{"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\/cs\/blog\/administrirovanie\/rekomendatsii-po-nastrojke-afa-accelstor-pri-rabote-s-vmware-vsphere","title":{"rendered":"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro pr\u00e1ci s VMware vSphere","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>V tomto \u010dl\u00e1nku bych cht\u011bl hovo\u0159it o zvl\u00e1\u0161tnostech fungov\u00e1n\u00ed All Flash pol\u00ed AccelStor s jednou z nejpopul\u00e1rn\u011bj\u0161\u00edch platforem pro virtualizaci \u2013 VMware vSphere. Konkr\u00e9tn\u011b bych se cht\u011bl zam\u011b\u0159it na parametry, kter\u00e9 pomohou dos\u00e1hnout maxim\u00e1ln\u00edho efektu p\u0159i vyu\u017e\u00edv\u00e1n\u00ed tak siln\u00e9ho n\u00e1stroje, jako je All Flash. <\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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 pole AccelStor NeoSapphire\u2122 jsou <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/professional-models\">jedno<\/a><\/noindex> nebo <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/modeli-vysokoj-dostupnosti-ha\">dvou<\/a><\/noindex> uzlov\u00e1 za\u0159\u00edzen\u00ed zalo\u017een\u00e1 na SSD \u00falo\u017ei\u0161t\u00edch s principi\u00e1ln\u011b odli\u0161n\u00fdm p\u0159\u00edstupem k realizaci koncepce ukl\u00e1d\u00e1n\u00ed dat a organizaci p\u0159\u00edstupu k nim pomoc\u00ed vlastn\u00ed technologie <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap\u00ae<\/a><\/noindex> m\u00edsto velmi popul\u00e1rn\u00edch algoritm\u016f RAID. Pole poskytuj\u00ed blokov\u00fd p\u0159\u00edstup pro hostitele prost\u0159ednictv\u00edm rozhran\u00ed Fibre Channel nebo iSCSI. Je spravedliv\u00e9 poznamenat, \u017ee modely s rozhran\u00edm ISCSI maj\u00ed tak\u00e9 jako p\u0159\u00edjemn\u00fd bonus souborov\u00fd p\u0159\u00edstup. Ale v r\u00e1mci tohoto \u010dl\u00e1nku se zam\u011b\u0159\u00edme na pou\u017eit\u00ed blokov\u00fdch protokol\u016f jako nejv\u00fdkonn\u011bj\u0161\u00edch pro All Flash.<\/p>\n<p><\/p>\n<p>Cel\u00fd proces nasazen\u00ed a n\u00e1sledn\u00e9ho nastaven\u00ed spolupr\u00e1ce pole AccelStor a virtualiza\u010dn\u00edho syst\u00e9mu VMware vSphere lze rozd\u011blit do n\u011bkolika f\u00e1z\u00ed:<\/p>\n<p><\/p>\n<ul>\n<li>Realizace topologie p\u0159ipojen\u00ed a nastaven\u00ed SAN s\u00edt\u011b;<\/li>\n<li>Nastaven\u00ed All Flash pole;<\/li>\n<li>Nastaven\u00ed hostitel\u016f ESXi;<\/li>\n<li>Nastaven\u00ed virtu\u00e1ln\u00edch stroj\u016f.<\/li>\n<\/ul>\n<p><\/p>\n<p>Pro p\u0159\u00edklady byly pou\u017eity pole AccelStor NeoSapphire\u2122 s rozhran\u00edm Fibre Channel a s rozhran\u00edm iSCSI. Jako z\u00e1kladn\u00ed software bylo pou\u017eito VMware vSphere 6.7U1.<\/p>\n<p><\/p>\n<p>P\u0159ed nasazen\u00edm syst\u00e9m\u016f popisovan\u00fdch v \u010dl\u00e1nku se d\u016frazn\u011b doporu\u010duje prostudovat dokumentaci od VMware t\u00fdkaj\u00edc\u00ed se 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>Topologie p\u0159ipojen\u00ed a nastaven\u00ed SAN s\u00edt\u011b<\/b><\/i><\/h3>\n<p><\/p>\n<p>Hlavn\u00edmi komponenty SAN s\u00edt\u011b jsou HBA adapt\u00e9ry v hostitel\u00edch ESXi, SAN switche a uzly pole. Typick\u00e1 topologie takov\u00e9 s\u00edt\u011b by vypadala takto:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/0fa8f428d3120b551747e21d43d9095d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Pod term\u00ednem Switch se zde rozum\u00ed jak samostatn\u00fd fyzick\u00fd switch, tak soubor switch\u016f (Fabric) a za\u0159\u00edzen\u00ed sd\u00edlen\u00e9 mezi r\u016fzn\u00fdmi slu\u017ebami (VSAN v p\u0159\u00edpad\u011b Fibre Channel a VLAN v p\u0159\u00edpad\u011b iSCSI). Pou\u017eit\u00ed dvou nez\u00e1visl\u00fdch switch\u016f\/Fabric vylou\u010d\u00ed mo\u017enou jednotlivou chybovou sd\u00edlenou lokalitu.<\/p>\n<p><\/p>\n<p>P\u0159\u00edm\u00e9 p\u0159ipojen\u00ed hostitel\u016f k poli, a\u010dkoli je podporov\u00e1no, se rozhodn\u011b nedoporu\u010duje. V\u00fdkon All Flash pol\u00ed je dostate\u010dn\u011b vysok\u00fd. A pro maxim\u00e1ln\u00ed rychlost je t\u0159eba vyu\u017e\u00edt v\u0161echny porty pole. Proto je p\u0159\u00edtomnost alespo\u0148 jednoho p\u0159ep\u00edna\u010de mezi hostiteli a NeoSapphire\u2122 nezbytn\u00e1.<\/p>\n<p><\/p>\n<p>P\u0159\u00edtomnost dvou port\u016f u HBA hostitele je rovn\u011b\u017e povinn\u00fdm po\u017eadavkem pro dosa\u017een\u00ed maxim\u00e1ln\u00edho v\u00fdkonu 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 nutn\u00e1 konfigurace z\u00f3nov\u00e1n\u00ed, aby se p\u0159ede\u0161lo mo\u017en\u00fdm koliz\u00edm mezi inici\u00e1tory a c\u00edli. Z\u00f3ny se vytv\u00e1\u0159ej\u00ed na principu \"jeden port inici\u00e1tora \u2013 jeden nebo v\u00edce port\u016f pole\".<\/p>\n<p><\/p>\n<p>Pokud je v\u0161ak pou\u017eito p\u0159ipojen\u00ed p\u0159es iSCSI a sd\u00edlen\u00fd p\u0159ep\u00edna\u010d s jin\u00fdmi slu\u017ebami, je nutn\u00e9 izolovat iSCSI provoz uvnit\u0159 samostatn\u00e9ho VLAN. Tak\u00e9 se siln\u011b doporu\u010duje povolit podporu Jumbo Frames (MTU = 9000) pro zv\u011bt\u0161en\u00ed velikosti paket\u016f v s\u00edti a t\u00edm sn\u00ed\u017eit mno\u017estv\u00ed ovl\u00e1dac\u00edch informac\u00ed p\u0159i p\u0159enosu. Je v\u0161ak d\u016fle\u017eit\u00e9 pamatovat na to, \u017ee pro spr\u00e1vn\u00e9 fungov\u00e1n\u00ed je pot\u0159eba zm\u011bnit parametr MTU na v\u0161ech komponent\u00e1ch s\u00edt\u011b v \u0159et\u011bzci \"inici\u00e1tor-p\u0159ep\u00edna\u010d-c\u00edl\".<\/p>\n<p><\/p>\n<h3><i><b>Konfigurace All Flash pole<\/b><\/i><\/h3>\n<p><\/p>\n<p>Pole je dod\u00e1v\u00e1no z\u00e1kazn\u00edk\u016fm ji\u017e se vytvo\u0159en\u00fdmi skupinami <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/flexiremap-technology\">FlexiRemap\u00ae<\/a><\/noindex>. Proto nen\u00ed pot\u0159eba \u017e\u00e1dn\u00fdch akc\u00ed k slou\u010den\u00ed ulo\u017ei\u0161\u0165 do jedn\u00e9 struktury. Sta\u010d\u00ed pouze vytvo\u0159it svazky po\u017eadovan\u00e9 velikosti a v pot\u0159ebn\u00e9m mno\u017estv\u00ed.<\/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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Pro pohodl\u00ed je k dispozici funkce hromadn\u00e9ho vytv\u00e1\u0159en\u00ed n\u011bkolika svazk\u016f dan\u00e9ho objemu. Ve v\u00fdchoz\u00edm nastaven\u00ed jsou vytv\u00e1\u0159eny \"tenk\u00e9\" svazky, proto\u017ee to umo\u017e\u0148uje efektivn\u011bji vyu\u017e\u00edt dostupn\u00fd prostor na ukl\u00e1d\u00e1n\u00ed (v\u010detn\u011b podpory Space Reclamation). Z hlediska v\u00fdkonu rozd\u00edl mezi \"tenk\u00fdmi\" a \"tlust\u00fdmi\" svazky nep\u0159esahuje 1%. Pokud v\u0161ak je pot\u0159eba \"vyt\u00e1hnout maximum\" z pole, lze v\u017edy konvertovat libovoln\u00fd \"tenk\u00fd\" svazek na \"tlust\u00fd\". Je v\u0161ak d\u016fle\u017eit\u00e9 pamatovat, \u017ee tato operace je nevratn\u00e1.<\/p>\n<p><\/p>\n<p>D\u00e1le je pot\u0159eba \u00abpublikovat\u00bb vytvo\u0159en\u00e9 svazky a nastavit k nim p\u0159\u00edstupov\u00e1 pr\u00e1va ze strany hostitel\u016f pomoc\u00ed ACL (IP adresy pro iSCSI a WWPN pro FC) a fyzick\u00e9ho rozd\u011blen\u00ed podle port\u016f pole. Pro iSCSI modely se to prov\u00e1d\u00ed vytvo\u0159en\u00edm c\u00edle.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habrastorage.org\/webt\/mw\/8y\/cg\/mw8ycgqngghoyuelortgysofswi.png\"><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Pro FC modely publikace prob\u00edh\u00e1 vytvo\u0159en\u00edm LUN pro ka\u017ed\u00fd port pole.<\/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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Pro urychlen\u00ed procesu nastaven\u00ed lze hostitele sdru\u017eovat do skupin. Pokud je na hostiteli pou\u017eita v\u00edceportov\u00e1 FC HBA (co\u017e se v praxi nej\u010dast\u011bji d\u011bje), syst\u00e9m automaticky rozpozn\u00e1, \u017ee porty takov\u00e9 HBA pat\u0159\u00ed k jednomu hostiteli d\u00edky WWPN, kter\u00fd se li\u0161\u00ed o jednotku. Tak\u00e9 pro oba rozhran\u00ed je podporov\u00e1no hromadn\u00e9 vytv\u00e1\u0159en\u00ed c\u00edle\/LUN.<\/p>\n<p><\/p>\n<p>D\u016fle\u017eit\u00fdm poznatkem v p\u0159\u00edpad\u011b vyu\u017eit\u00ed rozhran\u00ed iSCSI je vytvo\u0159en\u00ed v\u00edce c\u00edl\u016f pro svazky, aby se zv\u00fd\u0161ila v\u00fdkonnost, proto\u017ee frontu na c\u00edli nelze zm\u011bnit a fakticky se stane \u00fazk\u00fdm m\u00edstem.<\/p>\n<p><\/p>\n<p><b><i><\/p>\n<h3>Nastaven\u00ed hostitel\u016f ESXi<\/h3>\n<p><\/i><\/b><\/p>\n<p><\/p>\n<p>Z pohledu hostitel\u016f ESXi se z\u00e1kladn\u00ed nastaven\u00ed prov\u00e1d\u00ed podle zcela o\u010dek\u00e1van\u00e9ho sc\u00e9n\u00e1\u0159e. Postup pro iSCSI p\u0159ipojen\u00ed je n\u00e1sleduj\u00edc\u00ed:<\/p>\n<p><\/p>\n<ol>\n<li>P\u0159idat Software iSCSI Adapter (nen\u00ed pot\u0159eba, pokud byl ji\u017e p\u0159id\u00e1n, nebo v p\u0159\u00edpad\u011b pou\u017eit\u00ed Hardware iSCSI Adapter);<\/li>\n<li>Vytvo\u0159en\u00ed vSwitch, p\u0159es kter\u00fd bude proch\u00e1zet iSCSI provoz, a p\u0159id\u00e1n\u00ed do n\u011bj fyzick\u00fdch uplink\u016f a VMkernel;<\/li>\n<li>P\u0159id\u00e1n\u00ed do Dynamic Discovery adres pole;<\/li>\n<li>Vytvo\u0159en\u00ed Datastore<\/li>\n<\/ol>\n<p><\/p>\n<p><b>N\u011bkter\u00e9 d\u016fle\u017eit\u00e9 pozn\u00e1mky:<\/b><\/p>\n<p><\/p>\n<blockquote>\n<ul>\n<li>Obecn\u011b lze samoz\u0159ejm\u011b pou\u017e\u00edt i ji\u017e existuj\u00edc\u00ed vSwitch, ale v p\u0159\u00edpad\u011b samostatn\u00e9ho vSwitch bude spr\u00e1va nastaven\u00ed hostitele v\u00fdrazn\u011b jednodu\u0161\u0161\u00ed.<\/li>\n<li>Je nutn\u00e9 odd\u011blit spr\u00e1vu provozu a iSCSI na samostatn\u00fdch fyzick\u00fdch link\u00e1ch a\/nebo VLAN, aby se p\u0159ede\u0161lo probl\u00e9m\u016fm s v\u00fdkonem.<\/li>\n<li>IP adresy VMkernel a odpov\u00eddaj\u00edc\u00edch port\u016f All Flash pole by m\u011bly b\u00fdt ve stejn\u00e9 pods\u00edti op\u011bt z d\u016fvodu v\u00fdkonov\u00fdch ot\u00e1zek.<\/li>\n<li>Aby byla zaji\u0161t\u011bna odolnost podle pravidel VMware, mus\u00ed m\u00edt vSwitch alespo\u0148 dva fyzick\u00e9 uplinky.<\/li>\n<li>Pokud se pou\u017e\u00edvaj\u00ed Jumbo Frames, je nutn\u00e9 zm\u011bnit MTU jak u vSwitch, tak u VMkernel.<\/li>\n<li>Nen\u00ed od v\u011bci p\u0159ipomenout, \u017ee podle doporu\u010den\u00ed VMware je nutn\u00e9 prov\u00e9st nastaven\u00ed Teaming and Failover pro fyzick\u00e9 adapt\u00e9ry, kter\u00e9 budou pou\u017e\u00edv\u00e1ny pro pr\u00e1ci s iSCSI provozem. Konkr\u00e9tn\u011b by ka\u017ed\u00fd VMkernel m\u011bl fungovat pouze p\u0159es jeden uplink, druh\u00fd uplink by m\u011bl b\u00fdt p\u0159eveden do re\u017eimu unused. Pro vysokou dostupnost je t\u0159eba p\u0159idat dva VMkernel, p\u0159i\u010dem\u017e ka\u017ed\u00fd z nich bude pracovat p\u0159es sv\u016fj 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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 \/>\nPhysical Network Adapter (vmnic#)<\/p>\n<p>vmk1 (Storage01)<br \/>\nAktivn\u00ed adapt\u00e9ry<br \/>\nvmnic2<br \/>\nNepou\u017eit\u00e9 adapt\u00e9ry<br \/>\nvmnic3<\/p>\n<p>vmk2 (Storage02)<br \/>\nAktivn\u00ed adapt\u00e9ry<br \/>\nvmnic3<br \/>\nNepou\u017eit\u00e9 adapt\u00e9ry<br \/>\nvmnic2<\/p>\n<p>Pro p\u0159ipojen\u00ed p\u0159es Fibre Channel nejsou vy\u017eadov\u00e1ny \u017e\u00e1dn\u00e9 \u00favodn\u00ed akce. M\u016f\u017eete rovnou vytvo\u0159it Datastore.<\/p>\n<p><\/p>\n<p>Po vytvo\u0159en\u00ed Datastore je t\u0159eba zajistit, \u017ee se pou\u017e\u00edv\u00e1 politika Round Robin pro cesty k Target\/LUN jako nejv\u00fdkonn\u011bj\u0161\u00ed.<\/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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Ve v\u00fdchoz\u00edm nastaven\u00ed VMware p\u0159edpokl\u00e1d\u00e1 pou\u017e\u00edv\u00e1n\u00ed t\u00e9to politiky podle sch\u00e9matu: 1000 po\u017eadavk\u016f prost\u0159ednictv\u00edm prvn\u00edho path, n\u00e1sleduj\u00edc\u00edch 1000 po\u017eadavk\u016f prost\u0159ednictv\u00edm druh\u00e9ho path atd. Takov\u00e9 interakce hostitele se dvou\u0159\u00eddicov\u00fdm polem bude nevyv\u00e1\u017een\u00e9. Proto doporu\u010dujeme nastavit parametr Round Robin policy = 1 pomoc\u00ed Esxcli\/PowerCLI.<\/p>\n<p>\n<b class=\"spoiler_title\">Parametry<\/b><\/p>\n<p>Pro Esxcli:<\/p>\n<p><\/p>\n<ul>\n<li>Zobrazit 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>Kop\u00edrovat n\u00e1zev za\u0159\u00edzen\u00ed<\/li>\n<li>Zm\u011bnit politiku Round Robin<\/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\u011bt\u0161ina modern\u00edch aplikac\u00ed je navr\u017eena pro v\u00fdm\u011bnu datov\u00fdch paket\u016f velk\u00e9 velikosti, aby se maximalizovalo vyu\u017eit\u00ed \u0161\u00ed\u0159ky p\u00e1sma a sn\u00ed\u017eila z\u00e1t\u011b\u017e centr\u00e1ln\u00edho procesoru. Proto ESXi ve v\u00fdchoz\u00edm nastaven\u00ed odes\u00edl\u00e1 po\u017eadavky na I\/O za\u0159\u00edzen\u00ed v porc\u00edch a\u017e do 32767 KB. Pro n\u011bkter\u00e9 sc\u00e9n\u00e1\u0159e v\u0161ak bude efektivn\u011bj\u0161\u00ed v\u00fdm\u011bna men\u0161\u00edmi porcemi. V p\u0159\u00edpad\u011b pol\u00ed AccelStor to jsou n\u00e1sleduj\u00edc\u00ed sc\u00e9n\u00e1\u0159e:<\/p>\n<p><\/p>\n<ul>\n<li>Virtu\u00e1ln\u00ed stroj pou\u017e\u00edv\u00e1 UEFI m\u00edsto Legacy BIOS<\/li>\n<li>Pou\u017e\u00edv\u00e1 se vSphere Replication<\/li>\n<\/ul>\n<p><\/p>\n<p>Pro takov\u00e9 sc\u00e9n\u00e1\u0159e se doporu\u010duje zm\u011bnit hodnotu parametru 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Pro iSCSI p\u0159ipojen\u00ed se doporu\u010duje zm\u011bnit parametr Login Timeout na 30 (ve v\u00fdchoz\u00edm nastaven\u00ed 5) pro zv\u00fd\u0161en\u00ed stability p\u0159ipojen\u00ed a vypnout zpo\u017ed\u011bn\u00ed potvrzen\u00ed p\u0159en\u00e1\u0161en\u00fdch paket\u016f DelayedAck. Ob\u011b mo\u017enosti se nach\u00e1zej\u00ed v vSphere Client: Host \u2192 Configure \u2192 Storage \u2192 Storage Adapters \u2192 Advanced Options pro 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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>Dostate\u010dn\u011b jemn\u00fdm momentem je po\u010det pou\u017e\u00edvan\u00fdch svazk\u016f pro datastore. Je jasn\u00e9, \u017ee pro usnadn\u011bn\u00ed spr\u00e1vy vznik\u00e1 touha vytvo\u0159it jeden velk\u00fd svazek na cel\u00e9 \u00falo\u017ei\u0161t\u011b. Nicm\u00e9n\u011b existence n\u011bkolika svazk\u016f a t\u00edm p\u00e1dem datastore m\u00e1 pozitivn\u00ed vliv na celkov\u00fd v\u00fdkon (podrobn\u011bji o front\u00e1ch n\u00ed\u017ee v textu). Proto doporu\u010dujeme vytvo\u0159en\u00ed alespo\u0148 dvou svazk\u016f.<\/p>\n<p><\/p>\n<p>Je\u0161t\u011b relativn\u011b ned\u00e1vno doporu\u010dovala VMware omezit po\u010det virtu\u00e1ln\u00edch stroj\u016f na jednom datastore op\u011bt s c\u00edlem dos\u00e1hnout co nejvy\u0161\u0161\u00ed mo\u017en\u00e9 v\u00fdkonu. Nicm\u00e9n\u011b nyn\u00ed, zvl\u00e1\u0161\u0165 s roz\u0161\u00ed\u0159en\u00edm VDI, tento probl\u00e9m ji\u017e nen\u00ed tak akutn\u00ed. Ale to neodstra\u0148uje star\u00e9 pravidlo \u2014 rozd\u011blovat virtu\u00e1ln\u00ed stroje vy\u017eaduj\u00edc\u00ed intenzivn\u00ed IO mezi r\u016fzn\u00e9 datastore. Pro ur\u010den\u00ed optim\u00e1ln\u00edho po\u010dtu virtu\u00e1lek na jeden svazek nen\u00ed nic lep\u0161\u00edho ne\u017e prov\u00e9st <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/zaprosit-demo\">z\u00e1t\u011b\u017eov\u00e9 testov\u00e1n\u00ed All Flash pole AccelStor <\/a><\/noindex>v r\u00e1mci sv\u00e9 infrastruktury.<\/p>\n<p><\/p>\n<h3><i><b>Nastaven\u00ed virtu\u00e1ln\u00edch stroj\u016f<\/b><\/i><\/h3>\n<p><\/p>\n<p>P\u0159i nastavov\u00e1n\u00ed virtu\u00e1ln\u00edch stroj\u016f nejsou \u017e\u00e1dn\u00e9 zvl\u00e1\u0161tn\u00ed po\u017eadavky, sp\u00ed\u0161e jsou celkem b\u011b\u017en\u00e9:<\/p>\n<p><\/p>\n<ul>\n<li>Pou\u017eit\u00ed maxim\u00e1ln\u011b mo\u017en\u00e9 verze VM (kompatibilita)<\/li>\n<li>Opatrn\u011b zad\u00e1vat velikost RAM p\u0159i t\u011bsn\u00e9m um\u00edst\u011bn\u00ed virtu\u00e1ln\u00edch stroj\u016f, nap\u0159\u00edklad v VDI (proto\u017ee p\u0159i spu\u0161t\u011bn\u00ed se vytv\u00e1\u0159\u00ed str\u00e1nkovac\u00ed soubor odpov\u00eddaj\u00edc\u00ed velikosti RAM, co\u017e spot\u0159ebov\u00e1v\u00e1 u\u017eite\u010dnou kapacitu a ovliv\u0148uje kone\u010dn\u00fd v\u00fdkon)<\/li>\n<li>Pou\u017e\u00edvat nejv\u00fdkonn\u011bj\u0161\u00ed adapt\u00e9r a verze z pohledu IO: s\u00ed\u0165ov\u00fd typ VMXNET 3 a SCSI typ PVSCSI<\/li>\n<li>Pou\u017e\u00edvat typ disku Thick Provision Eager Zeroed pro maxim\u00e1ln\u00ed v\u00fdkon a Thin Provisioning pro maxim\u00e1ln\u011b efektivn\u00ed vyu\u017eit\u00ed \u00falo\u017en\u00e9ho prostoru<\/li>\n<li>Pokud je to mo\u017en\u00e9, omezit provoz stroj\u016f, kter\u00e9 nejsou kritick\u00e9 k IO, pomoc\u00ed Virtual Disk Limit<\/li>\n<li>Nutn\u011b nainstalovat VMware Tools <\/li>\n<\/ul>\n<p><\/p>\n<h3><i><b>Pozn\u00e1mky k front\u00e1m<\/b><\/i><\/h3>\n<p><\/p>\n<p>Fronta (nebo Outstanding I\/Os) je po\u010det po\u017eadavk\u016f na vstup\/v\u00fdstup (SCSI p\u0159\u00edkaz\u016f), kter\u00e9 \u010dekaj\u00ed na zpracov\u00e1n\u00ed v dan\u00fd okam\u017eik u konkr\u00e9tn\u00edho za\u0159\u00edzen\u00ed\/aplikace. V p\u0159\u00edpad\u011b p\u0159epln\u011bn\u00ed fronty se vyskytuj\u00ed chyby QFULL, co\u017e se nakonec projevuje ve zv\u00fd\u0161en\u00ed parametru latence. P\u0159i pou\u017eit\u00ed diskov\u00fdch (spindle) syst\u00e9m\u016f ukl\u00e1d\u00e1n\u00ed teoreticky plat\u00ed, \u017ee \u010d\u00edm vy\u0161\u0161\u00ed je fronta, t\u00edm vy\u0161\u0161\u00ed je jejich v\u00fdkon. Nicm\u00e9n\u011b, zneu\u017e\u00edvat to nen\u00ed moudr\u00e9, proto\u017ee se snadno m\u016f\u017eete dostat k QFULL. V p\u0159\u00edpad\u011b All Flash syst\u00e9m\u016f je to na jednu stranu jednodu\u0161\u0161\u00ed: pole m\u00e1 latence \u0159\u00e1dov\u011b ni\u017e\u0161\u00ed, a proto v\u011bt\u0161inou nen\u00ed pot\u0159eba samostatn\u011b regulovat velikost front. Na druhou stranu, v n\u011bkter\u00fdch sc\u00e9n\u00e1\u0159\u00edch pou\u017eit\u00ed (siln\u00fd odstup v po\u017eadavc\u00edch na IO pro konkr\u00e9tn\u00ed virtu\u00e1ln\u00ed stroje, testy maxim\u00e1ln\u00edho v\u00fdkonu atd.) je t\u0159eba, pokud ne m\u011bnit parametry front, alespo\u0148 ch\u00e1pat, jak\u00fdch hodnot lze dos\u00e1hnout, a co je nejd\u016fle\u017eit\u011bj\u0161\u00ed, jak\u00fdmi cestami.<\/p>\n<p><\/p>\n<p>Na samotn\u00e9m All Flash poli AccelStor neexistuj\u00ed \u017e\u00e1dn\u00e1 omezen\u00ed t\u00fdkaj\u00edc\u00ed se svazk\u016f nebo port\u016f vstup\/v\u00fdstup. V p\u0159\u00edpad\u011b pot\u0159eby m\u016f\u017ee dokonce jedin\u00fd svazek z\u00edskat v\u0161echny prost\u0159edky pole. Jedin\u00fdm omezen\u00edm na fronty jsou iSCSI c\u00edle. Pr\u00e1v\u011b z tohoto d\u016fvodu bylo v\u00fd\u0161e uvedeno, \u017ee je pot\u0159eba vytvo\u0159it n\u011bkolik (ide\u00e1ln\u011b a\u017e 8 kus\u016f) c\u00edl\u016f na ka\u017ed\u00fd svazek pro p\u0159ekon\u00e1n\u00ed tohoto limitu. Tak\u00e9 opakujeme, \u017ee pole AccelStor jsou velmi v\u00fdkonn\u00e1 \u0159e\u0161en\u00ed. Proto by m\u011bly b\u00fdt vyu\u017eity v\u0161echny rozhran\u00ed porty syst\u00e9mu pro dosa\u017een\u00ed maxim\u00e1ln\u00ed rychlosti.<\/p>\n<p><\/p>\n<p>Z pohledu hostitele ESXi je situace zcela jin\u00e1. Samotn\u00fd hostitel aplikuje praxi rovnopr\u00e1vn\u00e9ho p\u0159\u00edstupu k prost\u0159edk\u016fm pro v\u0161echny \u00fa\u010dastn\u00edky. Proto existuj\u00ed samostatn\u00e9 fronty IO pro hostitelsk\u00fd OS a HBA. Fronty pro hostitelsk\u00fd OS se kombinuj\u00ed z front k virtu\u00e1ln\u00edmu SCSI adapt\u00e9ru a virtu\u00e1ln\u00edmu disku:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro 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 na konkr\u00e9tn\u00edm typu\/v\u00fdrobci:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/a0b078e63bdf8f306a25bfecd1310cb0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kone\u010dn\u00fd v\u00fdkon virtu\u00e1ln\u00edho stroje bude ur\u010den nejni\u017e\u0161\u00ed hodnotou ukazatele fronty (Queue Depth limit) mezi komponentami hostitele. <\/p>\n<p><\/p>\n<p>D\u00edky t\u011bmto hodnot\u00e1m m\u016f\u017eeme vyhodnotit v\u00fdkonnostn\u00ed ukazatele, kter\u00e9 m\u016f\u017eeme z\u00edskat v ur\u010dit\u00e9 konfiguraci. Nap\u0159\u00edklad chceme zjistit teoretickou v\u00fdkonnost virtu\u00e1ln\u00edho stroje (bez souvislosti s blokem) s latenc\u00ed 0,5 ms. Pak jej\u00ed IOPS = (1,000\/latency) * Outstanding I\/Os (Queue Depth limit)<\/p>\n<p>\n<b class=\"spoiler_title\">P\u0159\u00edklady<\/b><\/p>\n<p><b>P\u0159\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>Zde Queue Depth limit ur\u010duje Emulex HBA. Proto IOPS = (1000\/0.5)*32 = 64K<\/p>\n<p><\/p>\n<p><b>P\u0159\u00edklad 2<\/b><\/p>\n<p><\/p>\n<ul>\n<li>VMware iSCSI Software 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>Zde Queue Depth limit ur\u010duje ji\u017e Paravirtual SCSI Adapt\u00e9r. Proto IOPS = (1000\/0.5)*64 = 128K<\/p>\n<p><\/p>\n<p>Nejlep\u0161\u00ed modely All Flash pol\u00ed AccelStor (nap\u0159\u00edklad <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-p710\">P710<\/a><\/noindex>) jsou schopny poskytovat v\u00fdkon 700K IOPS p\u0159i z\u00e1pisu s blokem 4K. P\u0159i takov\u00e9 velikosti bloku je zcela z\u0159ejm\u00e9, \u017ee jedin\u00fd virtu\u00e1ln\u00ed stroj nen\u00ed schopen zat\u00ed\u017eit takov\u00e9 pole. K tomu budou pot\u0159eba 11 (pro p\u0159\u00edklad 1) nebo 6 (pro p\u0159\u00edklad 2) virtu\u00e1ln\u00edch stroj\u016f.<\/p>\n<p><\/p>\n<p>V d\u016fsledku toho, p\u0159i spr\u00e1vn\u00e9m nastaven\u00ed v\u0161ech popsan\u00fdch komponent virtu\u00e1ln\u00edho datacentra, lze dos\u00e1hnout velmi p\u016fsobiv\u00fdch v\u00fdsledk\u016f v oblasti v\u00fdkonu.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Doporu\u010den\u00ed pro nastaven\u00ed AFA AccelStor pro pr\u00e1ci s VMware vSphere\" src=\"\/wp-content\/uploads\/2019\/04\/eee93cccf16539410695c6f79d94deda.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><i>4K Random, 70% Read\/30% Write<\/i><\/p>\n<p><\/p>\n<p>Ve skute\u010dnosti je re\u00e1ln\u00fd sv\u011bt mnohem slo\u017eit\u011bj\u0161\u00ed, aby ho bylo mo\u017en\u00e9 popsat jednoduch\u00fdm vzorcem. Na jednom hostiteli se v\u017edy nach\u00e1z\u00ed mnoho virtu\u00e1ln\u00edch stroj\u016f s r\u016fzn\u00fdmi konfiguracemi a po\u017eadavky na IO. A zpracov\u00e1n\u00ed vstupu\/v\u00fdstupu zaji\u0161\u0165uje procesor hostitele, jeho\u017e v\u00fdkon nen\u00ed nekone\u010dn\u00fd. Tak, aby se pln\u011b vyu\u017eil potenci\u00e1l t\u00e9\u017ee <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/product\/neosapphire-p710\">modely P710<\/a><\/noindex> v praxi bude pot\u0159eba t\u0159\u00ed hostitel\u016f. Plus aplikace, kter\u00e9 b\u011b\u017e\u00ed uvnit\u0159 virtu\u00e1ln\u00edch stroj\u016f, vn\u00e1\u0161ej\u00ed sv\u00e9 korekce. Proto pro p\u0159esn\u00e9 sizing doporu\u010dujeme <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/page\/zaprosit-demo\">vyu\u017e\u00edt ov\u011b\u0159ov\u00e1n\u00ed v praxi testov\u00fdmi modely<\/a><\/noindex> All Flash pol\u00ed <noindex><a rel=\"nofollow\" href=\"http:\/\/accelstor.ru\/\">AccelStor<\/a><\/noindex> v r\u00e1mci infrastruktury z\u00e1kazn\u00edka na skute\u010dn\u00fdch aktu\u00e1ln\u00edch \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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