{"id":79691,"date":"2020-04-29T19:42:18","date_gmt":"2020-04-29T17:42:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/pochemu-oceanstor-dorado-v6-samaya-bystraya-i-nadyozhnaya-shd"},"modified":"2020-04-29T19:42:18","modified_gmt":"2020-04-29T17:42:18","slug":"pochemu-oceanstor-dorado-v6-samaya-bystraya-i-nadyozhnaya-shd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/pochemu-oceanstor-dorado-v6-samaya-bystraya-i-nadyozhnaya-shd","title":{"rendered":"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Pros\u00edm, nesp\u011bchejte s z\u00e1v\u011bry na z\u00e1klad\u011b nadpisu! M\u00e1me v\u00e1\u017en\u00e9 argumenty na jeho podporu a zabalili jsme je do co nejkompaktn\u011bj\u0161\u00ed formy. P\u0159edstavujeme v\u00e1m p\u0159\u00edsp\u011bvek o konceptu a principech na\u0161\u00ed nov\u00e9 datab\u00e1zov\u00e9 storage syst\u00e9mu, jeho\u017e uveden\u00ed na trh prob\u011bhlo v lednu 2020.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/36c949c0c7099441a62597353bd084a6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Podle na\u0161eho p\u0159esv\u011bd\u010den\u00ed, hlavn\u00ed konkuren\u010dn\u00ed v\u00fdhoda rodiny storage syst\u00e9m\u016f Dorado V6 spo\u010d\u00edv\u00e1 pr\u00e1v\u011b ve zm\u00edn\u011bn\u00e9 v\u00fdkonnosti a spolehlivosti. Ano, je to tak jednoduch\u00e9, ale jak jsme toho \"jednoduch\u00e9ho\" dos\u00e1hli pomoc\u00ed r\u016fzn\u00fdch, n\u011bkdy i trochu rafinovan\u00fdch \u0159e\u0161en\u00ed, o tom si dnes budeme pov\u00eddat.<\/p>\n<p>Abychom l\u00e9pe odhalili potenci\u00e1l syst\u00e9m\u016f nov\u00e9 generace, pov\u00edme si o vy\u0161\u0161\u00edch modelech z portfolia (modely 8000, 18000). Pokud nen\u00ed uvedeno jinak, m\u00e1me na mysli pr\u00e1v\u011b je.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/d72f9e38b1c95ae248f4afa77fc15a8c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>P\u00e1r slov o trhu<\/h2>\n<p>\nAbychom l\u00e9pe pochopili m\u00edsto \u0159e\u0161en\u00ed Huawei na trhu, obr\u00e1t\u00edme se na osv\u011bd\u010den\u00fd m\u011b\u0159\u00edtko \u2013 \u201e<noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Gartner#%D0%9C%D0%B0%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9_%D0%BA%D0%B2%D0%B0%D0%B4%D1%80%D0%B0%D0%BD%D1%82\">magick\u00e9 kvadranty<\/a><\/noindex>Gartner. P\u0159ed dv\u011bma lety byla na\u0161e spole\u010dnost pevn\u011b v skupin\u011b l\u00eddr\u016f v sektoru diskov\u00fdch pol\u00ed pro v\u0161eobecn\u00e9 pou\u017eit\u00ed, za NetApp a Hewlett Packard Enterprise. Postaven\u00ed Huawei na trhu pevnostn\u00edch storage syst\u00e9m\u016f v roce 2018 bylo charakterizov\u00e1no statusem \u201euchaze\u010d\u201c, ale pro dosa\u017een\u00ed vedouc\u00edch pozic n\u00e1m n\u011bco chyb\u011blo.<\/p>\n<p>V roce 2019 spojil Gartner ve sv\u00e9m v\u00fdzkumu oba v\u00fd\u0161e uveden\u00e9 sektory do jednoho \u2013 \u201eHlavn\u00ed storage\u201c. V\u00fdsledkem bylo, \u017ee se Huawei op\u011bt ocitl v kvadrantu l\u00eddr\u016f, vedle dodavatel\u016f jako jsou IBM, Hitachi Vantara a Infinidat.<\/p>\n<p>Pro \u00faplnost obrazu je t\u0159eba poznamenat, \u017ee 80 % dat pro anal\u00fdzu Gartner shroma\u017e\u010fuje na americk\u00e9m trhu, co\u017e vede k v\u00fdrazn\u00e9mu zkreslen\u00ed ve prosp\u011bch t\u011bch spole\u010dnost\u00ed, kter\u00e9 jsou v USA dob\u0159e zastoupeny. Mezit\u00edm dodavatel\u00e9, kte\u0159\u00ed se zam\u011b\u0159uj\u00ed na evropsk\u00e9 a asijsk\u00e9 trhy, se ocitaj\u00ed v nev\u00fdhodn\u00e9 pozici. A i p\u0159esto, v lo\u0148sk\u00e9m roce dos\u00e1hl v\u00fdrobek Huawei d\u016fstojn\u00e9ho m\u00edsta v prav\u00e9m horn\u00edm kvadrantu a podle \u00fasudku Gartneru \u201em\u016f\u017ee b\u00fdt doporu\u010den k pou\u017eit\u00ed\u201c.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/32e0d32a60b4e88cc7cdc8dafa1ed9d5.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Co nov\u00e9ho v Dorado V6<\/h2>\n<p>\nProduktov\u00e1 \u0159ada Dorado V6, zejm\u00e9na modely ze s\u00e9rie 3000, je ur\u010dena pro z\u00e1kladn\u00ed \u00farove\u0148 syst\u00e9m\u016f. P\u016fvodn\u011b vybaven\u00e9 dv\u011bma \u0159adi\u010di, mohou b\u00fdt horizont\u00e1ln\u011b roz\u0161\u00ed\u0159eny a\u017e na 16 \u0159adi\u010d\u016f, 1200 disk\u016f a 192 GB cache. Syst\u00e9m bude tak\u00e9 vybaven extern\u00edmi porty Fibre Channel (8 \/ 16 \/ 32 Gb\/s) a Ethernet (1 \/ 10 \/ 25 \/ 40 \/ 100 Gb\/s).<\/p>\n<p>Je t\u0159eba poznamenat, \u017ee se v sou\u010dasnosti ukon\u010duje pou\u017e\u00edv\u00e1n\u00ed protokol\u016f, kter\u00e9 nemaj\u00ed komer\u010dn\u00ed \u00fasp\u011bch, proto jsme se na za\u010d\u00e1tku rozhodli od\u0159\u00edct podporu Fibre Channel over Ethernet (FCoE) a Infiniband (IB). Tyto protokoly budou p\u0159id\u00e1ny v pozd\u011bj\u0161\u00edch verz\u00edch firmwaru. Podpora NVMe over Fabric (NVMe-oF) je k dispozici p\u0159\u00edmo \u201ez krabice\u201c p\u0159es Fibre Channel. V p\u0159\u00ed\u0161t\u00edm firmwaru, jeho\u017e vyd\u00e1n\u00ed je napl\u00e1nov\u00e1no na \u010derven, bude p\u0159id\u00e1na podpora re\u017eimu NVMe over Ethernet. Na na\u0161em n\u00e1zoru, uveden\u00e1 sada pln\u011b pokryje pot\u0159eby v\u011bt\u0161iny z\u00e1kazn\u00edk\u016f Huawei.<\/p>\n<p>Sou\u010dasn\u00e1 verze firmwaru neobsahuje souborov\u00fd p\u0159\u00edstup, kter\u00fd se objev\u00ed v jednom z n\u00e1sleduj\u00edc\u00edch aktualizac\u00ed na konci roku. Realizace je pl\u00e1nov\u00e1na na nativn\u00ed \u00farovni, p\u0159\u00edmo \u0159adi\u010di s Ethernet porty, bez pou\u017eit\u00ed dodate\u010dn\u00e9ho hardwaru.<\/p>\n<p>Hlavn\u00edm rozd\u00edlem modelu Dorado V6 s\u00e9rie 3000 od star\u0161\u00edch model\u016f je, \u017ee na backendu podporuje pouze jeden protokol \u2014 SAS 3.0. Odpov\u00eddaj\u00edc\u00edm zp\u016fsobem mohou b\u00fdt pou\u017eity pouze disky s t\u00edmto rozhran\u00edm. Z na\u0161eho pohledu je poskytovan\u00e1 v\u00fdkonnost pro za\u0159\u00edzen\u00ed tohoto typu zcela dostate\u010dn\u00e1.<\/p>\n<p>Syst\u00e9my Dorado s\u00e9rie V6 5000 a 6000 pat\u0159\u00ed do st\u0159edn\u00ed t\u0159\u00eddy \u0159e\u0161en\u00ed. Tak\u00e9 jsou vyrobeny ve form\u00e1tu 2U a vybaveny dv\u011bma \u0159adi\u010di. Rozli\u0161uj\u00ed se v\u00fdkonem, po\u010dtem procesor\u016f, maxim\u00e1ln\u00edm po\u010dtem disk\u016f a objemem cache. Nicm\u00e9n\u011b, z architektonick\u00e9ho a in\u017een\u00fdrsk\u00e9ho hlediska jsou Dorado V6 5000 a 6000 identick\u00e9 a vypadaj\u00ed stejn\u011b.<\/p>\n<p>Do kategorie hi-end pat\u0159\u00ed syst\u00e9my Dorado V6 s\u00e9rie 8000 a 18000. Vyroben\u00e9 ve form\u00e1tu 4U, maj\u00ed odli\u0161nou architekturu, kde jsou \u0159adi\u010de a disky odd\u011bleny. V minim\u00e1ln\u00ed konfiguraci mohou m\u00edt tak\u00e9 pouze dva \u0159adi\u010de, i kdy\u017e z\u00e1kazn\u00edci obvykle \u017e\u00e1daj\u00ed o instalaci \u010dty\u0159 a v\u00edce.<\/p>\n<p>Dorado V6 8000 je horizont\u00e1ln\u011b \u0161k\u00e1lovateln\u00fd a\u017e do 16 \u0159adi\u010d\u016f, zat\u00edmco Dorado V6 18000 a\u017e do 32. Tyto syst\u00e9my vyu\u017e\u00edvaj\u00ed r\u016fzn\u00e9 procesory s r\u016fzn\u00fdm po\u010dtem jader a velikost\u00ed cache. P\u0159esto z\u016fst\u00e1v\u00e1 identita in\u017een\u00fdrsk\u00fdch \u0159e\u0161en\u00ed zachov\u00e1na, stejn\u011b jako u model\u016f st\u0159edn\u00ed t\u0159\u00eddy.<\/p>\n<p>2U police s \u00falo\u017ei\u0161ti se p\u0159ipojuj\u00ed prost\u0159ednictv\u00edm RDMA s propustnost\u00ed 100 Gbit\/s. Backend Dorado V6 vy\u0161\u0161\u00edch s\u00e9ri\u00ed tak\u00e9 podporuje SAS 3.0, ale sp\u00ed\u0161e pro p\u0159\u00edpad, \u017ee ceny SSD s t\u00edmto rozhran\u00edm v\u00fdrazn\u011b poklesnou. V takov\u00e9m p\u0159\u00edpad\u011b by jejich vyu\u017eit\u00ed m\u011blo ekonomick\u00fd smysl i s ohledem na ni\u017e\u0161\u00ed v\u00fdkon. V sou\u010dasn\u00e9 dob\u011b je v\u0161ak rozd\u00edl v cen\u011b mezi SSD s rozhran\u00edmi SAS a NVMe tak mal\u00fd, \u017ee podobn\u00e9 \u0159e\u0161en\u00ed nem\u016f\u017eeme doporu\u010dit.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/6006293a9dffae22770b02c616f0824e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Uvnit\u0159 \u0159adi\u010de<\/h2>\n<p>\n\u0158adi\u010de Dorado V6 jsou vyrobeny na na\u0161\u00ed vlastn\u00ed prvek. \u017d\u00e1dn\u00e9 procesory od Intelu, \u017e\u00e1dn\u00e9 ASIC od Broadcom. T\u00edmto zp\u016fsobem jsou v\u0161echny komponenty z\u00e1kladn\u00ed desky, stejn\u011b jako ona sama, zcela vyvedeny z vlivu rizik spojen\u00fdch se sank\u010dn\u00edm tlakem ze strany americk\u00fdch spole\u010dnost\u00ed. Ti, kte\u0159\u00ed vid\u011bli jak\u00e9koli na\u0161e za\u0159\u00edzen\u00ed, si jist\u011b v\u0161imli \u0161t\u00edtk\u016f s \u010derven\u00fdm pruhem pod logem. Ten znamen\u00e1, \u017ee v\u00fdrobek neobsahuje americk\u00e9 komponenty. To je ofici\u00e1ln\u00ed kurz Huawei \u2013 p\u0159echod na komponenty vlastn\u00ed v\u00fdroby nebo, v ka\u017ed\u00e9m p\u0159\u00edpad\u011b, vyr\u00e1b\u011bn\u00e9 v zem\u00edch, kter\u00e9 se ne\u0159\u00edd\u00ed politikou USA.<\/p>\n<p>Toto je to, co m\u016f\u017eete vid\u011bt na samotn\u00e9 \u0159adi\u010dov\u00e9 desce.<\/p>\n<ul>\n<li>Univerz\u00e1ln\u00ed s\u00ed\u0165ov\u00e9 rozhran\u00ed (\u010dip Hisilicon 1822), odpov\u011bdn\u00e9 za p\u0159ipojen\u00ed k Fibre Channel nebo Ethernetu.<\/li>\n<li>BMC \u010dip, konkr\u00e9tn\u011b Hisilicon 1710, zaji\u0161\u0165uj\u00edc\u00ed vzd\u00e1lenou dostupnost syst\u00e9mu pro plnohodnotn\u00e9 vzd\u00e1len\u00e9 ovl\u00e1d\u00e1n\u00ed a monitorov\u00e1n\u00ed syst\u00e9mu. Tyto \u010dipy se pou\u017e\u00edvaj\u00ed tak\u00e9 v na\u0161ich serverech a v dal\u0161\u00edch \u0159e\u0161en\u00edch.<\/li>\n<li>Centr\u00e1ln\u00ed procesor, p\u0159edstavovan\u00fd \u010dipem Kunpeng 920 vyvinut\u00fdm na architektu\u0159e ARM od Huawei. Je to ten, kter\u00fd je zobrazen na sch\u00e9matu v\u00fd\u0161e, a\u010dkoli v jin\u00fdch \u0159adi\u010d\u00edch mohou b\u00fdt nainstalov\u00e1ny modely odli\u0161n\u00e9 od n\u011bj s jin\u00fdm po\u010dtem jader, jinou taktovac\u00ed frekvenc\u00ed atd. Po\u010det procesor\u016f v jednom \u0159adi\u010di se m\u011bn\u00ed model od modelu. Nap\u0159\u00edklad ve vy\u0161\u0161\u00edch s\u00e9ri\u00edch Dorado V6 je na jedn\u00e9 desce \u010dty\u0159i.<\/li>\n<li>\u0158\u00edditel SSD (\u010dip Hisilicon 1812e), kter\u00fd podporuje p\u0159ipojen\u00ed jak SAS, tak NVMe \u00falo\u017ei\u0161\u0165. Dodejme, \u017ee Huawei sama vyr\u00e1b\u00ed SSD, av\u0161ak nevyr\u00e1b\u00ed samotn\u00e9 NAND bu\u0148ky, nebo\u0165 je up\u0159ednost\u0148uje nakupovat od \u010dty\u0159 nejv\u011bt\u0161\u00edch sv\u011btov\u00fdch v\u00fdrobc\u016f ve form\u011b neroz\u0159ezan\u00fdch k\u0159em\u00edkov\u00fdch desek. \u0158ez\u00e1n\u00ed, testov\u00e1n\u00ed a balen\u00ed do \u010dip\u016f prov\u00e1d\u00ed Huawei sama, po \u010dem\u017e je vyd\u00e1v\u00e1 pod vlastn\u00ed zna\u010dkou.<\/li>\n<li>\u010cip um\u011bl\u00e9 inteligence - Ascend 310. Ve v\u00fdchoz\u00edm nastaven\u00ed je na \u0159adi\u010di nep\u0159\u00edtomen a instaluje se prost\u0159ednictv\u00edm samostatn\u00e9 karty, kter\u00e1 zab\u00edr\u00e1 jeden z slot\u016f ur\u010den\u00fdch pro s\u00ed\u0165ov\u00e9 adapt\u00e9ry. \u010cip se pou\u017e\u00edv\u00e1 k zaji\u0161t\u011bn\u00ed inteligentn\u00edho chov\u00e1n\u00ed cache, \u0159\u00edzen\u00ed v\u00fdkonu nebo proces\u016f deduplikace a komprese. V\u0161echny tyto \u00fakoly mohou b\u00fdt \u0159e\u0161eny tak\u00e9 pomoc\u00ed centr\u00e1ln\u00edho procesoru, ale \u010dip AI umo\u017e\u0148uje prov\u00e1d\u011bt to mnohem efektivn\u011bji.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/5010fde2ee0cfa5ca45b21d5f590a4c6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Zvl\u00e1\u0161\u0165 o procesorech Kunpeng<\/h2>\n<p>\nProcesor Kunpeng p\u0159edstavuje syst\u00e9m na \u010dipu (SoC), kde krom\u011b v\u00fdpo\u010detn\u00edho bloku existuj\u00ed hardwarov\u00e9 moduly, kter\u00e9 urychluj\u00ed r\u016fzn\u00e9 procesy, nap\u0159\u00edklad v\u00fdpo\u010det kontroln\u00edch sou\u010dt\u016f nebo prov\u00e1d\u011bn\u00ed 'mazac\u00edho k\u00f3du' (erasure coding). V n\u011bm je tak\u00e9 implementov\u00e1na hardwarov\u00e1 podpora SAS, Ethernet, DDR4 (od \u0161esti do osmi kan\u00e1l\u016f) apod. To v\u0161echno umo\u017e\u0148uje spole\u010dnosti Huawei vytv\u00e1\u0159et \u0159adi\u010de \u00falo\u017ei\u0161\u0165, kter\u00e9 nemaj\u00ed v\u00fdkonov\u011b zaost\u00e1vat za klasick\u00fdmi \u0159e\u0161en\u00edmi Intel. <\/p>\n<p>Krom\u011b toho vlastn\u00ed \u0159e\u0161en\u00ed na z\u00e1klad\u011b architektury ARM umo\u017e\u0148uj\u00ed spole\u010dnosti Huawei vytv\u00e1\u0159et plnohodnotn\u00e1 serverov\u00e1 \u0159e\u0161en\u00ed a nab\u00edzet je sv\u00fdm z\u00e1kazn\u00edk\u016fm jako alternativu k x86.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/0c13fba19cb159601be08bab954337cf.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Nov\u00e1 architektura Dorado V6\u2026<\/h2>\n<p>\nVnit\u0159n\u00ed architektura \u00falo\u017ei\u0161\u0165 Dorado V6 vy\u0161\u0161\u00ed \u0159ady je reprezentov\u00e1na \u010dty\u0159mi hlavn\u00edmi subdom\u00e9nami (tov\u00e1rnami). <\/p>\n<p>Prvn\u00ed tov\u00e1rna je spole\u010dn\u00fdm frontendem (s\u00ed\u0165ov\u00e9 rozhran\u00ed odpov\u00eddaj\u00edc\u00ed za spojen\u00ed s SAN tov\u00e1rnou nebo hostiteli). <\/p>\n<p>Druh\u00e1 - sada \u0159adi\u010d\u016f, z nich\u017e ka\u017ed\u00fd m\u016f\u017ee podle protokolu RDMA 'dostat se' jak k jak\u00e9koli s\u00ed\u0165ov\u00e9 kart\u011b frontendu, tak k sousedn\u00edmu 'motoru' (engine), co\u017e p\u0159edstavuje sk\u0159\u00ed\u0148 se \u010dty\u0159mi \u0159adi\u010di, a tak\u00e9 spole\u010dn\u00fdmi bloky nap\u00e1jen\u00ed a chlazen\u00ed. Aktu\u00e1ln\u011b mohou modely Dorado V6 t\u0159\u00eddy hi-end b\u00fdt vybaveny dv\u011bma takov\u00fdmi 'motory' (tedy osmi \u0159adi\u010di).<\/p>\n<p>T\u0159et\u00ed fabriky se star\u00e1 o backend a skl\u00e1d\u00e1 se z RDMA 100G s\u00ed\u0165ov\u00fdch karet.<\/p>\n<p>Nakonec \u010dtvrt\u00e1 fabriky \u201eve hardwaru\u201c je p\u0159edstavena p\u0159ipojiteln\u00fdmi inteligentn\u00edmi policemi s \u00falo\u017ei\u0161ti.<\/p>\n<p>Takov\u00e1 symetrick\u00e1 struktura odhaluje ve\u0161ker\u00fd potenci\u00e1l technologie NVMe a zaru\u010duje vysok\u00fd v\u00fdkon a spolehlivost. Proces vkl\u00e1d\u00e1n\u00ed a v\u00fdstupu je maxim\u00e1ln\u011b paralelizov\u00e1n mezi procesory a j\u00e1dry, co\u017e zaji\u0161\u0165uje sou\u010dasn\u00e9 \u010dten\u00ed a psan\u00ed v mnoha vl\u00e1knech.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/8317bee185aa0fb1802998dce0a69b70.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>\u2026a co n\u00e1m to dalo<\/h2>\n<p>\nMaxim\u00e1ln\u00ed v\u00fdkon \u0159e\u0161en\u00ed Dorado V6 p\u0159ibli\u017en\u011b t\u0159ikr\u00e1t p\u0159evy\u0161uje hodnoty syst\u00e9m\u016f p\u0159edchoz\u00ed generace (t\u00e9\u017ee t\u0159\u00eddy) a m\u016f\u017ee dos\u00e1hnout a\u017e 20 milion\u016f IOPS. <\/p>\n<p>To je d\u00e1no t\u00edm, \u017ee v minul\u00e9m \u043f\u043e\u043a\u043e\u043b\u0435\u043d\u0438\u0438 za\u0159\u00edzen\u00ed podpora NVMe byla roz\u0161\u00ed\u0159ena pouze na p\u0159ipojiteln\u00e9 police s \u00falo\u017ei\u0161ti. Nyn\u00ed je v\u0161ak p\u0159\u00edtomna ve v\u0161ech f\u00e1z\u00edch, od hostitele a\u017e po SSD. S\u00ed\u0165 backendu tak\u00e9 pro\u0161la zm\u011bnami: SAS\/PCIe ustoupily m\u00edstu RoCEv2 s propustnost\u00ed 100 Gbit\/s. <\/p>\n<p>Zm\u011bnil se tak\u00e9 samotn\u00fd form factor SSD. Pokud d\u0159\u00edve na polici 2U p\u0159ipadalo 25 \u00falo\u017ei\u0161\u0165, nyn\u00ed je to zv\u00fd\u0161eno na 36 disk\u016f fyzick\u00e9ho form\u00e1tu palm-sized. Krom\u011b toho se police \u201einteligentn\u011bji\u201c chovaj\u00ed. V ka\u017ed\u00e9 z nich nyn\u00ed existuje redundantn\u00ed syst\u00e9m dvou \u0159\u00eddic\u00edch jednotek na b\u00e1zi \u010dip\u016f ARM, podobn\u00fdch t\u011bm, kter\u00e9 jsou nainstalov\u00e1ny v centr\u00e1ln\u00edch \u0159\u00eddic\u00edch jednotk\u00e1ch. <\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/f109abaf3318ed2cc7831216562f0689.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZat\u00edm se zab\u00fdvaj\u00ed pouze reorganizac\u00ed dat, ale s vyd\u00e1n\u00edm nov\u00fdch firmwar\u016f se k nim p\u0159id\u00e1 komprese a erasure coding, co\u017e umo\u017en\u00ed sn\u00ed\u017eit z\u00e1t\u011b\u017e na hlavn\u00ed \u0159\u00eddic\u00ed jednotky z 15% na 5%. P\u0159enesen\u00ed \u010d\u00e1sti \u00faloh na polici z\u00e1rove\u0148 uvol\u0148uje i propustnost intern\u00ed s\u00edt\u011b. A to v\u0161e v\u00fdrazn\u011b zvy\u0161uje potenci\u00e1l \u0161k\u00e1lovatelnosti syst\u00e9mu.<\/p>\n<p>Komprese a deduplikace v S\u00daS p\u0159edchoz\u00ed generace byly prov\u00e1d\u011bny s bloky pevn\u00e9 d\u00e9lky. Nyn\u00ed v\u0161ak p\u0159ibyla re\u017eim pr\u00e1ce s bloky prom\u011bnn\u00e9 d\u00e9lky, kter\u00fd je zat\u00edm nutn\u00e9 aktivovat ru\u010dn\u011b. N\u00e1sledn\u00e9 firmwary mohou toto okol\u00ed zm\u011bnit.<\/p>\n<p>Tak\u00e9 stru\u010dn\u011b o toleranci k poruch\u00e1m. Dorado V3 si udr\u017eelo funk\u010dnost, pokud selhal jeden \u0159\u00eddic\u00ed jednotka ze dvou. Dorado V6 zajist\u00ed dostupnost dat i v p\u0159\u00edpad\u011b, \u017ee postupn\u011b sel\u017ee sedm \u0159\u00eddic\u00edch jednotek z osmi nebo sou\u010dasn\u011b \u010dty\u0159i z jednoho \u201emotoru\u201c.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/7bc9a968883c56545ba33c2849723c37.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Spolehlivost z pohledu ekonomiky<\/h2>\n<p>\nNed\u00e1vno mezi z\u00e1kazn\u00edky Huawei byl proveden pr\u016fzkum, jak\u00e9 jednoduch\u00e9 jednotliv\u00e9 prvky IT infrastruktury pova\u017euj\u00ed za p\u0159ijateln\u00e9. V\u011bt\u0161ina respondent\u016f tolerovala hypotetickou situaci, kdy aplikace neodpov\u00edd\u00e1 n\u011bkolik stovek sekund. Pro opera\u010dn\u00ed syst\u00e9m nebo host-adapt\u00e9r sb\u011brnice se kritick\u00e1 doba v\u00fdpadku vyzna\u010dila des\u00edtkami sekund (v podstat\u011b doba restartu). Je\u0161t\u011b vy\u0161\u0161\u00ed po\u017eadavky kladou z\u00e1kazn\u00edci na s\u00ed\u0165: jej\u00ed propustnost by nem\u011bla klesnout o v\u00edce ne\u017e 10\u201320 sekund. Jak je snadno uhodnout, nejkriti\u010dt\u011bj\u0161\u00edmi se uk\u00e1zaly b\u00fdt poruchy \u00falo\u017en\u00fdch syst\u00e9m\u016f. Z pohledu obchodn\u00edch p\u0159edstavitel\u016f by doba v\u00fdpadku S\u00daD nem\u011bla p\u0159ekro\u010dit\u2026 n\u011bkolik sekund ro\u010dn\u011b!<\/p>\n<p>Jin\u00fdmi slovy, pokud bankovn\u00ed aplikace klienta neodpov\u00edd\u00e1 100 sekund, katastrof\u00e1ln\u00ed n\u00e1sledky to pravd\u011bpodobn\u011b nezp\u016fsob\u00ed. Ale pokud tolik nefunguje S\u00daD, m\u016f\u017ee doj\u00edt k zastaven\u00ed podnik\u00e1n\u00ed a v\u00fdznamn\u00fdm finan\u010dn\u00edm ztr\u00e1t\u00e1m.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/99bea99afab828e9341ce9227ca5434b.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<blockquote><p>Na diagramu v\u00fd\u0161e je uvedena cena za hodinu provozu pro deset nejv\u011bt\u0161\u00edch bank (\u00fadaje Forbes z roku 2017). Souhlas\u00edte, \u017ee pokud se va\u0161e spole\u010dnost velikost\u00ed bl\u00ed\u017e\u00ed \u010d\u00ednsk\u00fdm bank\u00e1m, obh\u00e1jit nutnost zakoupit S\u00daD za n\u011bkolik milion\u016f dolar\u016f nebude tak obt\u00ed\u017en\u00e9. Spr\u00e1vn\u011b lze tvrdit i opak: pokud podnik nezaznamen\u00e1v\u00e1 v\u00fdznamn\u00e9 ztr\u00e1ty p\u0159i v\u00fdpadku, pravd\u011bpodobn\u011b si S\u00daD t\u0159\u00eddy hi-end nekoup\u00ed. V ka\u017ed\u00e9m p\u0159\u00edpad\u011b je d\u016fle\u017eit\u00e9 m\u00edt p\u0159edstavu o tom, jak velk\u00e1 d\u00edra by se mohla objevit ve va\u0161\u00ed pen\u011b\u017eence, zat\u00edmco syst\u00e9mov\u00fd administr\u00e1tor se vyrovn\u00e1v\u00e1 s porouchan\u00fdm syst\u00e9mem pro ukl\u00e1d\u00e1n\u00ed dat.<\/p><\/blockquote>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/42cbb0eec60df8471b2ed795d45e0aff.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Sekunda na havarijn\u00ed p\u0159epnut\u00ed<\/h2>\n<p>\nNa ilustraci A v\u00fd\u0161e m\u016f\u017eete vid\u011bt n\u00e1\u0161 syst\u00e9m p\u0159edchoz\u00ed generace Dorado V3. \u010cty\u0159i jeho kontrol\u00e9ry pracuj\u00ed v p\u00e1rech, a kopie cache jsou uchov\u00e1v\u00e1ny pouze ve dvou kontrol\u00e9rech. Kontrol\u00e9ry uvnit\u0159 p\u00e1ru mohou p\u0159erozd\u011blovat z\u00e1t\u011b\u017e. Jak vid\u00edte, zde nejsou \u017e\u00e1dn\u00e9 \"fabriky\" frontendu a backendu, tak\u017ee ka\u017ed\u00e9 z polic s jednotkami je p\u0159ipojeno ke konkr\u00e9tn\u00ed p\u00e1ru kontrol\u00e9r\u016f.<\/p>\n<p>Na sch\u00e9matu Solution B je zn\u00e1zorn\u011bno sou\u010dasn\u00e9 \u0159e\u0161en\u00ed od jin\u00e9ho dodavatele (pozn\u00e1te?). Ji\u017e zde existuj\u00ed front-end a back-end farmy a \u00falo\u017ei\u0161t\u011b jsou p\u0159ipojena p\u0159\u00edmo ke \u010dty\u0159em kontrol\u00e9r\u016fm. Pravda, v pr\u00e1ci intern\u00edch algoritm\u016f syst\u00e9mu existuj\u00ed m\u00e9n\u011b z\u0159ejm\u00e9 nuance na prvn\u00ed pohled.<\/p>\n<p>Vpravo je p\u0159edstavena na\u0161e aktu\u00e1ln\u00ed architektura \u00falo\u017ei\u0161t\u011b Dorado V6 se v\u0161emi intern\u00edmi prvky. Pod\u00edvejme se, jak tyto syst\u00e9my zvl\u00e1daj\u00ed typickou situaci \u2014 selh\u00e1n\u00ed jednoho kontrol\u00e9ru.<\/p>\n<p>V klasick\u00fdch syst\u00e9mech, mezi kter\u00e9 pat\u0159\u00ed i Dorado V3, dosahuje doba pot\u0159ebn\u00e1 na p\u0159erozd\u011blen\u00ed z\u00e1t\u011b\u017ee p\u0159i selh\u00e1n\u00ed a\u017e \u010dty\u0159 sekund. Po tuto dobu je vstup-v\u00fdstup zcela zastaven. V \u0159e\u0161en\u00ed Solution B od na\u0161ich koleg\u016f, navzdory modern\u011bj\u0161\u00ed architektu\u0159e, je doba ne\u010dinnosti p\u0159i selh\u00e1n\u00ed dokonce je\u0161t\u011b del\u0161\u00ed \u2014 \u0161est sekund.<\/p>\n<p>\u00dalo\u017ei\u0161t\u011b Dorado V6 obnovuje svou \u010dinnost pouhou jednu sekundu po selh\u00e1n\u00ed. tohoto v\u00fdsledku je dosa\u017eeno d\u00edky homogenn\u00edmu intern\u00edmu RDMA prost\u0159ed\u00ed, kter\u00e9 umo\u017e\u0148uje kontrol\u00e9ru p\u0159istupovat k \u201aciz\u00ed\u2018 pam\u011bti. Druh\u00fdm d\u016fle\u017eit\u00fdm bodem je existencia front-end farmy, d\u00edky kter\u00e9 se cesta pro hosta nem\u011bn\u00ed. Port z\u016fst\u00e1v\u00e1 stejn\u00fd, a z\u00e1t\u011b\u017e je jednodu\u0161e p\u0159esm\u011brov\u00e1na na funk\u010dn\u00ed kontrol\u00e9ry prost\u0159ednictv\u00edm \u0159idi\u010d\u016f multipassing.<\/p>\n<p>Selh\u00e1n\u00ed druh\u00e9ho kontrol\u00e9ru v Dorado V6 je zpracov\u00e1no za jednu sekundu stejn\u00fdm zp\u016fsobem. U Dorado V3 to trv\u00e1 p\u0159ibli\u017en\u011b \u0161est sekund, zat\u00edmco u \u0159e\u0161en\u00ed jin\u00e9ho dodavatele dev\u011bt. Pro mnoho datab\u00e1zov\u00fdch syst\u00e9m\u016f jsou tyto intervaly ji\u017e pova\u017eov\u00e1ny za nep\u0159ijateln\u00e9, proto\u017ee po tuto dobu se syst\u00e9m p\u0159epne do re\u017eimu standby a p\u0159estane pracovat. To se prim\u00e1rn\u011b t\u00fdk\u00e1 datab\u00e1zov\u00fdch syst\u00e9m\u016f, kter\u00e9 se skl\u00e1daj\u00ed z mnoha odd\u00edl\u016f.<\/p>\n<p>Selh\u00e1n\u00ed t\u0159et\u00edho kontrol\u00e9ru Solution A nelze p\u0159e\u017e\u00edt. Jednodu\u0161e proto, \u017ee dojde k ztr\u00e1t\u011b p\u0159\u00edstupu k \u010d\u00e1sti disk\u016f s daty. Naproti tomu Solution B v takov\u00e9 situaci obnovuje funk\u010dnost, co\u017e trv\u00e1, stejn\u011b jako v p\u0159edchoz\u00edm p\u0159\u00edpad\u011b, dev\u011bt sekund.<\/p>\n<p>Jak je na tom Dorado V6? Jedna sekunda.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/dd7e3652ce351c221dc87956ee9673e9.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Co se d\u00e1 stihnout za sekundu?<\/h2>\n<p>\nT\u00e9m\u011b\u0159 nic, ale to n\u00e1m ani nevad\u00ed. Je\u0161t\u011b jednou zopakujeme, \u017ee ve syst\u00e9mu Dorado V6 t\u0159\u00eddy hi-end je frontend odd\u011blen od \u0159\u00eddic\u00edho syst\u00e9mu. To znamen\u00e1, \u017ee neexistuj\u00ed pevn\u011b vyhrazen\u00e9 porty pro konkr\u00e9tn\u00ed \u0159\u00eddic\u00ed syst\u00e9m. Rekonstrukce v p\u0159\u00edpad\u011b poruchy neznamen\u00e1 hled\u00e1n\u00ed alternativn\u00edch cest nebo p\u0159einitializaci multipassingu. Syst\u00e9m pokra\u010duje v provozu, jak byl.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/11a653ee038856cf63937846863ae9b8.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Odolnost v\u016f\u010di \u010detn\u00fdm poruch\u00e1m<\/h2>\n<p>\nStar\u0161\u00ed modely Dorado V6 bez probl\u00e9m\u016f p\u0159e\u017e\u00edvaj\u00ed sou\u010dasn\u00fd v\u00fdpadek dvou jak\u00fdchkoli (!) \u0159\u00eddic\u00edch syst\u00e9m\u016f z jak\u00e9hokoli \u201eenginu\u201c. To se poda\u0159ilo d\u00edky tomu, \u017ee nyn\u00ed \u0159e\u0161en\u00ed uchov\u00e1v\u00e1 t\u0159i kopie cache. I p\u0159i dvojit\u00e9m v\u00fdpadku je v\u017edy k dispozici jedna celistv\u00e1 kopie.<\/p>\n<p>Synchronn\u00ed selh\u00e1n\u00ed v\u0161ech \u010dty\u0159 \u0159\u00eddic\u00edch syst\u00e9m\u016f v jednom z \u201eenginu\u201c tak\u00e9 nezp\u016fsob\u00ed fat\u00e1ln\u00ed n\u00e1sledky, proto\u017ee v\u0161echny t\u0159i kopie cache jsou v ka\u017ed\u00e9m okam\u017eiku rozd\u011bleny mezi \u201eenginy\u201c. Dodr\u017eov\u00e1n\u00ed t\u00e9to logiky sledov\u00e1no samotn\u00fdm syst\u00e9mem.<\/p>\n<p>Nakonec, zcela nepravd\u011bpodobn\u00fd sc\u00e9n\u00e1\u0159 je sekven\u010dn\u00ed v\u00fdpadek sedmi \u0159\u00eddic\u00edch syst\u00e9m\u016f ze osmi. P\u0159i\u010dem\u017e minim\u00e1ln\u00edinterval mezi jednotliv\u00fdmi poruchami, nezbytn\u00fd pro zachov\u00e1n\u00ed funk\u010dnosti, je 15 minut. B\u011bhem t\u00e9to doby se \u00falo\u017ei\u0161t\u011b dok\u00e1\u017ee prov\u00e9st operace pot\u0159ebn\u00e9 pro migraci cache.<\/p>\n<p>Posledn\u00ed zbyl\u00fd \u0159\u00eddic\u00ed syst\u00e9m zajist\u00ed provoz datov\u00e9ho \u00falo\u017ei\u0161t\u011b a udr\u017eov\u00e1n\u00ed cache po dobu p\u011bti dn\u016f (v\u00fdchoz\u00ed hodnota, kterou lze snadno zm\u011bnit v nastaven\u00ed). Pot\u00e9 bude cache vypnuta, ale provoz \u00falo\u017ei\u0161t\u011b pokra\u010duje.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/29bf3b2cd0feb5df5886a00c519c3c29.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Bezprobl\u00e9mov\u00e9 aktualizace<\/h2>\n<p>\nNov\u00fd opera\u010dn\u00ed syst\u00e9m Dorado V6 umo\u017e\u0148uje aktualizaci firmwaru \u00falo\u017ei\u0161t\u011b bez restartov\u00e1n\u00ed \u0159\u00eddic\u00edch syst\u00e9m\u016f.<\/p>\n<p>Opera\u010dn\u00ed syst\u00e9m, stejn\u011b jako v p\u0159\u00edpad\u011b p\u0159edchoz\u00edch \u0159e\u0161en\u00ed, je postaven na z\u00e1kladu Linuxu, av\u0161ak mnoh\u00e9 provozn\u00ed procesy byly p\u0159esunuty z j\u00e1dra do u\u017eivatelsk\u00e9ho re\u017eimu. V\u011bt\u0161ina funkc\u00ed, nap\u0159\u00edklad odpov\u011bdn\u00fdch za deduplikaci a kompresi, jsou nyn\u00ed b\u011b\u017en\u00e9 d\u00e9mony pracuj\u00edc\u00ed na pozad\u00ed. D\u00edky tomu nen\u00ed pro aktualizaci jednotliv\u00fdch modul\u016f nutn\u00e9 m\u011bnit cel\u00fd opera\u010dn\u00ed syst\u00e9m. Nap\u0159\u00edklad pro p\u0159id\u00e1n\u00ed podpory pro nov\u00fd protokol sta\u010d\u00ed pouze vypnout odpov\u00eddaj\u00edc\u00ed programov\u00fd modul a spustit nov\u00fd.<\/p>\n<p>Je jasn\u00e9, \u017ee ot\u00e1zky aktualizace syst\u00e9mu z\u016fst\u00e1vaj\u00ed, proto\u017ee i v j\u00e1dru mohou b\u00fdt prvky, kter\u00e9 vy\u017eaduj\u00ed aktualizaci. Podle na\u0161ich pozorov\u00e1n\u00ed je jich v\u0161ak m\u00e9n\u011b ne\u017e 6 % z celkov\u00e9ho po\u010dtu. To umo\u017e\u0148uje restartov\u00e1n\u00ed kontroler\u016f des\u00edtkykr\u00e1t m\u00e9n\u011b \u010dasto ne\u017e d\u0159\u00edve.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/4ac7ae484a2811c5550d85da0bfe13df.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Katastrof\u00e1ln\u00ed \u0159e\u0161en\u00ed a \u0159e\u0161en\u00ed vysok\u00e9 dostupnosti (HA\/DR)<\/h2>\n<p>\nDorado V6 je \u201eout of the box\u201c p\u0159ipraveno na integraci do geograficky distribuovan\u00fdch \u0159e\u0161en\u00ed, m\u011bstsk\u00fdch metro klastr\u016f a \u201etrojit\u00fdch\u201c datov\u00fdch center.<\/p>\n<p>Vlevo na v\u00fd\u0161e uveden\u00e9m obr\u00e1zku je ji\u017e zn\u00e1m\u00fd metro klastr. Dva \u00falo\u017ei\u0161t\u011b pracuj\u00ed v re\u017eimu active\/active na vzd\u00e1lenosti a\u017e 100 km od sebe. Takov\u00e1 infrastruktura s jedn\u00edm nebo n\u011bkolika kv\u00f3rumov\u00fdmi servery m\u016f\u017ee b\u00fdt podporov\u00e1na \u0159e\u0161en\u00edmi r\u016fzn\u00fdch spole\u010dnost\u00ed, v\u010detn\u011b na\u0161eho cloudov\u00e9ho opera\u010dn\u00edho syst\u00e9mu FusionSphere. V t\u011bchto projektech se zvl\u00e1\u0161tn\u00ed d\u016fraz klade na charakteristiky kan\u00e1lu mezi lokalitami, v\u0161echny ostatn\u00ed \u00fakoly pak p\u0159eb\u00edr\u00e1 funkce HyperMetro, dostupn\u00e1 op\u011bt \u201eout of the box\u201c. Je mo\u017en\u00e1 integrace p\u0159es Fibre Channel, stejn\u011b jako p\u0159es iSCSI v IP s\u00edt\u00edch, pokud se objev\u00ed takov\u00e1 pot\u0159eba. Nen\u00ed u\u017e t\u0159eba m\u00edt vyhrazenou \u201etmavou\u201c optiku, proto\u017ee syst\u00e9m je schopen propojit se p\u0159es existuj\u00edc\u00ed kan\u00e1ly.<\/p>\n<p>P\u0159i stavb\u011b takov\u00fdch syst\u00e9m\u016f je jedin\u00fdm hardwarov\u00fdm po\u017eadavkem na \u00falo\u017ei\u0161t\u011b vy\u010dlen\u011bn\u00ed port\u016f pro replikaci. Sta\u010d\u00ed zakoupit licenci, spustit kv\u00f3rumov\u00e9 servery \u2014 fyzick\u00e9 nebo virtu\u00e1ln\u00ed \u2014 a zajistit IP konektivitu k kontroler\u016fm (10 Mbit\/s, 50 ms).<\/p>\n<p>Tuto architekturu je snadn\u00e9 p\u0159en\u00e9st na syst\u00e9m se t\u0159emi datov\u00fdmi centry (viz prav\u00e1 \u010d\u00e1st obr\u00e1zku). Nap\u0159\u00edklad kdy\u017e dv\u011b datov\u00e1 centra pracuj\u00ed v re\u017eimu metro klastru a t\u0159et\u00ed lokalita, nach\u00e1zej\u00edc\u00ed se v\u00edce ne\u017e 100 km daleko, vyu\u017e\u00edv\u00e1 asynchronn\u00ed replikaci.<\/p>\n<p>Syst\u00e9m technologicky podporuje r\u016fzn\u00e9 obchodn\u00ed sc\u00e9n\u00e1\u0159e, kter\u00e9 budou realizov\u00e1ny v p\u0159\u00edpad\u011b rozs\u00e1hl\u00e9ho excesu.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/52312571067502aa5aa1d34674dfa8de.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>\u017divotaschopnost metro klastru p\u0159i n\u011bkolika selh\u00e1n\u00edch<\/h2>\n<p>\nNa v\u00fd\u0161e uveden\u00e9m a n\u00ed\u017ee uveden\u00e9m obr\u00e1zku je tak\u00e9 uk\u00e1z\u00e1n klasick\u00fd metro klastr slo\u017een\u00fd ze dvou \u00falo\u017ei\u0161\u0165 a kv\u00f3rumov\u00e9ho serveru. Jak vid\u00edte, v \u0161esti z dev\u00edti mo\u017en\u00fdch sc\u00e9n\u00e1\u0159\u016f \u010detn\u00fdch selh\u00e1n\u00ed na\u0161e infrastruktura udr\u017e\u00ed funk\u010dnost.<\/p>\n<p>Nap\u0159\u00edklad, ve druh\u00e9m sc\u00e9n\u00e1\u0159i, p\u0159i selh\u00e1n\u00ed kv\u00f3rumov\u00e9ho serveru a synchronizace mezi lokalitami, z\u016fst\u00e1v\u00e1 syst\u00e9m funk\u010dn\u00ed, proto\u017ee druh\u00e1 lokalita p\u0159est\u00e1v\u00e1 pracovat. Toto chov\u00e1n\u00ed je ji\u017e zakotveno ve vestav\u011bn\u00fdch algoritmech.<\/p>\n<p>I po t\u0159ech selh\u00e1n\u00edch m\u016f\u017ee b\u00fdt p\u0159\u00edstup k informac\u00edm zachov\u00e1n, pokud interval mezi nimi \u010dinil alespo\u0148 15 sekund.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/1b14cf534dfa60e0e771c2565ebf0d35.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Obvykl\u00fd trumf v ruk\u00e1vu<\/h2>\n<p>\nP\u0159ipome\u0148me, \u017ee Huawei vyr\u00e1b\u00ed nejen \u00falo\u017ei\u0161t\u011b dat, ale i kompletn\u00ed spektrum s\u00ed\u0165ov\u00e9ho vybaven\u00ed. A\u0165 u\u017e zvol\u00edte jak\u00e9hokoli dodavatele \u00falo\u017ei\u0161t\u011b, pokud je mezi lokalitami pou\u017eita s\u00ed\u0165 WDM, v 90 % p\u0159\u00edpad\u016f bude postavena na \u0159e\u0161en\u00edch na\u0161\u00ed spole\u010dnosti. Vznik\u00e1 tedy logick\u00e1 ot\u00e1zka: pro\u010d shroma\u017e\u010fovat zoo syst\u00e9m\u016f, kdy\u017e ve\u0161ker\u00e9 garantovan\u011b kompatibiln\u00ed \u201e\u017eelezo\u201c lze z\u00edskat u jednoho dodavatele?<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/7b327879c217f00fc1799df0aae6be9b.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>K ot\u00e1zce v\u00fdkonu<\/h2>\n<p>\nSnad u\u017e nen\u00ed pot\u0159eba nikoho p\u0159esv\u011bd\u010dovat, \u017ee p\u0159echod na All-Flash \u00falo\u017ei\u0161t\u011b v\u00fdrazn\u011b sni\u017euje n\u00e1klady na \u00fadr\u017ebu infrastruktury, proto\u017ee v\u0161echny rutinn\u00ed operace prob\u00edhaj\u00ed n\u011bkolikan\u00e1sobn\u011b rychleji. To dokazuj\u00ed v\u0161ichni dodavatel\u00e9 podobn\u00e9ho vybaven\u00ed. Mezit\u00edm mnoho dodavatel\u016f za\u010d\u00edn\u00e1 klamat, kdy\u017e se mluv\u00ed o poklesu v\u00fdkonu p\u0159i zapnut\u00ed r\u016fzn\u00fdch re\u017eim\u016f pr\u00e1ce \u00falo\u017ei\u0161t\u011b.<\/p>\n<p>V na\u0161em oboru je \u0161iroce praktikov\u00e1no vyd\u00e1n\u00ed \u00falo\u017ei\u0161t\u011b na zku\u0161ebn\u00ed provoz na jeden a\u017e dva dny. Dodavatel spust\u00ed 20minutov\u00fd test na pr\u00e1zdn\u00e9m syst\u00e9mu, p\u0159i\u010dem\u017e z\u00edsk\u00e1v\u00e1 astronomick\u00e9 v\u00fdkonnostn\u00ed ukazatele. A v re\u00e1ln\u00e9m provozu se rychle ukazuj\u00ed \u201ehrozby z podvodn\u00ed mapy\u201c. Ji\u017e po dni kr\u00e1sn\u00e9 hodnoty IOPS klesaj\u00ed na polovinu a\u017e t\u0159etinu, a pokud je \u00falo\u017ei\u0161t\u011b zapln\u011bno na 80 %, jsou je\u0161t\u011b ni\u017e\u0161\u00ed. P\u0159i zapnut\u00ed RAID 5 m\u00edsto RAID 10 ztr\u00e1c\u00edte dal\u0161\u00edch 10-15 %, a v re\u017eimu metro-klastru se v\u00fdkon nav\u00edc op\u011bt sn\u00ed\u017e\u00ed.<\/p>\n<p>V\u0161e, co bylo uvedeno v\u00fd\u0161e, se net\u00fdk\u00e1 Dorado V6. Na\u0161i z\u00e1kazn\u00edci maj\u00ed mo\u017enost spustit test v\u00fdkonu na v\u00edkend nebo alespo\u0148 na noc. Tehdy se projevuje sb\u011br odpadk\u016f a tak\u00e9 se ukazuje, jak aktivace r\u016fzn\u00fdch mo\u017enost\u00ed \u2013 nap\u0159\u00edklad snapshot\u016f a replikace \u2013 ovliv\u0148uje dosa\u017een\u00e9 IOPS.<\/p>\n<p>Ve variant\u011b Dorado V6 snapshoty a RAID s parity prakticky neovliv\u0148uj\u00ed v\u00fdkon (3\u20135 % nam\u00edsto 10-15 %). Vypr\u00e1zdn\u011bn\u00ed pam\u011b\u0165ov\u00fdch bun\u011bk (napln\u011bn\u00ed nulami), komprese a deduplikace na \u00falo\u017ei\u0161t\u00edch zapln\u011bn\u00fdch z 80 % v\u017edy ovliv\u0148uj\u00ed celkovou rychlost zpracov\u00e1n\u00ed dotaz\u016f. Ale pr\u00e1v\u011b Dorado V6 je zaj\u00edmav\u00e9 t\u00edm, \u017ee a\u0165 u\u017e aktivujete jakoukoliv kombinaci funkc\u00ed a ochrann\u00fdch mechanism\u016f, celkov\u00fd v\u00fdkon \u00falo\u017ei\u0161t\u011b neklesne pod 80 % hodnoty dosa\u017een\u00e9 bez z\u00e1t\u011b\u017ee.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/b4aebc1ed40e0ff68927984783d55234.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Vyva\u017eov\u00e1n\u00ed z\u00e1t\u011b\u017ee<\/h2>\n<p>\nVysok\u00fd v\u00fdkon Dorado V6 je dosa\u017een d\u00edky vyv\u00e1\u017een\u00ed v ka\u017ed\u00e9 f\u00e1zi, a to konkr\u00e9tn\u011b:<\/p>\n<ul>\n<li>multipassov\u00e1n\u00ed;<\/li>\n<li>pou\u017e\u00edv\u00e1n\u00ed n\u011bkolika p\u0159ipojen\u00ed z jednoho hostitele;<\/li>\n<li>existenci frontendov\u00e9 fabriky;<\/li>\n<li>paralelizaci pr\u00e1ce \u0159adi\u010d\u016f \u00falo\u017ei\u0161t\u011b;<\/li>\n<li>rozlo\u017een\u00ed z\u00e1t\u011b\u017ee na v\u0161ech \u00falo\u017ei\u0161t\u00edch na \u00farovni RAID 2.0+.<\/li>\n<\/ul>\n<p>\nV z\u00e1sad\u011b je to obecn\u00e1 praxe. V dne\u0161n\u00ed dob\u011b m\u00e1lokdo uchov\u00e1v\u00e1 v\u0161echna data na jednom LUN: v\u0161ichni se sna\u017e\u00ed m\u00edt alespo\u0148 osm, nebo \u010dty\u0159icet, a pokud mo\u017eno je\u0161t\u011b v\u00edce. To je z\u0159ejm\u00fd a spr\u00e1vn\u00fd p\u0159\u00edstup, se kter\u00fdm se ztoto\u017e\u0148ujeme. Ale pokud va\u0161e \u00faloha vy\u017eaduje pouze jeden LUN, kter\u00fd se snadn\u011bji spravuje, na\u0161e architektonick\u00e1 \u0159e\u0161en\u00ed umo\u017e\u0148uj\u00ed dos\u00e1hnout na n\u011bm v\u00fdkonu 80 % z dostupn\u00e9ho p\u0159i pou\u017eit\u00ed v\u00edce LUN.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/f37737185e2058af5af30f79771ba6c8.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Dynamick\u00e9 pl\u00e1nov\u00e1n\u00ed zat\u00ed\u017een\u00ed procesor\u016f<\/h2>\n<p>\nRozd\u011blen\u00ed z\u00e1t\u011b\u017ee na procesory p\u0159i pou\u017eit\u00ed jednoho LUN je u n\u00e1s realizov\u00e1no n\u00e1sledovn\u011b: \u00fakoly jsou ji\u017e na \u00farovni LUN rozd\u011bleny na jednotliv\u00e9 mal\u00e9 'shardy', ka\u017ed\u00fd z nich je pevn\u011b p\u0159i\u0159azen konkr\u00e9tn\u00edmu \u0159adi\u010di v 'motoru'. To je provedeno tak, aby syst\u00e9m neztr\u00e1cel v\u00fdkon, zat\u00edmco 'sko\u010d\u00ed' s t\u00edmto kusem dat mezi r\u016fzn\u00fdmi \u0159adi\u010di. <\/p>\n<p>Dal\u0161\u00edm mechanismem k zachov\u00e1n\u00ed vysok\u00e9ho v\u00fdkonu je dynamick\u00e9 pl\u00e1nov\u00e1n\u00ed, p\u0159i kter\u00e9m mohou b\u00fdt jednotliv\u00e1 procesorov\u00e1 j\u00e1dra p\u0159id\u011blov\u00e1na r\u016fzn\u00fdm sad\u00e1m \u00faloh. Nap\u0159\u00edklad pokud syst\u00e9m pr\u00e1v\u011b nepracuje na deduplikaci a kompresi, \u010d\u00e1st jader se m\u016f\u017ee zapojit do procesu obsluhy vstup\u016f a v\u00fdstup\u016f. Nebo naopak. To v\u0161e se prov\u00e1d\u00ed automaticky a u\u017eivateli je to transparentn\u00ed. <\/p>\n<p>Informace o aktu\u00e1ln\u00edm zat\u00ed\u017een\u00ed ka\u017ed\u00e9ho z jader Dorado V6 nejsou zobrazeny v grafick\u00e9m rozhran\u00ed, ale p\u0159es p\u0159\u00edkazov\u00fd \u0159\u00e1dek se lze obr\u00e1tit na OS \u0159adi\u010de a vyu\u017e\u00edt b\u011b\u017en\u00e9ho linuxov\u00e9ho p\u0159\u00edkazu. <i>top<\/i>.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/5d6a8323e011f072c3208fdff6dc9bf3.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Podpora NVMe a RoCE<\/h2>\n<p>\nJak ji\u017e bylo zm\u00edn\u011bno, v sou\u010dasn\u00e9 dob\u011b Dorado V6 pln\u011b podporuje NVMe over Fibre Channel \u201eout of the box\u201c a nevy\u017eaduje \u017e\u00e1dn\u00e9 licence. V polovin\u011b roku bude k dispozici podpora re\u017eimu NVMe over Ethernet. Pro jeho plnohodnotn\u00e9 vyu\u017eit\u00ed je zapot\u0159eb\u00ed podpora Ethernet s p\u0159\u00edm\u00fdm p\u0159\u00edstupem do pam\u011bti (DMA) verze v2.0 jak z pohledu samotn\u00e9ho storage syst\u00e9mu, tak z pohledu p\u0159ep\u00edna\u010d\u016f a s\u00ed\u0165ov\u00fdch adapt\u00e9r\u016f. Nap\u0159\u00edklad takov\u00fdch, jako jsou Mellanox ConnectX-4 nebo ConnectX-5. Lze tak\u00e9 vyu\u017e\u00edt s\u00ed\u0165ov\u00e9 karty s na\u0161imi \u010dipy. Podpora RoCE by m\u011bla b\u00fdt realizov\u00e1na na \u00farovni opera\u010dn\u00edho syst\u00e9mu.<\/p>\n<blockquote><p>Celkov\u011b pova\u017eujeme Dorado V6 za syst\u00e9m orientovan\u00fd na NVMe. I p\u0159es existuj\u00edc\u00ed podporu Fibre Channel a iSCSI pl\u00e1nujeme v budoucnu p\u0159echod na vysokorychlostn\u00ed Ethernet s RDMA.<\/p><\/blockquote>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/af643f09725ff4aa36fe4650dd9186b9.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>\u0160petka marketingu<\/h2>\n<p>\nD\u00edky tomu, \u017ee syst\u00e9m Dorado V6 m\u00e1 vysokou odolnost v\u016f\u010di poruch\u00e1m, dob\u0159e se horizont\u00e1ln\u011b \u0161k\u00e1lovatel a podporuje r\u016fzn\u00e9 migra\u010dn\u00ed technologie atd., ekonomick\u00fd efekt z jeho po\u0159\u00edzen\u00ed se projevuje se zah\u00e1jen\u00edm intenzivn\u00edho provozu storage syst\u00e9mu. Budeme se i nad\u00e1le sna\u017eit u\u010dinit vlastnictv\u00ed syst\u00e9mu co nejv\u00fdhodn\u011bj\u0161\u00edm, i kdy\u017e to v prvn\u00ed f\u00e1zi nen\u00ed na prvn\u00ed pohled z\u0159ejm\u00e9.<\/p>\n<p>Konkr\u00e9tn\u011b jsme vytvo\u0159ili program FLASH EVER, kter\u00fd je spojen s prodlou\u017een\u00edm \u017eivotn\u00edho cyklu storage syst\u00e9mu a zam\u011b\u0159en na to, abychom co nejv\u00edce uleh\u010dili z\u00e1kazn\u00edkovi p\u0159i prov\u00e1d\u011bn\u00ed upgrade.<\/p>\n<p><img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/816da462a6ddefca4e40ecc3dc73cab5.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTento program zahrnuje \u0159adu opat\u0159en\u00ed:<\/p>\n<ul>\n<li>mo\u017enost postupn\u00e9 v\u00fdm\u011bny \u0159adi\u010d\u016f a polic s disky za nov\u00e9 verze bez celkov\u00e9 v\u00fdm\u011bny za\u0159\u00edzen\u00ed (pro syst\u00e9my Dorado V6 t\u0159\u00eddy hi-end);<\/li>\n<li>mo\u017enost federativn\u00edho \u00falo\u017ei\u0161t\u011b (kombinace r\u016fzn\u00fdch verz\u00ed Dorado v r\u00e1mci jednoho hybridn\u00edho clusteru storage syst\u00e9mu);<\/li>\n<li>inteligentn\u00ed virtualizace (mo\u017enost vyu\u017eit\u00ed za\u0159\u00edzen\u00ed t\u0159et\u00edch stran jako sou\u010d\u00e1st \u0159e\u0161en\u00ed Dorado).<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Pro\u010d je OceanStor Dorado V6 nejrychlej\u0161\u00ed a nejspolehliv\u011bj\u0161\u00ed S\u0158D\" src=\"\/wp-content\/uploads\/2020\/04\/1071240678d16f4b941826eecabd67be.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa z\u00e1v\u011br je t\u0159eba poznamenat, \u017ee slo\u017eit\u00e1 situace ve sv\u011bt\u011b m\u00e1 jen slab\u00fd dopad na obchodn\u00ed perspektivy nov\u00e9ho syst\u00e9mu. P\u0159esto\u017ee ofici\u00e1ln\u00ed vyd\u00e1n\u00ed Dorado V6 prob\u011bhlo teprve v lednu, vid\u00edme v\u00fdrazn\u00fd z\u00e1jem o n\u011bj v \u010c\u00edn\u011b, stejn\u011b jako velk\u00fd z\u00e1jem ze strany rusk\u00fdch a mezin\u00e1rodn\u00edch partner\u016f z oblasti financ\u00ed a vl\u00e1dn\u00edch struktur.<\/p>\n<p>Krom\u011b jin\u00e9ho, vzhledem k pandemii, bez ohledu na to, jak dlouho bude trvat, se zvl\u00e1\u0161\u0165 nal\u00e9hav\u011b \u0159e\u0161\u00ed ot\u00e1zka zaji\u0161t\u011bn\u00ed virtu\u00e1ln\u00edch pracovn\u00edch ploch pro vzd\u00e1len\u00e9 zam\u011bstnance. V tomto procesu by tak\u00e9 mohl Dorado V6 vy\u0159e\u0161it mnoho probl\u00e9m\u016f. Proto vynakl\u00e1d\u00e1me ve\u0161ker\u00e9 \u00fasil\u00ed, v\u010detn\u011b t\u00e9m\u011b\u0159 uzav\u0159en\u00fdch dohod o za\u0159azen\u00ed nov\u00e9ho syst\u00e9mu do seznamu kompatibility VMware.<\/p>\n<h2>***<\/h2>\n<p>\nMimochodem, nezapom\u00ednejte na na\u0161e po\u010detn\u00e9 webin\u00e1\u0159e, kter\u00e9 se konaj\u00ed nejen v rusky mluv\u00edc\u00ed oblasti, ale i na glob\u00e1ln\u00ed \u00farovni. Seznam webin\u00e1\u0159\u016f na duben je k dispozici na <noindex><a rel=\"nofollow\" href=\"https:\/\/e.huawei.com\/ru\/special_topic\/event\/2020q1\/ru-webinar-schedule-2020\">odkazu<\/a><\/noindex>.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/huawei\/blog\/499502\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u043d\u0435 \u0441\u043f\u0435\u0448\u0438\u0442\u0435 \u0441 \u0432\u044b\u0432\u043e\u0434\u0430\u043c\u0438 \u0438\u0437-\u0437\u0430 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430! \u0423 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u0443\u0432\u0435\u0441\u0438\u0441\u0442\u044b\u0435 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u044b \u0432 \u0435\u0433\u043e \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435, \u0438 \u043c\u044b \u0443\u043f\u0430\u043a\u043e\u0432\u0430\u043b\u0438 \u0438\u0445, \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u043e\u0433\u043b\u0438 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e. \u041f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c \u0432\u0430\u0448\u0435\u043c\u0443 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044e \u043f\u043e\u0441\u0442 \u043e \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0438 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0430\u0445 \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0430\u0448\u0435\u0439 \u043d\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0432 \u044f\u043d\u0432\u0430\u0440\u0435 2020 \u0433\u043e\u0434\u0430. \u041f\u043e \u043d\u0430\u0448\u0435\u043c\u0443 \u0443\u0431\u0435\u0436\u0434\u0435\u043d\u0438\u044e, \u0433\u043b\u0430\u0432\u043d\u043e\u0435 \u043a\u043e\u043d\u043a\u0443\u0440\u0435\u043d\u0442\u043d\u043e\u0435 \u043f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0443 \u0421\u0425\u0414 Dorado V6 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0442 \u0438\u043c\u0435\u043d\u043d\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":79692,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-79691","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=\"\u041f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u043d\u0435 \u0441\u043f\u0435\u0448\u0438\u0442\u0435 \u0441 \u0432\u044b\u0432\u043e\u0434\u0430\u043c\u0438 \u0438\u0437-\u0437\u0430 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430! 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