u0103 printr-o singur\u0103 interfa\u021b\u0103 de servicii \u0219i suport. <\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/w-\/4l\/k8\/w-4lk893p2u9uysdi-radtg5upk.png\"><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/e0b91218a46512ea74492e96a33c1340.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/345cb2c0eff936ddfc079117bd97f57b.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Centrele de date geografic distribuite<\/i><\/p>\n<h3>\u258dObiective pentru care afacerea are nevoie de centre de date distribuite:<\/h3>\n<p>\nContinuitatea proces\u0103rii datelor. Continuitatea este necesar\u0103 pentru a rezolva problemele tehnice inevitabile f\u0103r\u0103 a opri procesele de afaceri chiar \u0219i \u00een cazul defec\u021biunii unor canale de comunica\u021bie \u0219i a unei p\u0103r\u021bi semnificative a sistemului. Capacitatea sistemului de a-\u0219i \u00eendeplini func\u021biile \u00een timpul planificat, av\u00e2nd \u00een vedere timpul mediu de func\u021bionare sigur\u0103 \u0219i termenul de recuperare a func\u021bionalit\u0103\u021bii (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Disaster_recovery#Recovery_time_objective\">Obiectivul Timpului de Recuperare<\/a><\/noindex>) define\u0219te nivelul de fiabilitate al centrului de date. Exist\u0103 patru niveluri: TIER1, TIER2, TIER3, TIER4; cu c\u00e2t indicatorul este mai mare, cu at\u00e2t echipamentul centrului este mai fiabil \u0219i standardul \u00eentregii sale infrastructuri este mai ridicat. <\/p>\n<p>Cre\u0219terea performan\u021bei \u0219i capacit\u0103\u021bii. Dac\u0103 este necesar (\u00een perioade de v\u00e2rf) \u2014 posibilitatea de a extinde capacit\u0103\u021bile \u0219i de a \u00eembun\u0103t\u0103\u021bi eficien\u021ba centrului de date de rezerv\u0103, datorit\u0103 efectului de scalare: utilizarea maxim\u0103 a resurselor de calcul din \u00eentreaga sistem distribuit. Scalabilitatea ofer\u0103 capacit\u0103\u021bi de calcul flexibile la cerere prin configurarea dinamic\u0103.<\/p>\n<p>Rezilien\u021ba la dezastre. Aceasta este asigurat\u0103 prin rezervarea resurselor de calcul \u00eentr-o loca\u021bie la distan\u021b\u0103. Func\u021bionarea sistemului se realizeaz\u0103 printr-o configurare specific\u0103 a punctului de recuperare RPO \u0219i a timpului de recuperare RTO (nivelul de securitate \u0219i viteza de recuperare depind de tarif).<\/p>\n<p>Servicii distribuite. Resursele \u0219i serviciile IT ale companiei sunt separate de infrastructura de baz\u0103 \u0219i sunt furnizate \u00eentr-un mediu multi-utilizator la cerere \u0219i la scara necesar\u0103.<\/p>\n<p>Localizarea geografic\u0103 a serviciilor. Pentru a extinde publicul \u021bint\u0103 al brandului \u0219i a permite companiei s\u0103 p\u0103trund\u0103 pe noi pie\u021be geografice.<\/p>\n<p>Optimizarea costurilor. Crearea \u0219i men\u021binerea propriului centru de date este destul de <noindex><a rel=\"nofollow\" href=\"https:\/\/bijournal.hse.ru\/data\/2016\/08\/11\/1118257058\/%D0%9F%D0%B8%D1%80%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0%20%D0%93%D1%80%D0%B5%D0%BA%D1%83%D0%BB%20%D0%9F%D0%BE%D0%BA%D0%BB%D0%BE%D0%BD%D0%BE%D0%B2%20%D0%A0%D0%A3%D0%A1.pdf\">costisitoare<\/a><\/noindex> . Pentru majoritatea companiilor, \u00een special cele mari, distribuite pe teritorii \u0219i cele care planific\u0103 noi puncte de prezen\u021b\u0103 pe pia\u021b\u0103, externalizarea infrastructurii IT poate ajuta la economisirea semnificativ\u0103.<\/p>\n<h2>De ce este avantajos pentru afaceri s\u0103 aib\u0103 un centru de date \u201epe aproape\u201d<\/h2>\n<p>\nPentru multe servicii moderne \u0219i aplica\u021bii de afaceri, viteza de acces la loca\u021bie poate fi critic\u0103. Aceast\u0103 vitez\u0103 depinde, \u00een primul r\u00e2nd, de distan\u021ba dintre loca\u021biile sistemului de centre de date distribuite. Dac\u0103 distan\u021ba este mic\u0103, comunica\u021biile sunt simplificate \u0219i performan\u021ba este \u00eembun\u0103t\u0103\u021bit\u0103 datorit\u0103 reducerii laten\u021bei semnalului. Acest aspect este deosebit de important \u00een cazul rezerv\u0103rii. \u00centr-un cablu de fibr\u0103 optic\u0103, laten\u021ba de propagare a luminii este aproximativ egal\u0103 cu 5 ms\/km. Laten\u021ba afecteaz\u0103 timpul necesar pentru realizarea opera\u021biunilor de input-output, care este aproximativ 5-10 ms. <\/p>\n<p>Av\u00e2nd \u00een vedere c\u0103 serviciile trebuie s\u0103 func\u021bioneze constant, cu un grad \u00eenalt de disponibilitate \u0219i un timp minim de nefunc\u021bionare, este avantajos pentru afaceri s\u0103 \u00eenchirieze infrastructura IT geografic aproape de utilizatorii pie\u021belor \u021bint\u0103.<\/p>\n<p>Viteza de acces la platform\u0103 depinde \u0219i de echipamente. De exemplu, \u00een noul nostru centru de date din \u201eIT Park\u201d Kazan, po\u021bi ob\u021bine pentru serverul t\u0103u virtual un canal de internet de 100 Mbit\/s cu un acces maxim confortabil. <\/p>\n<p>Companiile cu o acoperire interna\u021bional\u0103 extins\u0103 ar trebui s\u0103 utilizeze platforme externe pentru stocarea datelor pentru a economisi costurile cu traficul \u0219i a reduce timpul de r\u0103spuns al paginilor web pentru utilizatorii din str\u0103in\u0103tate. Un timp de r\u0103spuns mare este cauza <noindex><a rel=\"nofollow\" href=\"https:\/\/webmasters.googleblog.com\/2010\/04\/using-site-speed-in-web-search-ranking.html\">sc\u0103zutului rank \u00een rezultatele c\u0103ut\u0103rii Google<\/a><\/noindex> \u0219i, ceea ce este mai important, motivul pentru care publicul \u021bint\u0103 p\u0103r\u0103se\u0219te site-urile tale (rata mare de respingere, care duce la pierderea de lead-uri).<\/p>\n<h2>Care sunt avantajele centrelor de date de rezerv\u0103<\/h2>\n<p>\nAv\u00e2nd \u00een vedere situa\u021bia adesea instabil\u0103 din Rusia \u00een domeniul securit\u0103\u021bii informa\u021biilor (de exemplu, recentul blocaj masiv al IP-urilor de c\u0103tre Roskomnadzor, care a afectat chiar \u0219i site-uri f\u0103r\u0103 leg\u0103tur\u0103 cu Telegram), este convenabil s\u0103 plasezi o parte din infrastructura IT a afacerii \u00een afara cadrului juridic rus. Presupun\u00e2nd c\u0103 \u00eenchiriezi servere \u00een un centru de date din Elve\u021bia, trebuie s\u0103 te conformezi legilor elve\u021biene privind protec\u021bia datelor, care sunt foarte stricte. Anume: nici structurile guvernamentale ale Elve\u021biei (cu excep\u021bia guvernului \u00een cazuri speciale), nici organele de aplicare a legii din alte \u021b\u0103ri nu au acces la nicio informa\u021bie de pe serverele \u201eelve\u021biene\u201d. F\u0103r\u0103 cuno\u0219tin\u021ba clientului, datele nu pot fi solicitate de la centrele de date \u0219i furnizorii.<\/p>\n<p>Dezvoltarea unui centru de date de rezerv\u0103 (sau de hosting) \u00eentr-o loca\u021bie \u00eendep\u0103rtat\u0103 (<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/319716\/\">extern\u0103<\/a><\/noindex>) este strategic justificate \u0219i, \u00een caz de necesitate, permite migrarea f\u0103r\u0103 probleme a serviciilor critice pentru afaceri pentru a asigura func\u021bionarea lor ne\u00eentrerupt\u0103. <\/p>\n<h2>Un pic mai multe despre centrul de date din Kazan<\/h2>\n<p>\nCum am men\u021bionat centrul de date din Kazan, ne permitem un mic bloc publicitar. \u201eIT Park\u201d, unde se afl\u0103 centrul de date, este cel mai mare parc tehnologic din domeniul tehnologiilor \u00eenalte din Tatarstan. Acesta este un centru de date cu o suprafa\u021b\u0103 de un kilometru p\u0103trat, nivel TIER3, cu o capacitate de 2,5 MW, av\u00e2nd posibilitatea de a g\u0103zdui peste 300 de rack-uri. <\/p>\n<p><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/b76774088aae0b37d391ae98448428ee.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nSecuritatea la nivel fizic este asigurat\u0103 prin dou\u0103 g\u0103rzi armate, camere video pe perimetru, un sistem de control al accesului cu pa\u0219apoarte la intrare, un sistem biometric de SCADA (amprentele digitale) \u00een sala de ma\u0219ini \u0219i chiar un cod de \u00eembr\u0103c\u0103minte pentru vizitatori (halate, boto\u0219i speciali cu automat pentru \u00eenc\u0103l\u021bare).<\/p>\n<p><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/1e0b833b2e0a4189c5153edd9a4db197.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nToate \u00eenc\u0103perile tehnice \u0219i s\u0103lile serverelor sunt echipate cu un sistem de stingere automat\u0103 a incendiilor pe baz\u0103 de gaz, dotat cu senzori de fum, care permite \u00eendep\u0103rtarea sursei de aprindere f\u0103r\u0103 a deteriora echipamentele de \u00eenalt\u0103 tehnologie. Sistemele de economisire a energiei, de r\u0103cire \u0219i de ventila\u021bie sunt implementate la cele mai \u00eenalte standarde, iar elementele cheie ale acestor sisteme sunt amplasate \u00een \u00eenc\u0103peri separate.<\/p>\n<p><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/e251af2dea854d30ea3a35a43d985e19.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nAm pus \u00een func\u021biune propria noastr\u0103 camer\u0103 de gaz \u00een centrul de date \u00abIT Park\u00bb. Data center-ul are un SLA de 99.982%, ceea ce \u00eenseamn\u0103 c\u0103 se conformeaz\u0103 complet cerin\u021belor interna\u021bionale ridicate privind stabilitatea opera\u021bional\u0103 a centrelor de date. De\u021bine licen\u021be de la FSTEC \u0219i FSB, precum \u0219i certificatul PCI-DSS, ceea ce permite g\u0103zduirea echipamentelor organiza\u021biilor care lucreaz\u0103 cu date personale (b\u0103nci \u0219i altele). \u0218i, ca \u00eentotdeauna, pre\u021burile pentru serverele virtuale de la furnizorul de hosting RUVDS \u00een acest centru de date nu se deosebesc de pre\u021burile din <noindex><a rel=\"nofollow\" href=\"https:\/\/ruvds.com\/ru-rub\">VPS<\/a><\/noindex> alte centre de date ale noastre din Moscova, Sankt Petersburg, Londra, Z\u00fcrich.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/ruvds.com\/ru-rub\/#order\"><img decoding=\"async\" alt=\"C\u00e2teva informa\u021bii despre centrele de date distribuite pentru afaceri\" src=\"\/wp-content\/uploads\/2019\/03\/554e372f226b88127db1c81aa977353f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/444544\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 \u0434\u043d\u044f\u0445 \u0418\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0443 \u00ab\u0438\u0441\u043f\u043e\u043b\u043d\u0438\u043b\u043e\u0441\u044c\u00bb 30 \u043b\u0435\u0442. \u0417\u0430 \u044d\u0442\u043e \u0432\u0440\u0435\u043c\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e-\u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0435 \u043f\u043e\u0442\u0440\u0435\u0431\u043d\u043e\u0441\u0442\u0438 \u0431\u0438\u0437\u043d\u0435\u0441\u0430 \u0440\u0430\u0437\u0440\u043e\u0441\u043b\u0438\u0441\u044c \u0434\u043e \u0442\u0430\u043a\u0438\u0445 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u043e\u0432, \u0447\u0442\u043e \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043c \u0443\u0436\u0435 \u043d\u0435 \u043e 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