{"id":19166,"date":"2026-09-27T22:10:48","date_gmt":"2026-09-27T14:10:48","guid":{"rendered":"https:\/\/synopower.club\/?post_type=docs&#038;p=19166"},"modified":"2026-09-27T22:10:55","modified_gmt":"2026-09-27T14:10:55","password":"","slug":"synology-virtual-machine-cluster-vmm-pro","status":"publish","type":"docs","link":"https:\/\/synopower.club\/cs\/docs\/synology-virtual-machine-cluster-vmm-pro\/","title":{"rendered":"Virtu\u00e1ln\u00ed strojov\u00fd cluster Synology v produk\u010dn\u00edm prost\u0159ed\u00ed: Na\u0161e 3uzlov\u00e1 instalace VMM Pro"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Virtu\u00e1ln\u00ed cluster Synology nen\u00ed jen laboratorn\u00ed hra\u010dka. Tento obchod, na\u0161e mail relay, na\u0161e sestersk\u00e1 zna\u010dka a n\u011bkolik hostovan\u00fdch webov\u00fdch str\u00e1nek b\u011b\u017e\u00ed jako hostovan\u00e9 servery na t\u0159ech NAS jednotk\u00e1ch Synology spojen\u00fdch v jednom clusteru Virtual Machine Manager, chr\u00e1n\u011bn\u00e9m licenc\u00ed VMM Pro. V sou\u010dasn\u00e9 dob\u011b na n\u011bm \u017eije osm hostovan\u00fdch server\u016f, sedm z nich b\u011b\u017e\u00ed nep\u0159etr\u017eit\u011b a \u0161est je replikov\u00e1no podle pl\u00e1nu na z\u00e1lo\u017en\u00ed hostitel, kter\u00fd tr\u00e1v\u00ed v\u011bt\u0161inu sv\u00e9ho \u017eivota v re\u017eimu sp\u00e1nku. Tento \u010dl\u00e1nek provede nastaven\u00edm virtu\u00e1ln\u00edho stroje Synology v jeho skute\u010dn\u00e9m provozu: kter\u00fd hardware co d\u011bl\u00e1, pro\u010d jsme zvolili pl\u00e1novanou replikaci m\u00edsto vysok\u00e9 dostupnosti, jak bychom prov\u00e1d\u011bli failover a omezen\u00ed, kter\u00e1 byste m\u011bli zn\u00e1t p\u0159ed jeho kop\u00edrov\u00e1n\u00edm.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Bod SynoPower Club:<\/strong> Nej\u010dast\u011bj\u0161\u00ed ot\u00e1zka, kterou dost\u00e1v\u00e1m od z\u00e1kazn\u00edk\u016f kupuj\u00edc\u00edch VMM Pro, je, jak to vypad\u00e1, kdy\u017e na tom z\u00e1vis\u00ed skute\u010dn\u00e1 firma. Tak\u017ee tady je ten n\u00e1\u0161, v\u010detn\u011b bradavic. Konzole zobrazuje trval\u00e9 varov\u00e1n\u00ed, proto\u017ee jeden hostitel je z\u00e1m\u011brn\u011b vypnut\u00fd, z\u00e1lo\u017en\u00ed server se probouz\u00ed pouze pro sb\u011br replik a webov\u00fd server uvnit\u0159 hostovan\u00e9ho \u00falo\u017ei\u0161t\u011b m\u00e1 nalepenou pozn\u00e1mku pro den failoveru. Nic z toho v bro\u017eu\u0159e nen\u00ed. To v\u0161e je d\u016fvod, pro\u010d n\u00e1s cluster virtu\u00e1ln\u00edch stroj\u016f Synology stoj\u00ed zlomek toho, co by stejn\u00e1 redundance st\u00e1la v pronajat\u00e9m datov\u00e9m centru.<\/p>\n<\/blockquote>\n\n\n\n<h2 id=\"what-a-synology-virtual-machine-cluster-looks-like-in-production\" class=\"wp-block-heading\">Jak vypad\u00e1 cluster virtu\u00e1ln\u00edch stroj\u016f Synology v produk\u010dn\u00edm prost\u0159ed\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Virtual Machine Manager umo\u017e\u0148uje sd\u00edlet jednu konzoli a\u017e se sedmi NAS hostiteli Synology. Ka\u017ed\u00fd hostitel si uchov\u00e1v\u00e1 vlastn\u00ed \u00falo\u017ei\u0161t\u011b a spou\u0161t\u00ed vlastn\u00ed hostovan\u00e9 servery a bezplatn\u00e1 edice je ji\u017e spravuje jako cluster. VMM Pro p\u0159id\u00e1v\u00e1 mo\u017enost pracovat nap\u0159\u00ed\u010d hostiteli: p\u0159esunout spu\u0161t\u011bn\u00fd virtu\u00e1ln\u00ed stroj Synology z jednoho serveru na druh\u00fd, automaticky ho restartovat jinde nebo kop\u00edrovat jeho sn\u00edmky na jin\u00fd hostitel podle pl\u00e1nu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toto rozli\u0161en\u00ed formuje v\u0161e n\u00ed\u017ee uveden\u00e9. N\u00e1\u0161 cluster se skl\u00e1d\u00e1 ze t\u0159\u00ed hostitel\u016f, ale jeho hodnota pramen\u00ed z ochrann\u00fdch pl\u00e1n\u016f, kter\u00e9 mezi nimi b\u011b\u017e\u00ed, nikoli ze skute\u010dnosti, \u017ee se objevuj\u00ed v jednom seznamu. Pokud se st\u00e1le rozhodujete mezi edicemi, na\u0161e srovn\u00e1n\u00ed <a href=\"\/cs\/docs\/synology-virtual-machine-manager-vs-vmm-pro\/\">Virtual Machine Manager a VMM Pro<\/a> pokr\u00fdv\u00e1 cel\u00e9 rozd\u011blen\u00ed funkc\u00ed.<\/p>\n\n\n\n<h2 id=\"our-three-synology-virtual-machine-hosts-and-what-runs-where\" class=\"wp-block-heading\">Na\u0161i t\u0159i hostitel\u00e9 virtu\u00e1ln\u00edch stroj\u016f Synology a co kde b\u011b\u017e\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cluster kombinuje t\u0159i generace hardwaru Synology a ka\u017ed\u00fd hostitel virtu\u00e1ln\u00edho stroje Synology dost\u00e1v\u00e1 \u00fakol, kter\u00fd mu vyhovuje.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Hostitel<\/th><th>Role<\/th><th>Co b\u011b\u017e\u00ed<\/th><\/tr><\/thead><tbody><tr><td>DS1621xs+<\/td><td>Prim\u00e1rn\u00ed produk\u010dn\u00ed hostitel<\/td><td>Toto \u00falo\u017ei\u0161t\u011b je pou\u017e\u00edv\u00e1no jako host Virtual DSM na \u00falo\u017ei\u0161ti NVMe a nav\u00edc je k dispozici jeden web z\u00e1kazn\u00edka.<\/td><\/tr><tr><td>FS1018<\/td><td>Hostitel sekund\u00e1rn\u00ed produkce<\/td><td>Na\u0161e po\u0161tovn\u00ed rel\u00e9, webov\u00e9 str\u00e1nky na\u0161\u00ed sestersk\u00e9 zna\u010dky, dva hostovan\u00e9 weby a jeden mal\u00fd hostuj\u00edc\u00ed web<\/td><\/tr><tr><td>FS2017<\/td><td>Studen\u00fd pohotovostn\u00ed re\u017eim a c\u00edl repliky<\/td><td>Nic aktivn\u00edho; p\u0159ij\u00edm\u00e1 napl\u00e1novan\u00e9 repliky a znovu se vyp\u00edn\u00e1.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u00dalo\u017ei\u0161t\u011b se nach\u00e1z\u00ed na DS1621xs+, proto\u017ee je to nejvyt\u00ed\u017een\u011bj\u0161\u00ed virtu\u00e1ln\u00ed stroj Synology v clusteru a m\u00e1 historii, kter\u00e1 to dokazuje. P\u0159esunuli jsme ho tam z FS1018 v srpnu 2026 pot\u00e9, co jsme nam\u011b\u0159ili, \u017ee men\u0161\u00ed hostitel b\u011b\u017e\u00ed deset virtu\u00e1ln\u00edch CPU na \u010dty\u0159ech hardwarov\u00fdch vl\u00e1knech. Oba produk\u010dn\u00ed hostitel\u00e9 pou\u017e\u00edvaj\u00ed stejnou generaci procesor\u016f se stejnou taktovac\u00ed frekvenc\u00ed, tak\u017ee jeden po\u017eadavek b\u011b\u017e\u00ed na kter\u00e9mkoli z nich stejnou rychlost\u00ed. V\u011bt\u0161\u00ed hostitel z\u00edsk\u00e1v\u00e1 m\u00edsto: v\u00edce vl\u00e1ken, tak\u017ee zanepr\u00e1zdn\u011bn\u00ed host\u00e9 p\u0159estanou soupe\u0159it o stejn\u00e1 j\u00e1dra.<\/p>\n\n\n\n<h2 id=\"why-we-chose-replication-over-high-availability\" class=\"wp-block-heading\">Pro\u010d jsme zvolili replikaci p\u0159ed vysokou dostupnost\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na pap\u00ed\u0159e jsou t\u0159i hostitel\u00e9 p\u0159esn\u011b to, co vysok\u00e1 dostupnost VMM Pro pot\u0159ebuje. Synology vy\u017eaduje alespo\u0148 t\u0159i hostitele v clusteru a ti rozhoduj\u00ed o stavu clusteru v\u011bt\u0161inou, a proto b\u00edl\u00e1 kniha doporu\u010duje lich\u00fd po\u010det uzl\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e1\u010dek je v tom, \u017ee vysok\u00e1 dostupnost o\u010dek\u00e1v\u00e1, \u017ee tyto hostitele budou online. N\u00e1\u0161 t\u0159et\u00ed hostitel je studen\u00fd z\u00e1lo\u017en\u00ed server, kter\u00fd je v\u011bt\u0161inu \u010dasu vypnut\u00fd, aby se \u0161et\u0159ila energie a \u0161um, tak\u017ee cluster nemohl udr\u017eet v\u011bt\u0161inu, na kter\u00e9 z\u00e1vis\u00ed automatick\u00e9 p\u0159epnut\u00ed p\u0159i selh\u00e1n\u00ed. M\u00edsto toho, abychom provozovali t\u0159et\u00ed po\u010d\u00edta\u010d cel\u00fd den, jsme zvolili ochrann\u00e9 pl\u00e1ny: pl\u00e1novan\u00e9 snapshoty se vzd\u00e1lenou replikac\u00ed na z\u00e1lo\u017en\u00ed server. P\u0159epnut\u00ed p\u0159i selh\u00e1n\u00ed se st\u00e1v\u00e1 z\u00e1m\u011brn\u00fdm, manu\u00e1ln\u00edm krokem m\u011b\u0159en\u00fdm v minut\u00e1ch, nikoli automatick\u00fdm v sekund\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pro mal\u00fd obchod se takov\u00fd obchod vyplat\u00ed. Provoz z\u00e1lo\u017en\u00edho serveru nestoj\u00ed t\u00e9m\u011b\u0159 nic a repliky na n\u011bm u\u017e m\u00e1me, kdy\u017e je pot\u0159ebujeme. Pokud by dostupnost n\u011bkdy z\u00e1le\u017eela v\u00edc ne\u017e \u00fa\u010det za elekt\u0159inu, p\u0159em\u011bna z\u00e1lo\u017en\u00edho serveru na v\u017edy zapnut\u00e9ho t\u0159et\u00edho hostitele by odemkla vysokou dostupnost na stejn\u00e9 licenci.<\/p>\n\n\n\n<h2 id=\"replicating-a-synology-virtual-machine-to-a-standby-host-in-4-steps\" class=\"wp-block-heading\">Replikace virtu\u00e1ln\u00edho po\u010d\u00edta\u010de Synology na z\u00e1lo\u017en\u00ed hostitel ve 4 kroc\u00edch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Toto je postup, kter\u00fd jsme dodr\u017eeli k ochran\u011b ka\u017ed\u00e9ho hosta. Vy\u017eaduje VMM Pro, alespo\u0148 dva hostitele v clusteru a svazky Btrfs na zdrojov\u00e9m i c\u00edlov\u00e9m serveru.<\/p>\n\n\n<div id=\"rank-math-howto\" class=\"rank-math-block\" >\n<div class=\"rank-math-howto-description\">\n\n<\/div>\n\n<div class=\"rank-math-steps\">\n<div id=\"step-1\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">P\u0159ipojte se k hostitel\u016fm<\/h3>\n<div class=\"rank-math-step-content\"><p>Nainstalujte Virtual Machine Manager na ka\u017ed\u00fd NAS, ka\u017ed\u00e9mu p\u0159id\u011blte statickou IP adresu a svazek Btrfs a pot\u00e9 je p\u0159idejte do jednoho clusteru z prim\u00e1rn\u00edho hostitele. Zapn\u011bte z\u00e1lo\u017en\u00ed server, kdy\u017e je zapnut\u00fd.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-2\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Aktivujte VMM Pro<\/h3>\n<div class=\"rank-math-step-content\"><p>Zadejte licenci VMM Pro, kter\u00e1 pokr\u00fdv\u00e1 v\u0161echny hostitele v\u010detn\u011b z\u00e1lo\u017en\u00edho. Bal\u00ed\u010dek pro 3 uzly pokr\u00fdv\u00e1 cluster, jako je ten n\u00e1\u0161. Pokud n\u00e1vrh testujete, pou\u017eijte nejprve 30denn\u00ed zku\u0161ebn\u00ed verzi.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-3\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Vytvo\u0159te pl\u00e1n ochrany<\/h3>\n<div class=\"rank-math-step-content\"><p>Pro ka\u017ed\u00e9ho hosta vytvo\u0159te pl\u00e1n s lok\u00e1ln\u00edmi sn\u00edmky a vzd\u00e1lenou replikac\u00ed, vyberte z\u00e1lo\u017en\u00edho hostitele jako c\u00edl a zvolte pl\u00e1n a z\u00e1sady uchov\u00e1v\u00e1n\u00ed dat, kter\u00e9 odpov\u00eddaj\u00ed tomu, kolik dat si host m\u016f\u017ee dovolit ztratit.<\/p>\n<\/div>\n<\/div>\n<div id=\"step-4\" class=\"rank-math-step\">\n<h3 class=\"rank-math-step-title\">Nacvi\u010dte si failover<\/h3>\n<div class=\"rank-math-step-content\"><p>Ru\u010dn\u011b po\u0159i\u010fte sn\u00edmek uzam\u010den\u00e9ho serveru, ov\u011b\u0159te, zda se replika zobrazuje na z\u00e1lo\u017en\u00edm serveru, a pot\u00e9 si nacvi\u010dte spu\u0161t\u011bn\u00ed nekritick\u00e9ho hosta na z\u00e1lo\u017en\u00edm serveru, aby se skute\u010dn\u00e9 p\u0159epnut\u00ed p\u0159i selh\u00e1n\u00ed neprov\u00e1d\u011blo poprv\u00e9.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n\n\n\n<h2 id=\"how-the-protection-plans-are-tuned\" class=\"wp-block-heading\">Jak jsou pl\u00e1ny ochrany lad\u011bny<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160est z na\u0161ich osmi host\u016f m\u00e1 ochrann\u00fd pl\u00e1n a ka\u017ed\u00fd chr\u00e1n\u011bn\u00fd virtu\u00e1ln\u00ed po\u010d\u00edta\u010d Synology replikuje data do z\u00e1lo\u017en\u00edho syst\u00e9mu. Ne ka\u017ed\u00fd host si zaslou\u017e\u00ed stejn\u00fd pl\u00e1n, tak\u017ee se d\u011bl\u00ed na dv\u011b skupiny.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ka\u017ed\u00fdch dvan\u00e1ct hodin:<\/strong> tento obchod, po\u0161tovn\u00ed rel\u00e9 a webov\u00e9 str\u00e1nky jednoho z\u00e1kazn\u00edka, kde by ztr\u00e1ta jednoho dne zm\u011bn bolela.<\/li>\n\n\n\n<li><strong>Jednou denn\u011b v 04:00:<\/strong> dva hostovan\u00e9 weby a mal\u00fd host, kde sta\u010d\u00ed denn\u00ed n\u00e1v\u0161t\u011bvnost.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Uchov\u00e1v\u00e1n\u00ed se \u0159\u00edd\u00ed stejnou logikou a pou\u017e\u00edv\u00e1 vestav\u011bn\u00e9 z\u00e1sady Virtual Machine Manager pojmenovan\u00e9 podle c\u00edle bodu obnovy: nejvyt\u00ed\u017een\u011bj\u0161\u00ed host\u00e9 si ponechaj\u00ed hodinovou z\u00e1sadu, ti ti\u0161\u0161\u00ed denn\u00ed nebo t\u00fddenn\u00ed z\u00e1sadu. Dva host\u00e9 bez pl\u00e1nu jsou vy\u0159azen\u00fd sledova\u010d projekt\u016f, kter\u00fd je vypnut\u00fd, a jeden web, kter\u00fd pl\u00e1n je\u0161t\u011b nem\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jeden detail n\u00e1s hned na za\u010d\u00e1tku zasko\u010dil. Bezplatn\u00e1 verze uchov\u00e1v\u00e1 maxim\u00e1ln\u011b 32 sn\u00edmk\u016f na hosta a dvan\u00e1ctihodinov\u00fd pl\u00e1n toho dos\u00e1hne za \u0161estn\u00e1ct dn\u00ed. VMM Pro zvy\u0161uje strop na 255, ale st\u00e1le uzamkneme v\u0161echny ru\u010dn\u011b po\u0159\u00edzen\u00e9 sn\u00edmky, kter\u00e9 chceme uchovat, tak\u017ee je pl\u00e1n nikdy neodstran\u00ed.<\/p>\n\n\n\n<h2 id=\"how-a-small-team-protects-every-synology-virtual-machine\" class=\"wp-block-heading\">Jak mal\u00fd t\u00fdm chr\u00e1n\u00ed ka\u017ed\u00fd virtu\u00e1ln\u00ed stroj Synology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cel\u00fd cluster provozuje velmi mal\u00fd t\u00fdm, co\u017e je hlavn\u00ed v\u00fdhoda. Nikdo se cel\u00fd den ned\u00edv\u00e1 na dashboardy, tak\u017ee n\u00e1vrh mus\u00ed chr\u00e1nit ka\u017ed\u00fd virtu\u00e1ln\u00ed stroj Synology, ani\u017e by si kdokoli vzpomn\u011bl na stisknut\u00ed tla\u010d\u00edtka.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pl\u00e1ny ochrany b\u011b\u017e\u00ed podle vlastn\u00edho harmonogramu. Pohotovostn\u00ed syst\u00e9m se probud\u00ed, p\u0159ijme repliky a znovu se usp\u00ed. P\u0159ed jakoukoli riskantn\u00ed zm\u011bnou, jako je zm\u011bna velikosti hostovan\u00e9ho syst\u00e9mu nebo aktualizace plugin\u016f, nejprve po\u0159\u00edd\u00edme sn\u00edmek uzam\u010den\u00e9ho syst\u00e9mu; n\u00e1\u0161 <a href=\"https:\/\/synopower.club\/cs\/synology-vmm-pro-right-size-vm\/\">n\u00e1vod na spr\u00e1vn\u00e9 dimenzov\u00e1n\u00ed<\/a> ukazuje tuto rutinu v praxi. Kdy\u017e se v obchod\u011b n\u011bco pokazilo, jako nap\u0159\u00edklad v <a href=\"\/cs\/docs\/email-bombing-contact-form-synology-nas\/\">bombardov\u00e1n\u00ed e-mailem s kontaktn\u00edm formul\u00e1\u0159em<\/a> Tento m\u011bs\u00edc jsme trasovali, protokoly, po\u0161ta a sn\u00edmky byly na hardwaru, kter\u00fd spravujeme.<\/p>\n\n\n\n<h2 id=\"what-failover-day-looks-like\" class=\"wp-block-heading\">Jak vypad\u00e1 den failoveru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Replika obsahuje v\u0161e, co je sou\u010d\u00e1st\u00ed virtu\u00e1ln\u00edho stroje Synology, v\u010detn\u011b nastaven\u00ed, kter\u00e1 byla vylad\u011bna pro hostitele, ze kter\u00e9ho poch\u00e1z\u00ed. Na to lid\u00e9 zapom\u00ednaj\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Host \u00falo\u017ei\u0161t\u011b je vylad\u011bn pro DS1621xs+, v\u010detn\u011b po\u010dtu soub\u011b\u017en\u00fdch pracovn\u00edk\u016f, kter\u00e9 jeho webov\u00fd server sm\u00ed spustit. Pokud bude \u00falo\u017ei\u0161t\u011b muset n\u011bkdy b\u011b\u017eet na hostiteli s men\u0161\u00edm po\u010dtem hardwarov\u00fdch vl\u00e1ken, mus\u00ed se tento limit sn\u00ed\u017eit p\u0159ed p\u0159\u00edchodem provozu, jinak se host p\u0159et\u00ed\u017e\u00ed. N\u00e1\u0161 runbook uv\u00e1d\u00ed tyto zm\u011bny jako prvn\u00ed krok po spu\u0161t\u011bn\u00ed repliky, n\u00e1sledovan\u00fd kontrolou, zda web, pokladna a po\u0161ta odpov\u00eddaj\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Napi\u0161te si vlastn\u00ed seznam, ne\u017e ho budete pot\u0159ebovat. Replikace p\u0159esune virtu\u00e1ln\u00ed stroj Synology na druh\u00fd hostitel; kontroln\u00ed seznam ho tam zprovozn\u00ed.<\/p>\n\n\n\n<h2 id=\"capacity-planning-memory-is-the-real-limit\" class=\"wp-block-heading\">Pl\u00e1nov\u00e1n\u00ed kapacity: Pam\u011b\u0165 je skute\u010dn\u00fdm limitem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na na\u0161ich hostitel\u00edch je pam\u011b\u0165 ka\u017ed\u00e9ho spu\u0161t\u011bn\u00e9ho hosta rezervovan\u00e1 a uzam\u010den\u00e1, tak\u017ee ji DSM nem\u016f\u017ee sd\u00edlet ani znovu z\u00edskat. Skute\u010dn\u00fdm limitem kapacity clusteru virtu\u00e1ln\u00edch stroj\u016f Synology je tedy pam\u011b\u0165, nikoli procesor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1lo\u017en\u00ed nebo sekund\u00e1rn\u00ed virtu\u00e1ln\u00ed po\u010d\u00edta\u010d Synology je u\u017eite\u010dn\u00fd pouze tehdy, pokud m\u00e1 dostatek voln\u00e9 pam\u011bti pro hosty, kte\u0159\u00ed by na n\u011bm mohli p\u0159ist\u00e1t. Proto jsme sn\u00ed\u017eili pam\u011b\u0165 \u00falo\u017ei\u0161t\u011b hosta ze \u0161estn\u00e1cti gigabajt\u016f na osm, jakmile m\u011b\u0159en\u00ed uk\u00e1zala, \u017ee nikdy nepot\u0159ebuje v\u00edce. Osm gigabajt\u016f, kter\u00e9 jsme z\u00edskali zp\u011bt, je prostor, kter\u00fd m\u016f\u017ee jin\u00fd hostitel vyu\u017e\u00edt b\u011bhem failoveru, ani\u017e by si cokoli kupoval.<\/p>\n\n\n\n<h2 id=\"why-this-cluster-runs-on-synology-and-vmm-pro\" class=\"wp-block-heading\">Pro\u010d tento cluster b\u011b\u017e\u00ed na Synology a VMM Pro<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Up\u0159\u00edmn\u00fdm d\u016fvodem je pom\u011br cena\/v\u00fdkon. T\u0159i NAS jednotky Synology, kter\u00e9 tak\u00e9 ukl\u00e1daj\u00ed na\u0161e soubory, jedna <a href=\"https:\/\/synopower.club\/cs\/synology-vmm-pro-license\/\" target=\"_blank\" rel=\"noreferrer noopener\">Licence VMM Pro<\/a> a zdarma <a href=\"https:\/\/synopower.club\/cs\/virtual-dsm-vdsm-license-pack\/\" target=\"_blank\" rel=\"noreferrer noopener\">Virtual DSM<\/a> Nap\u0159\u00edklad ka\u017ed\u00fd hostitel n\u00e1m poskytuje replikovan\u00fd hosting chr\u00e1n\u011bn\u00fd snapshoty, spravovan\u00fd z jedin\u00e9 konzole. Ka\u017ed\u00fd host se d\u00e1 b\u011bhem n\u011bkolika minut vr\u00e1tit zp\u011bt a znovu sestavit na jin\u00e9m serveru z repliky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00edky tomu jsme tak\u00e9 poctiv\u00ed jako prodejci. Licence, kter\u00e9 prod\u00e1v\u00e1me, \u0159\u00edd\u00ed na\u0161i vlastn\u00ed firmu, tak\u017ee kdy\u017e se z\u00e1kazn\u00edk zept\u00e1, zda VMM Pro funguje v produk\u010dn\u00edm prost\u0159ed\u00ed, odpov\u011b\u010f najdete na str\u00e1nce, kterou pr\u00e1v\u011b \u010dtete.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a221f4eb wp-block-buttons-is-layout-flex\" style=\"border-style:none;border-width:0px;border-radius:0px;margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);padding-top:var(--wp--preset--spacing--40);padding-right:0;padding-bottom:var(--wp--preset--spacing--40);padding-left:0\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-palette-color-4-color has-luminous-vivid-amber-background-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/synopower.club\/cs\/synology-vmm-pro-license\/\" style=\"border-radius:15px\" target=\"_blank\" rel=\"noreferrer noopener\">Z\u00edskejte licenci VMM Pro<\/a><\/div>\n<\/div>\n\n\n\n<h2 id=\"synology-virtual-machine-cluster-limits-and-caveats\" class=\"wp-block-heading\">Omezen\u00ed a upozorn\u011bn\u00ed clusteru virtu\u00e1ln\u00edch stroj\u016f Synology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Replikovan\u00fd virtu\u00e1ln\u00ed stroj Synology je aktu\u00e1ln\u00ed jen tak, jak je aktu\u00e1ln\u00ed jeho pl\u00e1n. \u00dalo\u017ei\u0161t\u011b se replikuje ka\u017ed\u00fdch dvan\u00e1ct hodin, tak\u017ee v nejhor\u0161\u00edm p\u0159\u00edpad\u011b jej failover obnov\u00ed do stavu, v jak\u00e9m byl a\u017e o p\u016fl dne d\u0159\u00edve. To je cena za pohotovostn\u00ed re\u017eim a prvn\u00ed nastaven\u00ed, kter\u00e9 bychom zp\u0159\u00edsnili, pokud by vzrostl objem objedn\u00e1vek.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Studen\u00fd pohotovostn\u00ed re\u017eim tak\u00e9 znamen\u00e1, \u017ee konzole v\u017edy zobrazuje varov\u00e1n\u00ed o hostiteli, ke kter\u00e9mu se nem\u016f\u017ee dostat. To je sice designov\u011b funk\u010dn\u00ed, ne chyba, ale znamen\u00e1 to, \u017ee skute\u010dn\u00e1 varov\u00e1n\u00ed je snaz\u0161\u00ed p\u0159ehl\u00e9dnout. Ne\u017e varov\u00e1n\u00ed zav\u0159ete, zkontrolujte, \u010deho se t\u00fdk\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vysok\u00e1 dostupnost nen\u00ed z\u00e1loha. Replikace sama o sob\u011b tak\u00e9 nen\u00ed: chyba nebo malware uvnit\u0159 hosta tak\u00e9 zp\u016fsob\u00ed replikaci. Uchov\u00e1vejte uzam\u010den\u00e9 sn\u00edmky a kopii mimo hostitele, ke kter\u00e9 se m\u016f\u017eete vr\u00e1tit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kone\u010dn\u011b, VMM b\u011b\u017e\u00ed pouze na kompatibiln\u00edch modelech se svazky Btrfs a sm\u00ed\u0161en\u00fd hardware znamen\u00e1 sm\u00ed\u0161en\u00fd v\u00fdkon. Otestujte p\u0159evzet\u00ed slu\u017eeb p\u0159i selh\u00e1n\u00ed na nejmen\u0161\u00edm hostiteli v clusteru, proto\u017ee pr\u00e1v\u011b tam bude m\u00edt host probl\u00e9my jako prvn\u00ed.<\/p>\n\n\n\n<h2 id=\"frequently-asked-questions\" class=\"wp-block-heading\">\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">M\u016f\u017ee cluster virtu\u00e1ln\u00edch stroj\u016f Synology provozovat skute\u010dn\u00fd podnik?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ano. Toto \u00falo\u017ei\u0161t\u011b, mail relay a n\u011bkolik hostovan\u00fdch webov\u00fdch str\u00e1nek b\u011b\u017e\u00ed jako hostovan\u00e9 servery na clusteru Synology se t\u0159emi hostiteli a replikac\u00ed VMM Pro a funguj\u00ed tak ji\u017e m\u011bs\u00edce.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Kolik jednotek NAS pot\u0159ebuje cluster virtu\u00e1ln\u00edch stroj\u016f Synology?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Bezplatn\u00fd Virtual Machine Manager dok\u00e1\u017ee clusterovat a\u017e 7 hostitel\u016f. Vzd\u00e1len\u00e1 replikace vy\u017eaduje alespo\u0148 2 hostitele a vysok\u00e1 dostupnost alespo\u0148 3.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Pro\u010d nepou\u017e\u00edvat vysokou dostupnost se t\u0159emi hostiteli?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Vysok\u00e1 dostupnost vy\u017eaduje, aby se hostitel\u00e9 online dohodli na stavu clusteru. N\u00e1\u0161 t\u0159et\u00ed hostitel je studen\u00fd pohotovostn\u00ed re\u017eim, kter\u00fd je obvykle vypnut\u00fd, tak\u017ee m\u00edsto toho pou\u017e\u00edv\u00e1me pl\u00e1novanou replikaci a manu\u00e1ln\u00ed p\u0159epnut\u00ed p\u0159i selh\u00e1n\u00ed.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Pot\u0159ebuje replikace VMM Pro?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ano. Pl\u00e1ny ochrany se vzd\u00e1lenou replikac\u00ed jsou funkc\u00ed VMM Pro. Zdrojov\u00fd i c\u00edlov\u00fd hostitel tak\u00e9 pot\u0159ebuj\u00ed svazky Btrfs.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-5\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">M\u016f\u017ee virtu\u00e1ln\u00ed stroj Synology po failoveru b\u011b\u017eet na jin\u00e9m modelu?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ano, replika m\u016f\u017ee b\u00fdt spu\u0161t\u011bna na jin\u00e9m hostiteli v clusteru. Nastaven\u00ed vylad\u011bn\u00e1 uvnit\u0159 hosta pro v\u011bt\u0161\u00ed hostitel, jako nap\u0159\u00edklad limity pracovn\u00edch proces\u016f webov\u00e9ho serveru, m\u016f\u017ee b\u00fdt na men\u0161\u00edm hostiteli nutn\u00e9 sn\u00ed\u017eit.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-6\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Jak \u010dasto bych m\u011bl replikovat virtu\u00e1ln\u00ed po\u010d\u00edta\u010d?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>P\u0159izp\u016fsobte rozvrh mno\u017estv\u00ed dat, kter\u00e9 si host m\u016f\u017ee dovolit ztratit. Zanepr\u00e1zdn\u011bn\u00e9 hosty replikujeme ka\u017ed\u00fdch 12 hodin a klidn\u011bj\u0161\u00ed hosty jednou denn\u011b.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-7\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Po\u010d\u00edt\u00e1 se z\u00e1lo\u017en\u00ed hostitel do licence VMM Pro?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ano. Zapo\u010d\u00edtejte v\u0161echny hostitele, kte\u0159\u00ed se pod\u00edlej\u00ed na funkc\u00edch clusteru, v\u010detn\u011b z\u00e1lo\u017en\u00edho hostitele, kter\u00fd je obvykle vypnut\u00fd. Bal\u00ed\u010dek se 3 uzly pokr\u00fdv\u00e1 konfiguraci, jako je ta na\u0161e.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-8\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Jak\u00fd je nejv\u011bt\u0161\u00ed limit clusteru virtu\u00e1ln\u00edch stroj\u016f Synology?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Pam\u011b\u0165. Spu\u0161t\u011bn\u00e9 hostovan\u00e9 syst\u00e9my si rezervuj\u00ed pam\u011b\u0165 na hostiteli, tak\u017ee ka\u017ed\u00fd hostitel, kter\u00fd by mohl p\u0159ijmout hosta p\u0159epnut\u00e9ho k selh\u00e1n\u00ed, pot\u0159ebuje dostatek voln\u00e9 pam\u011bti, aby jej mohl obsadit.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 id=\"references-and-video-walkthroughs\" class=\"wp-block-heading\">Reference a video n\u00e1vody<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/kb.synology.com\/en-global\/DSM\/help\/Virtualization\/data_protection?version=7\" target=\"_blank\" rel=\"noreferrer noopener\">Ochrana v Virtual Machine Manager<\/a>, zahrnuj\u00edc\u00ed pl\u00e1ny ochrany, sn\u00edmky a vzd\u00e1lenou replikaci.<\/li>\n\n\n\n<li><a href=\"https:\/\/kb.synology.com\/en-global\/DSM\/help\/Virtualization\/ha?version=7\" target=\"_blank\" rel=\"noreferrer noopener\">Vysok\u00e1 dostupnost v Virtual Machine Manager<\/a>, v\u010detn\u011b po\u017eadavku na t\u0159i hostitele.<\/li>\n\n\n\n<li><a href=\"https:\/\/kb.synology.com\/en-global\/DSM\/help\/Virtualization\/hosts?version=7\" target=\"_blank\" rel=\"noreferrer noopener\">Spr\u00e1va cluster\u016f v Virtual Machine Manager<\/a>, o p\u0159id\u00e1v\u00e1n\u00ed a spr\u00e1v\u011b hostitel\u016f.<\/li>\n\n\n\n<li><a href=\"https:\/\/global.download.synology.com\/download\/Document\/Software\/WhitePaper\/Package\/Virtualization\/All\/enu\/Synology_VMM_White_Paper_enu.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Synology VMM b\u00edl\u00e1 kniha<\/a>, s pokyny pro n\u00e1vrh kvora, s\u00edt\u011b a clusteru.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.synology.com\/en-global\/products\/VMMPro_License_Pack\" target=\"_blank\" rel=\"noreferrer noopener\">Licen\u010dn\u00ed bal\u00ed\u010dek VMM Pro<\/a>, s vysv\u011btlen\u00edm bal\u00ed\u010dk\u016f pro 3 uzly a 7 uzl\u016f a licen\u010dn\u00edch podm\u00ednek.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e1vod k Virtual Machine Manager a pr\u016fvodce migrac\u00ed hostovan\u00fdch server\u016f na NAS serveru Synology. T\u0159et\u00ed video se zab\u00fdv\u00e1 produktem Synology High Availability, kter\u00fd zrcadl\u00ed cel\u00fd NAS server na identick\u00e9 pasivn\u00ed dvoj\u010de, co\u017e je u\u017eite\u010dn\u00e9 pro zn\u00e1zorn\u011bn\u00ed rozd\u00edl\u016f od cluster\u016f VMM.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Synology Virtual Machine Manager N\u00e1vod\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/l-qOXRUvBcc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Synology Virtual Machine Manager N\u00e1vod<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Jak migrovat virtu\u00e1ln\u00ed po\u010d\u00edta\u010d na Synology NAS! | 4K N\u00c1VOD\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/r6z5bTcsUjM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Jak migrovat virtu\u00e1ln\u00ed po\u010d\u00edta\u010d na Synology NAS<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Jak maximalizovat provozuschopnost s vysoce dostupn\u00fdm clusterem\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/HfPK2c-SiDU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Jak maximalizovat provozuschopnost s vysoce dostupn\u00fdm clusterem<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Budujete vlastn\u00ed cluster? Za\u010dn\u011bte s <a href=\"https:\/\/synopower.club\/cs\/synology-vmm-pro-license\/\" target=\"_blank\" rel=\"noreferrer noopener\">Licence VMM Pro<\/a> pro replikaci a migraci za provozu p\u0159idejte <a href=\"https:\/\/synopower.club\/cs\/virtual-dsm-vdsm-license-pack\/\" target=\"_blank\" rel=\"noreferrer noopener\">Virtual DSM licence<\/a> pro dal\u0161\u00ed hosty DSM nebo si prohl\u00e9dn\u011bte v\u0161echny licence na <a href=\"https:\/\/synopower.club\/cs\/\" target=\"_blank\" rel=\"noreferrer noopener\">SynoPower Club<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>A Synology virtual machine cluster is not just a lab toy. This store, our mail relay, our sister brand and several hosted websites all run as guests on three Synology NAS units joined in one Virtual Machine Manager cluster, protected by a VMM Pro license. Eight guests live on it today, seven of them running [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_xspeed_no_cache":false,"_xspeed_expiry_hours":0,"footnotes":""},"doc_category":[197,64],"doc_tag":[],"class_list":["post-19166","docs","type-docs","status-publish","hentry","doc_category-nas-hosting-101","doc_category-virtualization"],"year_month":"2026-11","word_count":2171,"total_views":"155","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Adair Hsu","author_nicename":"adairpk17","author_url":"https:\/\/synopower.club\/cs\/author\/adairpk17\/"},"doc_category_info":[{"term_name":"NAS Hosting 101","term_url":"https:\/\/synopower.club\/cs\/docs-category\/nas-hosting-101\/"},{"term_name":"VMM Pro &amp; Virtual DSM","term_url":"https:\/\/synopower.club\/cs\/docs-category\/virtualization\/"}],"doc_tag_info":[],"_links":{"self":[{"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/docs\/19166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/comments?post=19166"}],"version-history":[{"count":1,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/docs\/19166\/revisions"}],"predecessor-version":[{"id":21495,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/docs\/19166\/revisions\/21495"}],"wp:attachment":[{"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/media?parent=19166"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/doc_category?post=19166"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/synopower.club\/cs\/wp-json\/wp\/v2\/doc_tag?post=19166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}