{"id":31230,"date":"2019-10-31T21:40:10","date_gmt":"2019-10-31T18:40:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/rekomendatsii-po-nastrojke-afa-accelstor-pri-rabote-s-vmware-vsphere\/"},"modified":"2019-10-31T21:40:10","modified_gmt":"2019-10-31T18:40:10","slug":"rekomendatsii-po-nastrojke-afa-accelstor-pri-rabote-s-vmware-vsphere","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/rekomendatsii-po-nastrojke-afa-accelstor-pri-rabote-s-vmware-vsphere","title":{"rendered":"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V r\u00e1mci tohto \u010dl\u00e1nku by sme chceli prerozpr\u00e1va\u0165 o vlastnostiach fungovania All Flash pol\u00ed AccelStor s jednou z najpopul\u00e1rnej\u0161\u00edch virtualiza\u010dn\u00fdch platforiem \u2013 VMware vSphere. Konkr\u00e9tne sa zameriame na parametre, ktor\u00e9 pom\u00f4\u017eu dosiahnu\u0165 maxim\u00e1lny efekt z pou\u017e\u00edvania tak\u00e9ho v\u00fdkonn\u00e9ho n\u00e1stroja, ako je All Flash. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/177f44f7e1c5f30c8c072af86b4f9999.jpg\" style=\"display:block;margin: 0 auto;\" \/><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>All Flash polia AccelStor NeoSapphire\u2122 s\u00fa <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/professional-models\">jedno<\/a><\/noindex> alebo <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/modeli-vysokoj-dostupnosti-ha\">dvojn\u00f3dov\u00e9<\/a><\/noindex> zariadenia zalo\u017een\u00e9 na SSD \u00falo\u017eisk\u00e1ch s principi\u00e1lne in\u00fdm pr\u00edstupom k realiz\u00e1cii konceptu ukladania d\u00e1t a organiz\u00e1cii pr\u00edstupu k nim pomocou vlastnej technol\u00f3gie <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap\u00ae<\/a><\/noindex> namiesto ve\u013emi popul\u00e1rnych algoritmov RAID. Polia poskytuj\u00fa blokov\u00fd pr\u00edstup pre hostite\u013eov cez rozhrania Fibre Channel alebo iSCSI. Je potrebn\u00e9 objasni\u0165, \u017ee modely s ISCSI rozhran\u00edm maj\u00fa aj s\u00faborov\u00fd pr\u00edstup ako pr\u00edjemn\u00fd bonus. Ale v r\u00e1mci tohto \u010dl\u00e1nku sa zameriame na pou\u017eitie blokov\u00fdch protokolov ako najv\u00fdkonnej\u0161\u00edch pre All Flash.<\/p>\n<p><\/p>\n<p>Cel\u00fd proces nasadenia a n\u00e1sledn\u00e9ho nastavenia spolupr\u00e1ce po\u013ea AccelStor a virtualiza\u010dn\u00e9ho syst\u00e9mu VMware vSphere mo\u017eno rozdeli\u0165 na nieko\u013eko krokov:<\/p>\n<p><\/p>\n<ul>\n<li>Realiz\u00e1cia topol\u00f3gie pripojenia a nastavenie SAN siete;<\/li>\n<li>Nastavenie All Flash po\u013ea;<\/li>\n<li>Nastavenie hostite\u013eov ESXi;<\/li>\n<li>Nastavenie virtu\u00e1lnych strojov.<\/li>\n<\/ul>\n<p><\/p>\n<p>Na ilustra\u010dn\u00e9 \u00fa\u010dely boli pou\u017eit\u00e9 polia AccelStor NeoSapphire\u2122 s rozhran\u00edm Fibre Channel a s rozhran\u00edm iSCSI. Z\u00e1kladn\u00fdm softv\u00e9rom bolo VMware vSphere 6.7U1.<\/p>\n<p><\/p>\n<p>Pred nasaden\u00edm v \u010dl\u00e1nku pop\u00edsan\u00fdch syst\u00e9mov sa d\u00f4razne odpor\u00fa\u010da obozn\u00e1mi\u0165 sa s dokument\u00e1ciou od VMware t\u00fdkaj\u00facou sa ot\u00e1zok v\u00fdkonu (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.vmware.com\/content\/dam\/digitalmarketing\/vmware\/en\/pdf\/techpaper\/performance\/vsphere-esxi-vcenter-server-67-performance-best-practices.pdf\">Performance Best Practices for VMware vSphere 6.7<\/a><\/noindex> ) a nastaven\u00ed iSCSI (<noindex>Best Practices For Running VMware vSphere On iSCSI<\/noindex>)<\/p>\n<p><\/p>\n<h3><i><b>Topol\u00f3gia pripojenia a nastavenie SAN siete<\/b><\/i><\/h3>\n<p><\/p>\n<p>Hlavn\u00fdmi komponentmi SAN siete s\u00fa HBA adapt\u00e9ry v hostite\u013eoch ESXi, SAN prep\u00edna\u010de a nody po\u013ea. Typick\u00e1 topol\u00f3gia tejto siete by mala vyzera\u0165 takto:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/0fa8f428d3120b551747e21d43d9095d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Pod term\u00ednom Switch sa tu rozumie ako samostatn\u00fd fyzick\u00fd prep\u00edna\u010d alebo s\u00fabor prep\u00edna\u010dov (Fabric), tak aj zdie\u013ean\u00e9 zariadenie medzi r\u00f4znymi slu\u017ebami (VSAN v pr\u00edpade Fibre Channel a VLAN v pr\u00edpade iSCSI). Pou\u017eitie dvoch nez\u00e1visl\u00fdch prep\u00edna\u010dov\/Fabric umo\u017en\u00ed vyl\u00fa\u010di\u0165 mo\u017en\u00fa jedin\u00fa bod poruchy.<\/p>\n<p><\/p>\n<p>Pripojenie hostite\u013eov priamo k poli, aj ke\u010f je podporovan\u00e9, sa ve\u013emi neodpor\u00fa\u010da. V\u00fdkon All Flash pol\u00ed je dostato\u010dne vysok\u00fd. A na dosiahnutie maxim\u00e1lnej r\u00fdchlosti je potrebn\u00e9 vyu\u017ei\u0165 v\u0161etky porty po\u013ea. Preto je pr\u00edtomnos\u0165 aspo\u0148 jedn\u00e9ho prep\u00edna\u010da medzi hostite\u013emi a NeoSapphire\u2122 nevyhnutn\u00e1.<\/p>\n<p><\/p>\n<p>P\u0159\u00edtomnost dvou port\u016f na HBA hostitele je tak\u00e9 povinn\u00fdm po\u017eadavkem pro dosa\u017een\u00ed maxim\u00e1ln\u00ed v\u00fdkonnosti a zaji\u0161t\u011bn\u00ed odolnosti v\u016f\u010di poruch\u00e1m.<\/p>\n<p><\/p>\n<p>V p\u0159\u00edpad\u011b pou\u017eit\u00ed rozhran\u00ed Fibre Channel je t\u0159eba nastavit z\u00f3nov\u00e1n\u00ed, aby se vylou\u010dily mo\u017en\u00e9 kolize mezi inici\u00e1tory a c\u00edli. Z\u00f3ny se buduj\u00ed na principu \"jeden port inici\u00e1tora \u2013 jeden nebo v\u00edce port\u016f pole\".<\/p>\n<p><\/p>\n<p>Pokud sa v\u0161ak pou\u017e\u00edva pripojenie cez iSCSI a zdie\u013ean\u00fd prep\u00edna\u010d s in\u00fdmi slu\u017ebami, je nevyhnutn\u00e9 izolova\u0165 iSCSI prev\u00e1dzku v r\u00e1mci samostatn\u00e9ho VLAN. Taktie\u017e sa ve\u013emi odpor\u00fa\u010da zapn\u00fa\u0165 podporu Jumbo Frames (MTU = 9000) na zv\u00fd\u0161enie ve\u013ekosti paketov v sieti a t\u00fdm zn\u00ed\u017eenie mno\u017estva ovl\u00e1dac\u00edch inform\u00e1ci\u00ed pri prenose. Je v\u0161ak potrebn\u00e9 si uvedomi\u0165, \u017ee na spr\u00e1vnu funk\u010dnos\u0165 je potrebn\u00e9 zmeni\u0165 parameter MTU na v\u0161etk\u00fdch komponentoch siete v re\u0165azci \"inici\u00e1tor-prep\u00edna\u010d-cie\u013e\".<\/p>\n<p><\/p>\n<h3><i><b>Nastavenie All Flash po\u013ea<\/b><\/i><\/h3>\n<p><\/p>\n<p>Pole je dod\u00e1van\u00e9 z\u00e1kazn\u00edkom s u\u017e vytvoren\u00fdmi skupinami <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap\u00ae<\/a><\/noindex>. Preto nie s\u00fa potrebn\u00e9 \u017eiadne kroky na zl\u00fa\u010denie \u00falo\u017en\u00fdch zariaden\u00ed do jednej \u0161trukt\u00fary. Sta\u010d\u00ed len vytvori\u0165 objemy po\u017eadovanej ve\u013ekosti a v po\u017eadovanom mno\u017estve.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/zn\/x9\/nc\/znx9ncuyd2rgm8-jfvwf620zaqg.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/d09f9847203773280bc605be1c8fbc67.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/wx\/8l\/ua\/wx8lualewtdkixfwg0petpxbsre.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/ddcdaeb16263f79536db68f9c6ae2cff.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Pre pohodlie je k dispoz\u00edcii funkcia hromadn\u00e9ho vytv\u00e1rania viacer\u00fdch objemov ur\u010denej ve\u013ekosti. Predvolene sa vytv\u00e1raj\u00fa \"tenk\u00e9\" objemy, preto\u017ee to umo\u017e\u0148uje efekt\u00edvnej\u0161ie vyu\u017e\u00edva\u0165 dostupn\u00fd \u00falo\u017en\u00fd priestor (vr\u00e1tane podpory Space Reclamation). Z h\u013eadiska v\u00fdkonu rozdiel medzi \"tenk\u00fdmi\" a \"hrub\u00fdmi\" objemami nepresahuje 1%. Av\u0161ak ak je potrebn\u00e9 \"vytiahnu\u0165 v\u0161etko z po\u013ea\", v\u017edy je mo\u017en\u00e9 skonvertova\u0165 ak\u00fdko\u013evek \"tenk\u00fd\" objem na \"hrub\u00fd\". Ale treba ma\u0165 na pam\u00e4ti, \u017ee tak\u00e1to oper\u00e1cia je nezvratn\u00e1.<\/p>\n<p><\/p>\n<p>Potom zost\u00e1va \u201epublikova\u0165\u201c vytvoren\u00e9 zv\u00e4zky a nastavi\u0165 pr\u00edstupov\u00e9 pr\u00e1va k nim zo strany hostite\u013eov pomocou ACL (IP adresy pre iSCSI a WWPN pre FC) a fyzick\u00e9ho rozdelenia pod\u013ea portov po\u013ea. Pre modely iSCSI sa to rob\u00ed vytvoren\u00edm Target.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/mw\/8y\/cg\/mw8ycgqngghoyuelortgysofswi.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/942d7ec437ad802ef828afa91bcde1f8.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/py\/xe\/28\/pyxe28gnrsxh_cx4ltjleogwsmw.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/f92d329b691d7b17380974253c8572ce.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Pre modely FC publik\u00e1cia prebieha vytvoren\u00edm LUN pre ka\u017ed\u00fd port po\u013ea.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/qh\/u3\/bx\/qhu3bxhm-kqinygguz298izbw7e.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/554aef268d6b18069edd3531b2429db5.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/oh\/al\/ey\/ohaleyllpb-0bmot9kawc4-ssyg.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/a770a4d3e6090c5bfaab3dad5487ee5a.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Na ur\u00fdchlenie procesu nastavenia je mo\u017en\u00e9 hostite\u013eov zdru\u017eova\u0165 do skup\u00edn. Ak sa na hostite\u013eovi pou\u017e\u00edva viacportov\u00e1 FC HBA (\u010do je v praxi naj\u010dastej\u0161ie), syst\u00e9m automaticky rozpozn\u00e1, \u017ee porty takejto HBA patria k jedin\u00e9mu hostite\u013eovi v\u010faka WWPN, ktor\u00e9 sa l\u00ed\u0161ia o jednotku. Pre obidva rozhrania sa tie\u017e podporuje hromadn\u00e9 vytv\u00e1ranie Target\/LUN.<\/p>\n<p><\/p>\n<p>D\u00f4le\u017eitou pozn\u00e1mkou v pr\u00edpade pou\u017eitia iSCSI rozhrania je vytvorenie pre zv\u00e4zky nieko\u013ek\u00fdch cie\u013eov s\u00fa\u010dasne kv\u00f4li zv\u00fd\u0161eniu v\u00fdkonu, preto\u017ee frontu na cie\u013eovej adrese nie je mo\u017en\u00e9 zmeni\u0165, a v skuto\u010dnosti bude \u00fazkym miestom.<\/p>\n<p><\/p>\n<p><b><i><\/p>\n<h3>Nastavenie hostite\u013eov ESXi<\/h3>\n<p><\/i><\/b><\/p>\n<p><\/p>\n<p>Z poh\u013eadu hostite\u013eov ESXi sa z\u00e1kladn\u00e9 nastavenie vykon\u00e1va pod\u013ea celkom o\u010dak\u00e1van\u00e9ho scen\u00e1ra. Postup pre iSCSI pripojenie:<\/p>\n<p><\/p>\n<ol>\n<li>Pridanie Softv\u00e9rov\u00e9ho iSCSI adapt\u00e9ra (nie je potrebn\u00e9, ak u\u017e bol pridan\u00fd, alebo v pr\u00edpade pou\u017eitia Hardv\u00e9rov\u00e9ho iSCSI adapt\u00e9ra);<\/li>\n<li>Vytvorenie vSwitch, cez ktor\u00fd bude prech\u00e1dza\u0165 iSCSI prenos, a pridanie fyzick\u00fdch uplink a VMkernal;<\/li>\n<li>Pridanie adries po\u013ea do Dynamic Discovery;<\/li>\n<li>Vytvorenie Datastore<\/li>\n<\/ol>\n<p><\/p>\n<p><b>Niektor\u00e9 d\u00f4le\u017eit\u00e9 pozn\u00e1mky:<\/b><\/p>\n<p><\/p>\n<blockquote>\n<ul>\n<li>Vo v\u0161eobecnosti je mo\u017en\u00e9 pou\u017ei\u0165 aj existuj\u00faci vSwitch, ale v pr\u00edpade samostatn\u00e9ho vSwitch bude spr\u00e1va nastaven\u00ed hostite\u013ea v\u00fdrazne jednoduch\u0161ia.<\/li>\n<li>Je potrebn\u00e9 rozde\u013eova\u0165 Management prenos a iSCSI po oddelen\u00fdch fyzick\u00fdch link\u00e1ch a\/alebo VLAN, aby sa predi\u0161lo probl\u00e9mom s v\u00fdkonom.<\/li>\n<li>IP adresy VMkernal a pr\u00edslu\u0161n\u00fdch portov All Flash po\u013ea musia by\u0165 v r\u00e1mci jednej podsiete op\u00e4\u0165 z d\u00f4vodu ot\u00e1zok v\u00fdkonu.<\/li>\n<li>Na zabezpe\u010denie odolnosti proti poruch\u00e1m pod\u013ea pravidiel VMware mus\u00ed ma\u0165 vSwitch aspo\u0148 dva fyzick\u00e9 uplink.<\/li>\n<li>Ak sa pou\u017e\u00edvaj\u00fa Jumbo Frames, je potrebn\u00e9 zmeni\u0165 MTU ako na vSwitch, tak aj na VMkernal.<\/li>\n<li>Nebude zbyto\u010dn\u00e9 pripomen\u00fa\u0165, \u017ee pod\u013ea odpor\u00fa\u010dan\u00ed VMware je pre fyzick\u00e9 adapt\u00e9ry, ktor\u00e9 bud\u00fa pou\u017e\u00edvan\u00e9 na pr\u00e1cu s iSCSI trafikom, nevyhnutn\u00e9 nastavi\u0165 Teaming and Failover. Konkr\u00e9tne, ka\u017ed\u00fd VMkernal by mal pracova\u0165 len cez jeden uplink, druh\u00fd uplink je potrebn\u00e9 nastavi\u0165 do re\u017eimu unused. Pre zabezpe\u010denie vysokodostupnosti je potrebn\u00e9 prida\u0165 dva VMkernal, z ktor\u00fdch ka\u017ed\u00fd bude pracova\u0165 cez svoj uplink.<\/li>\n<\/ul>\n<p>\n<\/p><\/blockquote>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/_h\/jb\/va\/_hjbvatnuhjwts4duy2epgb7bbi.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/b769fa87aa8552ed6dd775f9f9dcb1b5.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>VMkernel Adapter (vmk#)<br \/>\nFyzick\u00fd sie\u0165ov\u00fd adapt\u00e9r (vmnic#)<\/p>\n<p>vmk1 (Storage01)<br \/>\nAkt\u00edvne adapt\u00e9ry<br \/>\nvmnic2<br \/>\nNepou\u017eit\u00e9 adapt\u00e9ry<br \/>\nvmnic3<\/p>\n<p>vmk2 (Storage02)<br \/>\nAkt\u00edvne adapt\u00e9ry<br \/>\nvmnic3<br \/>\nNepou\u017eit\u00e9 adapt\u00e9ry<br \/>\nvmnic2<\/p>\n<p>Pre pripojenie cez Fibre Channel nie s\u00fa potrebn\u00e9 \u017eiadne predch\u00e1dzaj\u00face kroky. M\u00f4\u017eete okam\u017eite vytvori\u0165 Datastore.<\/p>\n<p><\/p>\n<p>Po vytvoren\u00ed Datastore je potrebn\u00e9 sa uisti\u0165, \u017ee sa pou\u017e\u00edva politika Round Robin pre cesty k Target\/LUN ako najv\u00fdkonnej\u0161ia.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/zh\/zr\/t1\/zhzrt15baoc1qlp0w6ds-mys3hu.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/621474aa13123cd44518b263f222e6b5.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Predvolen\u00e9 nastavenia VMware predpokladaj\u00fa pou\u017e\u00edvanie tejto politiky pod\u013ea sch\u00e9my: 1000 po\u017eiadaviek cez prv\u00fa cestu, \u010fal\u0161\u00edch 1000 po\u017eiadaviek cez druh\u00fa cestu at\u010f. Tak\u00e9to interakcie hostite\u013ea s dvojkontrol\u00e9rov\u00fdm \u00falo\u017eiskom bud\u00fa nevyv\u00e1\u017een\u00e9. Preto odpor\u00fa\u010dame nastavi\u0165 parameter Round Robin policy = 1 cez Esxcli\/PowerCLI.<\/p>\n<p>\n<b class=\"spoiler_title\">Parametre<\/b><\/p>\n<p>Pre Esxcli:<\/p>\n<p><\/p>\n<ul>\n<li>Zobrazi\u0165 dostupn\u00e9 LUN<\/li>\n<\/ul>\n<p><\/p>\n<p><b>esxcli storage nmp device list<\/b><\/p>\n<p><\/p>\n<ul>\n<li>Skop\u00edrova\u0165 n\u00e1zov zariadenia<\/li>\n<li>Zmeni\u0165 Round Robin Policy<\/li>\n<\/ul>\n<p><\/p>\n<p><b>esxcli storage nmp psp roundrobin deviceconfig set --type=iops --iops=1 --device=\"Device_ID\"<\/b><\/p>\n<p><\/p>\n<p>V\u00e4\u010d\u0161ina modern\u00fdch aplik\u00e1ci\u00ed je navrhnut\u00e1 na v\u00fdmenu paketov ve\u013ek\u00fdch d\u00e1t s cie\u013eom maximalizova\u0165 vyu\u017eitie priepustnosti a zn\u00ed\u017ei\u0165 z\u00e1\u0165a\u017e na centr\u00e1lny procesor. Preto ESXi predvolene pren\u00e1\u0161a po\u017eiadavky vstupu\/v\u00fdstupu na \u00falo\u017en\u00e9 zariadenie po \u010dastiach a\u017e do 32767KB. Av\u0161ak pre niektor\u00e9 scen\u00e1re bude v\u00fdmena men\u0161\u00edmi \u010das\u0165ami v\u00fdkonnej\u0161ia. V s\u00favislosti s modelmi AccelStor s\u00fa to nasleduj\u00face scen\u00e1re:<\/p>\n<p><\/p>\n<ul>\n<li>Virtu\u00e1lny stroj pou\u017e\u00edva UEFI namiesto Legacy BIOS<\/li>\n<li>Pou\u017e\u00edva sa vSphere Replication<\/li>\n<\/ul>\n<p><\/p>\n<p>Pre tak\u00e9to scen\u00e1re sa odpor\u00fa\u010da zmeni\u0165 hodnotu parametra Disk.DiskMaxIOSize na 4096.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/1g\/et\/3g\/1get3g8odkem1onrpkwjdilbnsi.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/f7072bb572580d9bd6077afab8c272ba.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Pre iSCSI pripojenia sa odpor\u00fa\u010da nastavi\u0165 parameter Login Timeout na 30 (predvolene 5) na zv\u00fd\u0161enie stability pripojenia a vypn\u00fa\u0165 oneskorenie potvrden\u00ed posielan\u00fdch paketov DelayedAck. Obe mo\u017enosti sa nach\u00e1dzaj\u00fa vo vSphere Client: Host \u2192 Configure \u2192 Storage \u2192 Storage Adapters \u2192 Advanced Options pre iSCSI adapt\u00e9r.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/1y\/5_\/c8\/1y5_c80zsijgqtngo-9vt2zbbo8.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/e9700594d0074b5439dbb397c081dd48.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/bh\/yi\/tv\/bhyitvuujofnioaunwhzypx3fe0.png\"><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/c2dd6f3aaa6c0648763f66a94af2c251.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>Dostato\u010dne tenk\u00fdm momentom je po\u010det pou\u017e\u00edvan\u00fdch zv\u00e4zkov pre datastore. Je jasn\u00e9, \u017ee pre jednoduch\u00e9 riadenie vznik\u00e1 t\u00fa\u017eba vytvori\u0165 jeden ve\u013ek\u00fd zv\u00e4zok na cel\u00fd objem po\u013ea. Av\u0161ak existencie viacer\u00fdch zv\u00e4zkov a, v s\u00falade s t\u00fdm, datastore m\u00e1 priazniv\u00fd vplyv na celkov\u00fd v\u00fdkon (viac o front\u00e1ch ni\u017e\u0161ie v texte). Preto odpor\u00fa\u010dame vytvorenie aspo\u0148 dvoch zv\u00e4zkov.<\/p>\n<p><\/p>\n<p>E\u0161te relat\u00edvne ned\u00e1vno VMware odpor\u00fa\u010dala obmedzi\u0165 po\u010det virtu\u00e1lnych strojov na jednom datastore op\u00e4\u0165 s cie\u013eom dosiahnu\u0165 maxim\u00e1lny mo\u017en\u00fd v\u00fdkon. Av\u0161ak dnes, zvl\u00e1\u0161\u0165 s roz\u0161\u00edren\u00edm VDI, tento probl\u00e9m u\u017e nie je tak ak\u00fatny. To v\u0161ak neodstra\u0148uje d\u00e1vne pravidlo \u2014 rozde\u013eova\u0165 virtu\u00e1lne stroje, ktor\u00e9 vy\u017eaduj\u00fa intenz\u00edvny IO, po r\u00f4znych datastore. Pre ur\u010denie optim\u00e1lneho po\u010dtu virtu\u00e1lnych strojov na jeden zv\u00e4zok nie je ni\u010d lep\u0161ie, ako vykona\u0165 <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/zaprosit-demo\">z\u00e1\u0165a\u017eov\u00e9 testovanie All Flash po\u013ea AccelStor <\/a><\/noindex>v r\u00e1mci svojej infra\u0161trukt\u00fary.<\/p>\n<p><\/p>\n<h3><i><b>Nastavenie virtu\u00e1lnych strojov<\/b><\/i><\/h3>\n<p><\/p>\n<p>Pri nastavovan\u00ed virtu\u00e1lnych strojov nie s\u00fa \u017eiadne osobitn\u00e9 po\u017eiadavky, presnej\u0161ie s\u00fa celkom be\u017en\u00e9:<\/p>\n<p><\/p>\n<ul>\n<li>Pou\u017eitie maxim\u00e1lne mo\u017enej verzie VM (kompatibilita)<\/li>\n<li>Opatrne nastavi\u0165 ve\u013ekos\u0165 RAM pri tesnom umiestnen\u00ed virtu\u00e1lnych strojov, napr\u00edklad v VDI (ke\u010f\u017ee pri \u0161tarte sa vytv\u00e1ra s\u00fabor na swapovanie rovnate\u013en\u00e9ho s ve\u013ekos\u0165ou RAM, \u010do spotrebov\u00e1va u\u017eito\u010dn\u00fa kapacitu a ovplyv\u0148uje kone\u010dn\u00fd v\u00fdkon)<\/li>\n<li>Pou\u017ei\u0165 najv\u00fdkonnej\u0161ie z h\u013eadiska IO verzie adapt\u00e9r\u016f: sie\u0165ov\u00e9 typu VMXNET 3 a SCSI typu PVSCSI<\/li>\n<li>Pou\u017ei\u0165 typ disku Thick Provision Eager Zeroed pre maxim\u00e1lny v\u00fdkon a Thin Provisioning pre maxim\u00e1lne efekt\u00edvne vyu\u017eitie \u00falo\u017en\u00e9ho priestoru<\/li>\n<li>Pok\u00fasi\u0165 sa obmedzi\u0165 \u010dinnos\u0165 strojov, ktor\u00e9 nie s\u00fa kritick\u00e9 na vstup\/v\u00fdstup pomocou Virtual Disk Limit<\/li>\n<li>Nezabudn\u00fa\u0165 nain\u0161talova\u0165 VMware Tools <\/li>\n<\/ul>\n<p><\/p>\n<h3><i><b>Pozn\u00e1mky o front\u00e1ch<\/b><\/i><\/h3>\n<p><\/p>\n<p>\u010cak\u00e1re\u0148 (alebo Outstanding I\/O) je po\u010det po\u017eiadaviek na vstup\/v\u00fdstup (SCSI pr\u00edkazov), ktor\u00e9 \u010dakaj\u00fa na spracovanie v ka\u017edom okamihu na konkr\u00e9tnom zariaden\u00ed\/aplik\u00e1cii. V pr\u00edpade pre\u0165a\u017eenia frontu sa vyd\u00e1vaj\u00fa chyby QFULL, \u010do sa nakoniec prejav\u00ed na n\u00e1raste latencie. Pri pou\u017eit\u00ed diskov\u00fdch (to\u010div\u00fdch) syst\u00e9mov na ukladanie \u00fadajov teoreticky plat\u00ed, \u017ee \u010d\u00edm vy\u0161\u0161\u00ed je front, t\u00fdm vy\u0161\u0161\u00ed je ich v\u00fdkon. Av\u0161ak nemali by ste to preh\u00e1\u0148a\u0165, preto\u017ee sa m\u00f4\u017eete \u013eahko stretn\u00fa\u0165 s QFULL. V pr\u00edpade syst\u00e9mov All Flash je to z jednej strany jednoduch\u0161ie: matice maj\u00fa oneskorenia r\u00e1dovo ni\u017e\u0161ie, a preto vo v\u00e4\u010d\u0161ine pr\u00edpadov nie je potrebn\u00e9 osobitne regulova\u0165 ve\u013ekos\u0165 frontov. Na druhej strane v niektor\u00fdch scen\u00e1roch (v\u00fdrazn\u00fd prebytok po\u017eiadaviek na IO pre konkr\u00e9tne virtu\u00e1lne stroje, testy na maxim\u00e1lny v\u00fdkon at\u010f.) je potrebn\u00e9 nielen zmeni\u0165 parametre frontov, ale aspo\u0148 pochopi\u0165, ak\u00fdch ukazovate\u013eov je mo\u017en\u00e9 dosiahnu\u0165 a, \u010do je najd\u00f4le\u017eitej\u0161ie, ak\u00fdmi sp\u00f4sobmi.<\/p>\n<p><\/p>\n<p>Na samotnej All Flash matici AccelStor neexistuj\u00fa \u017eiadne obmedzenia t\u00fdkaj\u00face sa zv\u00e4zkov alebo portov vstup\/v\u00fdstup. Pr\u00edpadne aj jedin\u00fd zv\u00e4zok m\u00f4\u017ee z\u00edska\u0165 v\u0161etky zdroje matice. Jedin\u00e9 obmedzenie na fronty sa nach\u00e1dza pri iSCSI cie\u013eoch. Pr\u00e1ve z tohto d\u00f4vodu sa vy\u0161\u0161ie uv\u00e1dzala potreba vytvori\u0165 nieko\u013eko (ide\u00e1lne a\u017e 8) cie\u013eov pre ka\u017ed\u00fd zv\u00e4zok na prekonanie tohto obmedzenia. Rovnako opakujeme, \u017ee matice AccelStor s\u00fa ve\u013emi v\u00fdkonn\u00e9 rie\u0161enia. Preto je potrebn\u00e9 vyu\u017ei\u0165 v\u0161etky rozhrania syst\u00e9mu na dosiahnutie maxim\u00e1lnej r\u00fdchlosti.<\/p>\n<p><\/p>\n<p>Z poh\u013eadu hostite\u013ea ESXi je situ\u00e1cia \u00faplne in\u00e1. Samotn\u00fd hostite\u013e aplikuje prax rovn\u00e9ho pr\u00edstupu k zdrojom pre v\u0161etk\u00fdch \u00fa\u010dastn\u00edkov. Preto existuj\u00fa samostatn\u00e9 fronty IO pre hos\u0165uj\u00faci opera\u010dn\u00fd syst\u00e9m a HBA. Fronty pre hos\u0165uj\u00faci opera\u010dn\u00fd syst\u00e9m sa kombinuj\u00fa z frontov na virtu\u00e1lny SCSI adapt\u00e9r a virtu\u00e1lny disk:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/e6033427e6f554490c9a6460574b7f6e.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Fronta k HBA z\u00e1vis\u00ed od konkr\u00e9tneho typu\/v\u00fdrobcu:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/a0b078e63bdf8f306a25bfecd1310cb0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Celkov\u00fd v\u00fdkon virtu\u00e1lneho stroja bude ur\u010den\u00fd najni\u017e\u0161ou hodnotou ukazovate\u013ea frontu (Queue Depth limit) medzi komponentmi hostite\u013ea. <\/p>\n<p><\/p>\n<p>V\u010faka t\u00fdmto hodnot\u00e1m je mo\u017en\u00e9 pos\u00fadi\u0165 v\u00fdkonnostn\u00e9 parametre, ktor\u00e9 m\u00f4\u017eeme dosiahnu\u0165 v r\u00f4znych konfigur\u00e1ci\u00e1ch. Napr\u00edklad, ak chceme zisti\u0165 teoretick\u00fa v\u00fdkonnos\u0165 virtu\u00e1lneho stroja (bez viazania na blok) pri latencii 0,5 ms. Potom jej IOPS = (1 000 \/ latencia) * Outstanding I \/ Os (limit h\u013abky frontu)<\/p>\n<p>\n<b class=\"spoiler_title\">Pr\u00edklady<\/b><\/p>\n<p><b>Pr\u00edklad 1<\/b><\/p>\n<p><\/p>\n<ul>\n<li>FC Emulex HBA adapt\u00e9r<\/li>\n<li>Jeden VM na datastore<\/li>\n<li>VMware Paravirtual SCSI adapt\u00e9r<\/li>\n<\/ul>\n<p><\/p>\n<p>Tu je limit h\u013abky frontu ur\u010den\u00fd Emulex HBA. Preto IOPS = (1000 \/ 0,5) * 32 = 64K<\/p>\n<p><\/p>\n<p><b>Pr\u00edklad 2<\/b><\/p>\n<p><\/p>\n<ul>\n<li>VMware iSCSI Softv\u00e9rov\u00fd adapt\u00e9r<\/li>\n<li>Jeden VM na datastore<\/li>\n<li>VMware Paravirtual SCSI adapt\u00e9r<\/li>\n<\/ul>\n<p><\/p>\n<p>Tu je limit h\u013abky frontu ur\u010den\u00fd u\u017e Paravirtual SCSI adapt\u00e9rom. Preto IOPS = (1000 \/ 0,5) * 64 = 128K<\/p>\n<p><\/p>\n<p>Najvy\u0161\u0161ie modely All Flash pol\u00ed AccelStor (napr\u00edklad, <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-p710\">P710<\/a><\/noindex>) s\u00fa schopn\u00e9 zabezpe\u010di\u0165 v\u00fdkonnos\u0165 700K IOPS pri z\u00e1pise pri bloku 4K. Pri tejto ve\u013ekosti bloku je \u00faplne zrejm\u00e9, \u017ee jedin\u00fd virtu\u00e1lny stroj nie je schopn\u00fd za\u0165a\u017ei\u0165 tak\u00e9 pole. Na to bude potrebn\u00fdch 11 (pre pr\u00edklad 1) alebo 6 (pre pr\u00edklad 2) virtu\u00e1lnych strojov.<\/p>\n<p><\/p>\n<p>Nakoniec, pri spr\u00e1vnom nastaven\u00ed v\u0161etk\u00fdch uveden\u00fdch komponentov virtu\u00e1lneho d\u00e1tov\u00e9ho centra je mo\u017en\u00e9 dosiahnu\u0165 ve\u013emi p\u00f4sobiv\u00e9 v\u00fdsledky z h\u013eadiska v\u00fdkonu.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Odpor\u00fa\u010dania na nastavenie AFA AccelStor pri pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/eee93cccf16539410695c6f79d94deda.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>4K n\u00e1hodn\u00e9, 70% \u010d\u00edtanie \/ 30% z\u00e1pis<\/i><\/p>\n<p><\/p>\n<p>V skuto\u010dnosti je skuto\u010dn\u00fd svet omnoho zlo\u017eitej\u0161\u00ed, ako ho pop\u00edsa\u0165 jednoduch\u00fdm vzorcom. Na jednom hostite\u013eovi je v\u017edy mno\u017estvo virtu\u00e1lnych strojov s r\u00f4znymi konfigur\u00e1ciami a po\u017eiadavkami na IO. A spracovanie vstupu \/ v\u00fdstupu zabezpe\u010duje procesor hostite\u013ea, ktor\u00e9ho v\u00fdkon nie je neobmedzen\u00fd. Tak, na to, aby sa odhalil pln\u00fd potenci\u00e1l toho ist\u00e9ho <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-p710\">modelu P710<\/a><\/noindex> v realite bude potrebn\u00fdch minim\u00e1lne tri hostitelia. Navy\u0161e aplik\u00e1cie, ktor\u00e9 be\u017eia vo virtu\u00e1lnych strojoch, prispievaj\u00fa svojimi korekciami. Preto na presn\u00e9 ur\u010denie ve\u013ekosti odpor\u00fa\u010dame <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/zaprosit-demo\">vyu\u017ei\u0165 testovanie modelov v praxi<\/a><\/noindex> All Flash pol\u00ed <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/\">AccelStor<\/a><\/noindex> v r\u00e1mci infra\u0161trukt\u00fary z\u00e1kazn\u00edka na re\u00e1lnych aktu\u00e1lnych \u00faloh\u00e1ch.<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/accelstor\/blog\/447390\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0440\u0430\u043c\u043a\u0430\u0445 \u0434\u0430\u043d\u043d\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0438 \u0445\u043e\u0442\u0435\u043b\u043e\u0441\u044c \u0431\u044b \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u0442\u044c \u043e\u0431 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044f\u0445 \u0440\u0430\u0431\u043e\u0442\u044b All Flash \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 AccelStor \u0441 \u043e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u0435\u0439\u0448\u0438\u0445 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u2013 VMware vSphere. \u0412 \u0447\u0430\u0441\u0442\u043d\u043e\u0441\u0442\u0438, \u0430\u043a\u0446\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0442\u0435\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u0445, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u043c\u043e\u0433\u0443\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0439 \u044d\u0444\u0444\u0435\u043a\u0442 \u043e\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0442\u0430\u043a\u043e\u0433\u043e \u043c\u043e\u0449\u043d\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430, \u043a\u0430\u043a All Flash. All Flash \u043c\u0430\u0441\u0441\u0438\u0432\u044b AccelStor NeoSapphire\u2122 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442 \u0441\u043e\u0431\u043e\u0439 \u043e\u0434\u043d\u043e \u0438\u043b\u0438 \u0434\u0432\u0443\u0445 \u043d\u043e\u0434\u043e\u0432\u044b\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23196,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-31230","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u0440\u0430\u043c\u043a\u0430\u0445 \u0434\u0430\u043d\u043d\u043e\u0439 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