{"id":31906,"date":"2019-10-31T21:43:53","date_gmt":"2019-10-31T18:43:53","guid":{"rendered":"https:\/\/prohoster.info\/blog\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing\/"},"modified":"2019-10-31T21:43:53","modified_gmt":"2019-10-31T18:43:53","slug":"sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing","title":{"rendered":"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A redundancia a t\u00e1rol\u00e1si rendszerekben mindig aktu\u00e1lis t\u00e9ma, mivel a mindennapi virtualiz\u00e1ci\u00f3 \u00e9s az er\u0151forr\u00e1sok konszolid\u00e1ci\u00f3ja kor\u00e1ban a t\u00e1rol\u00e1si rendszerek az a l\u00e1ncszem, amelynek meghib\u00e1sod\u00e1sa nem csup\u00e1n h\u00e9tk\u00f6znapi balesethez vezet, hanem hossz\u00fa t\u00e1v\u00fa le\u00e1ll\u00e1sokhoz is. \u00c9ppen ez\u00e9rt a modern t\u00e1rol\u00e1si rendszerek sz\u00e1mos, ak\u00e1r vez\u00e9rl\u0151kig terjed\u0151 dubl\u00e1lt komponenst tartalmaznak. De vajon elegend\u0151-e ez a v\u00e9delem?<\/p>\n<p>\n<img decoding=\"async\" alt=\"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.\" src=\"\/wp-content\/uploads\/2019\/04\/47fc590f7b0a1f8353f61bf8461ec9b8.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Minden egyes sz\u00e1ll\u00edt\u00f3, amikor a t\u00e1rol\u00e1si rendszerek jellemz\u0151it sorolja, mindenk\u00e9pp megeml\u00edti a megold\u00e1saik magas rendelkez\u00e9sre \u00e1ll\u00e1s\u00e1t, sz\u00f3ba ker\u00fclve a \u201enincs egyetlen hiba pont\u201d kifejez\u00e9s is. N\u00e9zz\u00fck meg alaposabban egy tipikus t\u00e1rol\u00e1si rendszert. A le\u00e1ll\u00e1sok elker\u00fcl\u00e9se \u00e9rdek\u00e9ben a t\u00e1rol\u00e1si rendszerekben megdupl\u00e1zz\u00e1k a t\u00e1pegys\u00e9geket, a h\u0171t\u0151modulokat, a bemeneti\/kimeneti portokat, a t\u00e1rol\u00f3kat (teh\u00e1t RAID-re gondolunk) \u00e9s term\u00e9szetesen a vez\u00e9rl\u0151ket. Ha alaposabban megn\u00e9zz\u00fck ezt az architekt\u00far\u00e1t, legal\u00e1bb k\u00e9t potenci\u00e1lis hiba pontot fedezhet\u00fcnk fel, amelyekr\u0151l szer\u00e9nyen hallgatnak:<\/p>\n<p><\/p>\n<ol>\n<li>Egyetlen b\u0171v\u00f6s h\u00e1tlap (backplane) megl\u00e9te<\/li>\n<li>Egy adatok egy p\u00e9ld\u00e1ny\u00e1nak megl\u00e9te<\/li>\n<\/ol>\n<p><\/p>\n<p>A h\u00e1tlap egy technikailag bonyolult eszk\u00f6z, amelyet gy\u00e1rt\u00e1s k\u00f6zben alapos tesztel\u00e9snek vetnek al\u00e1. \u00c9ppen ez\u00e9rt rendk\u00edv\u00fcl ritka eset, amikor teljesen le\u00e1ll. Azonban m\u00e9g r\u00e9szleges probl\u00e9m\u00e1k, mint p\u00e9ld\u00e1ul egy nem m\u0171k\u00f6d\u0151 t\u00e1rol\u00f3hely, eset\u00e9n is sz\u00fcks\u00e9g van a cser\u00e9re a t\u00e1rol\u00e1si rendszer teljes le\u00e1ll\u00edt\u00e1s\u00e1val.<\/p>\n<p><\/p>\n<p>T\u00f6bb adatp\u00e9ld\u00e1ny l\u00e9trehoz\u00e1sa els\u0151 r\u00e1n\u00e9z\u00e9sre szint\u00e9n nem t\u0171nik probl\u00e9m\u00e1nak. P\u00e9ld\u00e1ul a t\u00e1rol\u00e1si rendszeren bel\u00fcli Clone funkci\u00f3, amely lehet\u0151v\u00e9 teszi az adatok teljes p\u00e9ld\u00e1ny\u00e1nak id\u0151szakos aktualiz\u00e1l\u00e1s\u00e1t, meglehet\u0151sen sz\u00e9les k\u00f6rben elterjedt. Azonban ha a h\u00e1tlappal probl\u00e9m\u00e1k l\u00e9pnek fel, a m\u00e1solat ugyanolyan megk\u00f6zel\u00edthetetlen lesz, mint az eredeti. <\/p>\n<p><\/p>\n<p>Egy\u00e9rtelm\u0171 megold\u00e1s a fenti probl\u00e9m\u00e1k \u00e1thidal\u00e1s\u00e1ra a m\u00e1sik adatt\u00e1rol\u00f3ra t\u00f6rt\u00e9n\u0151 replik\u00e1ci\u00f3. Ha figyelmen k\u00edv\u00fcl hagyjuk a \"hardware\" k\u00f6lts\u00e9gek v\u00e1rhat\u00f3 megdupl\u00e1z\u00f3d\u00e1s\u00e1t (hiszen felt\u00e9telezz\u00fck, hogy az ilyen d\u00f6nt\u00e9st hoz\u00f3 emberek tudatosan gondolkodnak \u00e9s el\u0151re felk\u00e9sz\u00fclnek erre a t\u00e9nyre), akkor m\u00e9g lehets\u00e9ges kiad\u00e1sok maradnak a replik\u00e1ci\u00f3 megszervez\u00e9s\u00e9re, mint p\u00e9ld\u00e1ul licenszek, plusz szoftver- \u00e9s hardvereszk\u00f6z\u00f6k. \u00c9s legf\u0151k\u00e9ppen, valamilyen m\u00f3don biztos\u00edtani kell az replik\u00e1ci\u00f3ra sz\u00e1nt adatok konzisztenci\u00e1j\u00e1t. Vagyis virtualiz\u00e1torokat kell \u00e9p\u00edteni, mint p\u00e9ld\u00e1ul SCSI\/vSAN\/stb., ami szint\u00e9n p\u00e9nz\u00fcgyi \u00e9s id\u0151beli forr\u00e1st ig\u00e9nyel.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/\">AccelStor <\/a><\/noindex>A saj\u00e1t High Availability rendszereik l\u00e9trehoz\u00e1sakor c\u00e9lul t\u0171zt\u00e9k ki a fent eml\u00edtett h\u00e1tr\u00e1nyok kik\u00fcsz\u00f6b\u00f6l\u00e9s\u00e9t. \u00cdgy sz\u00fcletett meg a Shared Nothing technol\u00f3gia \u00e9rtelmez\u00e9se, ami szabad ford\u00edt\u00e1sban annyit jelent, hogy \"nincs k\u00f6z\u00f6s eszk\u00f6z haszn\u00e1lata\".<\/p>\n<p><\/p>\n<p>Koncepci\u00f3 <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/modeli-vysokoj-dostupnosti-ha\">Shared Nothing<\/a><\/noindex> Architekt\u00far\u00e1ja k\u00e9t f\u00fcggetlen node (kontroller) haszn\u00e1lat\u00e1t jelenti, mindegyik a saj\u00e1t adathalmaz\u00e1val. A node-ok k\u00f6z\u00f6tti szinkroniz\u00e1lt replik\u00e1ci\u00f3 InfiniBand 56G interf\u00e9szen kereszt\u00fcl t\u00f6rt\u00e9nik, teljes \u00e1tl\u00e1that\u00f3s\u00e1ggal a t\u00e1rol\u00f3rendszeren fut\u00f3 szoftver sz\u00e1m\u00e1ra. Ennek eredm\u00e9nyek\u00e9nt nem sz\u00fcks\u00e9ges virtualiz\u00e1torok, szoftveres \u00fcgyn\u00f6k\u00f6k \u00e9s egy\u00e9b hasonl\u00f3k alkalmaz\u00e1sa.<\/p>\n<p><\/p>\n<p>A fizikai k\u00e9tnode-os megold\u00e1s az AccelStor-t\u00f3l k\u00e9t modellben \u00e9rhet\u0151 el:<\/p>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-h510\">H510<\/a><\/noindex> \u2014 Twin szerverek alapj\u00e1n, 2U h\u00e1zban, ha m\u00e9rs\u00e9kelt teljes\u00edtm\u00e9nyre \u00e9s ak\u00e1r 22 TB kapacit\u00e1sra van sz\u00fcks\u00e9g;<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-h710\">H710<\/a><\/noindex> \u2014 k\u00fcl\u00f6n\u00e1ll\u00f3 2U szerverek alapj\u00e1n, ha magas teljes\u00edtm\u00e9ny \u00e9s nagyobb kapacit\u00e1s (ak\u00e1r 57 TB) sz\u00fcks\u00e9ges.<\/li>\n<\/ul>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.\" src=\"\/wp-content\/uploads\/2019\/04\/58d7600872e0ffcb5c87795c80de2c32.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>H510 modell Twin szerver alap\u00fa<\/i><\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.\" src=\"\/wp-content\/uploads\/2019\/04\/0c6aae3bbca60536aaeb1cd92dd86ce8.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>H710 modell k\u00fcl\u00f6n\u00e1ll\u00f3 szerverek alap\u00fa<\/i><\/p>\n<p><\/p>\n<p>A k\u00fcl\u00f6nb\u00f6z\u0151 form\u00e1tumok haszn\u00e1lata a sz\u00fcks\u00e9ges SSD-k sz\u00e1m\u00e1ban rejlik, hogy el\u00e9rj\u00e9k a k\u00edv\u00e1nt kapacit\u00e1st \u00e9s teljes\u00edtm\u00e9nyt. R\u00e1ad\u00e1sul a Twin platform olcs\u00f3bb, \u00e9s lehet\u0151v\u00e9 teszi az el\u00e9rhet\u0151bb \u00e1ron k\u00edn\u00e1lt megold\u00e1sokat, m\u00e9g ha van egy felt\u00e9teles \"h\u00e1tr\u00e1nya\" az egys\u00e9ges backplane form\u00e1j\u00e1ban is. Minden m\u00e1s, bele\u00e9rtve a m\u0171k\u00f6d\u00e9si elveket, teljesen azonos mindk\u00e9t modell eset\u00e9ben.<\/p>\n<p><\/p>\n<p>Minden node adathalmaz\u00e1nak k\u00e9t csoportja van <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap<\/a><\/noindex>, plusz 2 hot spare. Minden csoport k\u00e9pes elviselni egy SSD meghib\u00e1sod\u00e1s\u00e1t. Az \u00f6sszes be\u00e9rkez\u0151 \u00edr\u00e1si k\u00e9relem a node-on a <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-advantages\">ideol\u00f3gia szerint<\/a><\/noindex> A FlexiRemap sorozatos l\u00e1ncokk\u00e1 alak\u00edtja a 4KByte-os blokkokat, amelyeket ezut\u00e1n az SSD-re a lehet\u0151 legk\u00e9nyelmesebb m\u00f3don (sorozatos \u00edr\u00e1s) \u00edrnak. A rendszer csak az adatok SSD-re t\u00f6rt\u00e9n\u0151 t\u00e9nyleges elhelyez\u00e9se ut\u00e1n adja meg az \u00edr\u00e1si meger\u0151s\u00edt\u00e9st, azaz RAM-ban t\u00f6rt\u00e9n\u0151 gyors\u00edt\u00f3t\u00e1raz\u00e1s n\u00e9lk\u00fcl. Ennek eredm\u00e9nyek\u00e9nt leny\u0171g\u00f6z\u0151 teljes\u00edtm\u00e9ny \u00e9rhet\u0151 el, ak\u00e1r 600K IOPS \u00edr\u00e1sra \u00e9s 1M+ IOPS olvas\u00e1sra (H710 modell).<\/p>\n<p><\/p>\n<p>Ahogy m\u00e1r eml\u00edtett\u00fck, az adathalmazok szinkroniz\u00e1l\u00e1sa val\u00f3s id\u0151ben t\u00f6rt\u00e9nik a magasan teljes\u00edtm\u00e9ny\u0171 \u00e9s alacsony k\u00e9sleltet\u00e9s\u0171 56G InfiniBand interf\u00e9szen kereszt\u00fcl. Az optim\u00e1lis s\u00e1vsz\u00e9less\u00e9g kihaszn\u00e1l\u00e1sa \u00e9rdek\u00e9ben a kis csomagok \u00e1tvitele sor\u00e1n. Mivel egyetlen \u00e1tviteli csatorna van, a pulzus kieg\u00e9sz\u00edt\u0151 ellen\u0151rz\u00e9s\u00e9hez egy dedik\u00e1lt 1GbE linket haszn\u00e1lnak. Ezen kereszt\u00fcl csak a heartbeat inform\u00e1ci\u00f3 ker\u00fcl \u00e1tvitelre, ez\u00e9rt nem t\u00e1masztanak elv\u00e1r\u00e1sokat a sebess\u00e9ggel kapcsolatban.<\/p>\n<p><\/p>\n<p>A rendszer kapacit\u00e1s\u00e1nak n\u00f6vel\u00e9se (400+ TB-ig) eset\u00e9n <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/moduli-rasshireniya\">b\u0151v\u00edt\u0151polcok<\/a><\/noindex> ezeket p\u00e1rban csatlakoztatj\u00e1k a \"nincs egyetlen hibapont\" koncepci\u00f3 betart\u00e1sa \u00e9rdek\u00e9ben.<\/p>\n<p><\/p>\n<p>Az adatok tov\u00e1bbi v\u00e9delme \u00e9rdek\u00e9ben (tov\u00e1bb\u00e1, hogy az AccelStor-nak m\u00e1r k\u00e9t m\u00e1solata van) speci\u00e1lis algoritmus alkalmazand\u00f3, amennyiben b\u00e1rmelyik SSD meghib\u00e1sodik. Ha egy SSD meghib\u00e1sodik, a csom\u00f3pont adatokat kezd el \u00fajj\u00e1\u00e9p\u00edteni egy hot spare meghajt\u00f3ra. A FlexiRemap csoport, amely k\u00e1rosodott \u00e1llapotban van, csak olvas\u00e1si m\u00f3dba l\u00e9p. Ezt az\u00e9rt teszik, hogy kiz\u00e1rj\u00e1k a fel\u00edr\u00e1si m\u0171veletek \u00e9s az \u00fajj\u00e1\u00e9p\u00edt\u00e9s interferenci\u00e1j\u00e1t a tartal\u00e9k lemezen, ami v\u00e9gs\u0151 soron felgyors\u00edtja a helyre\u00e1ll\u00edt\u00e1si folyamatot \u00e9s cs\u00f6kkenti azt az id\u0151t, amikor a rendszer potenci\u00e1lisan sebezhet\u0151. Az \u00fajj\u00e1\u00e9p\u00edt\u00e9s befejez\u00e9se ut\u00e1n a csom\u00f3pont ism\u00e9t norm\u00e1l olvas\u00e1s-\u00edr\u00e1s m\u0171k\u00f6d\u00e9sbe l\u00e9p. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.\" src=\"\/wp-content\/uploads\/2019\/04\/8e0d67ff4d803f575e007df424b8ba14.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Term\u00e9szetesen, ahogyan m\u00e1s rendszerek eset\u00e9ben, az \u00fajj\u00e1\u00e9p\u00edt\u00e9s alatt cs\u00f6kken az \u00f6sszteljes\u00edtm\u00e9ny (hiszen az egyik FlexiRemap csoport nem haszn\u00e1lhat\u00f3 \u00edr\u00e1sra). De a helyre\u00e1ll\u00edt\u00e1s folyamata a lehet\u0151 leggyorsabban zajlik, ami jelent\u0151s el\u0151nyt biztos\u00edt az AccelStor rendszereinek m\u00e1s besz\u00e1ll\u00edt\u00f3k megold\u00e1saival szemben.<\/p>\n<p><\/p>\n<p>A Nothing Shared technol\u00f3gia m\u00e1sik hasznos tulajdons\u00e1ga a csom\u00f3pontok m\u0171k\u00f6d\u00e9se a \u00fagynevezett true active-active \u00fczemm\u00f3dban. Elt\u00e9r\u0151en a \"klasszikus\" architekt\u00far\u00e1t\u00f3l, ahol egy adott k\u00f6tet\/pool csak egy vez\u00e9rl\u0151h\u00f6z tartozik, m\u00edg a m\u00e1sodik csup\u00e1n I\/O m\u0171veleteket v\u00e9gez, a rendszerek <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/\">AccelStor<\/a><\/noindex> Minden egyes node saj\u00e1t adathalmazon dolgozik, \u00e9s nem tov\u00e1bb\u00edtja a k\u00e9r\u00e9seket a \"szomsz\u00e9d\" node-hoz. Ennek eredm\u00e9nyek\u00e9nt a rendszer \u00f6sszteljes\u00edtm\u00e9nye n\u0151, mivel a node-ok p\u00e1rhuzamosan kezelik a bemeneti\/kimeneti k\u00e9r\u00e9seket \u00e9s hozz\u00e1f\u00e9rnek a t\u00e1rol\u00f3khoz. Emellett gyakorlatilag nincs olyan dolog, mint a failover, mivel a vez\u00e9rl\u00e9st egy m\u00e1sik node-ra \u00e1tkapcsolni hiba eset\u00e9n egyszer\u0171en nincs sz\u00fcks\u00e9g.<\/p>\n<p><\/p>\n<p>Ha a Nothing Shared architekt\u00fara technol\u00f3gi\u00e1j\u00e1t a teljes k\u00f6r\u0171 t\u00e1rol\u00f3dublik\u00e1ci\u00f3val hasonl\u00edtjuk \u00f6ssze, akkor els\u0151 pillant\u00e1sra egy kicsit h\u00e1tr\u00e1nyban van a katasztr\u00f3fa-helyre\u00e1ll\u00edt\u00e1s rugalmas megval\u00f3s\u00edthat\u00f3s\u00e1g\u00e1ban. K\u00fcl\u00f6n\u00f6sen a t\u00e1rol\u00f3rendszerek k\u00f6z\u00f6tti kommunik\u00e1ci\u00f3s vonal megszervez\u00e9s\u00e9re vonatkozik ez. \u00cdgy a H710 modell eset\u00e9ben a node-ok ak\u00e1r 100 m\u00e9teres t\u00e1vols\u00e1gra is elhelyezhet\u0151k a nem \u00e9ppen olcs\u00f3 akt\u00edv optikai InfiniBand k\u00e1belek haszn\u00e1lat\u00e1val. De m\u00e9g ha m\u00e1s gy\u00e1rt\u00f3k szinkron replik\u00e1ci\u00f3j\u00e1t hasonl\u00edtjuk \u00f6ssze, amelyek el\u00e9rhet\u0151 Fibre Channel-t haszn\u00e1lnak m\u00e9g nagyobb t\u00e1vols\u00e1gokra is, az AccelStor megold\u00e1sa olcs\u00f3bb \u00e9s egyszer\u0171bb az telep\u00edt\u00e9sben\/\u00fczemeltet\u00e9sben, mivel nincs sz\u00fcks\u00e9g t\u00e1rol\u00f3 virtualiz\u00e1torok telep\u00edt\u00e9s\u00e9re \u00e9s\/vagy szoftverintegr\u00e1ci\u00f3ra (ami nem mindig lehets\u00e9ges). Plusz, ne feledj\u00fck, hogy az AccelStor megold\u00e1sok \u2013 All Flash t\u00f6mb\u00f6k, amelyek teljes\u00edtm\u00e9nye meghaladja a klasszikus SSD-only t\u00e1rol\u00f3k\u00e9t.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"A Shared Nothing architekt\u00fara cs\u00f6kkenti a le\u00e1ll\u00e1s kock\u00e1zat\u00e1t.\" src=\"\/wp-content\/uploads\/2019\/04\/46d39a96eedcd20e5ddcac2dc1301411.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<blockquote><p>A Nothing Shared technol\u00f3gia alkalmaz\u00e1s\u00e1val az AccelStor t\u00e1rol\u00f3 architekt\u00far\u00e1j\u00e1n\u00e1l t\u00e9nylegesen el\u00e9rhet\u0151 a t\u00e1rol\u00f3rendszer 99.9999%-os el\u00e9rhet\u0151s\u00e9ge, eg\u00e9szen \u00e9sszer\u0171 \u00e1ron. Az \u00fctemez\u0151 algoritmusoknak k\u00f6sz\u00f6nhet\u0151en a megold\u00e1s magas megb\u00edzhat\u00f3s\u00e1g\u00e1val, bele\u00e9rtve a k\u00e9t adatok m\u00e1solat\u00e1nak haszn\u00e1lat\u00e1t, \u00e9s leny\u0171g\u00f6z\u0151 teljes\u00edtm\u00e9ny\u00e9vel egy\u00fctt. <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap<\/a><\/noindex>, az <noindex><a rel=\"nofollow\" href=\"https:\/\/www.accelstor.com\/\">AccelStor<\/a><\/noindex> kiv\u00e1l\u00f3 jel\u00f6ltek a modern adatk\u00f6zpontok kulcsfontoss\u00e1g\u00fa poz\u00edci\u00f3inak kialak\u00edt\u00e1s\u00e1hoz.<\/p><\/blockquote>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/accelstor\/blog\/441780\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0422\u0435\u043c\u0430 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0441\u0435\u0433\u0434\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432 \u043d\u0430\u0448 \u0432\u0435\u043a \u043f\u043e\u0432\u0441\u0435\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043a\u043e\u043d\u0441\u043e\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0421\u0425\u0414 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0435\u043c \u0437\u0432\u0435\u043d\u043e\u043c, \u043e\u0442\u043a\u0430\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u0442 \u043d\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u043a \u0437\u0430\u0443\u0440\u044f\u0434\u043d\u043e\u0439 \u0430\u0432\u0430\u0440\u0438\u0438, \u0430 \u043a \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u043f\u0440\u043e\u0441\u0442\u043e\u044f\u043c \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u0421\u0425\u0414 \u0438\u043c\u0435\u044e\u0442 \u0432 \u0441\u0432\u043e\u0435\u043c \u0441\u043e\u0441\u0442\u0430\u0432\u0435 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u0434\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 (\u0432\u043f\u043b\u043e\u0442\u044c \u0434\u043e \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432). \u041d\u043e \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u0430 \u043b\u0438 \u0442\u0430\u043a\u0430\u044f \u0437\u0430\u0449\u0438\u0442\u0430? \u0410\u0431\u0441\u043e\u043b\u044e\u0442\u043d\u043e \u0432\u0441\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23766,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-31906","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=\"\u0422\u0435\u043c\u0430 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0441\u0435\u0433\u0434\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432 \u043d\u0430\u0448 \u0432\u0435\u043a \u043f\u043e\u0432\u0441\u0435\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043a\u043e\u043d\u0441\u043e\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0421\u0425\u0414 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0435\u043c \u0437\u0432\u0435\u043d\u043e\u043c, \u043e\u0442\u043a\u0430\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u0442 \u043d\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u043a.\" \/>\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\/hu\/blog\/administrirovanie\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"hu_HU\" \/>\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\u0421\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0440\u0438\u0441\u043a\u043e\u0432 downtime \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 Shared Nothing | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0422\u0435\u043c\u0430 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0441\u0435\u0433\u0434\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432 \u043d\u0430\u0448 \u0432\u0435\u043a \u043f\u043e\u0432\u0441\u0435\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043a\u043e\u043d\u0441\u043e\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0421\u0425\u0414 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0435\u043c \u0437\u0432\u0435\u043d\u043e\u043c, \u043e\u0442\u043a\u0430\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u0442 \u043d\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u043a.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T18:43:53+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T18:43:53+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47A le\u00e1ll\u00e1sok kock\u00e1zat\u00e1nak cs\u00f6kkent\u00e9se a Shared Nothing architekt\u00far\u00e1val | ProHoster","description":"Az adatv\u00e9delmi rendszerek megb\u00edzhat\u00f3s\u00e1ga mindig aktu\u00e1lis t\u00e9ma, mivel a virtualiz\u00e1ci\u00f3 \u00e9s az er\u0151forr\u00e1sok konszolid\u00e1l\u00e1s\u00e1nak kor\u00e1ban a t\u00e1rol\u00f3 rendszer az a l\u00e1ncszem, amelynek meghib\u00e1sod\u00e1sa nemcsak hogy.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"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","og:type":"article","og:title":"\ud83e\udd47\u0421\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0440\u0438\u0441\u043a\u043e\u0432 downtime \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 Shared Nothing | ProHoster","og:description":"\u0422\u0435\u043c\u0430 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0441\u0435\u0433\u0434\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432 \u043d\u0430\u0448 \u0432\u0435\u043a \u043f\u043e\u0432\u0441\u0435\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043a\u043e\u043d\u0441\u043e\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0421\u0425\u0414 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0435\u043c \u0437\u0432\u0435\u043d\u043e\u043c, \u043e\u0442\u043a\u0430\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u0442 \u043d\u0435 \u043f\u0440\u043e\u0441\u0442\u043e \u043a.","og:url":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/sokrashhenie-riskov-downtime-blagodarya-arhitekture-shared-nothing","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:43:53+00:00","article:modified_time":"2019-10-31T18:43:53+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"31906","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 08:22:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 03:09:25","updated":"2026-01-21 08:22:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/31906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=31906"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/31906\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media\/23766"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=31906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=31906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=31906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}