{"id":33695,"date":"2026-10-07T18:13:05","date_gmt":"2026-10-07T16:13:05","guid":{"rendered":"https:\/\/eu.wedoback.com\/?page_id=33695"},"modified":"2026-10-08T13:09:46","modified_gmt":"2026-10-08T11:09:46","slug":"co-je-zaloha-dat","status":"publish","type":"page","link":"https:\/\/eu.wedoback.com\/cs\/pruvodci\/zalohovani\/co-je-zaloha-dat\/","title":{"rendered":"Co je z\u00e1loha dat?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"33695\" class=\"elementor elementor-33695 elementor-31913\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-26bb6ee e-con-full wdb-g e-flex e-con e-parent\" data-id=\"26bb6ee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e91bddf e-con-full wdb-g-hero e-flex e-con e-parent\" data-id=\"e91bddf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-275318b e-con-full wdb-g-hero-in e-flex e-con e-parent\" data-id=\"275318b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eb0a83e elementor-widget elementor-widget-text-editor\" data-id=\"eb0a83e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"wdb-g-crumb\"><a href=\"\/cs\/\">Dom\u016f<\/a><span>\u203a<\/span><a href=\"\/cs\/pruvodci\/\">Pr\u016fvodci<\/a><span>\u203a<\/span><a href=\"\/cs\/pruvodci\/zalohovani\/\">Z\u00e1lohov\u00e1n\u00ed dat<\/a><\/p><p class=\"wdb-g-pill\" style=\"--pill:#01adb9\">Z\u00e1lohov\u00e1n\u00ed dat<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65bff6e elementor-widget elementor-widget-heading\" data-id=\"65bff6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Co je z\u00e1loha dat?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7afb5a elementor-widget elementor-widget-text-editor\" data-id=\"e7afb5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"wdb-g-lead\">Z\u00e1loha dat je kopie dat po\u0159\u00edzen\u00e1 proto, aby ji bylo mo\u017en\u00e9 obnovit: v den, kdy origin\u00e1l zmiz\u00ed, je omylem zm\u011bn\u011bn nebo za\u0161ifrov\u00e1n \u00fato\u010dn\u00edkem, umo\u017en\u00ed vr\u00e1tit se k d\u0159\u00edv\u011bj\u0161\u00edmu stavu. Dokud nikdo neobnovil soubor a neov\u011b\u0159il, \u017ee jde otev\u0159\u00edt, m\u00e1te jen p\u0159enos dat, nikoli prok\u00e1zanou z\u00e1lohu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f3f598 elementor-widget elementor-widget-text-editor\" data-id=\"7f3f598\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"wdb-g-meta\"><span>Aktualizov\u00e1no v <b>\u0159\u00edjnu 2026<\/b><\/span><span><b>4 min<\/b> \u010dten\u00ed<\/span><span><b>5<\/b> citovan\u00fdch zdroj\u016f<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e556d5d e-con-full wdb-g-body e-flex e-con e-parent\" data-id=\"e556d5d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f1fbb44 e-con-full wdb-g-grid e-flex e-con e-parent\" data-id=\"f1fbb44\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f20a335 e-con-full wdb-g-article e-flex e-con e-parent\" data-id=\"f20a335\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-561e4b1 elementor-widget elementor-widget-text-editor\" data-id=\"561e4b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-key\"><h2>To hlavn\u00ed<\/h2><ul><li>Skute\u010dn\u00e1 z\u00e1loha je <strong>odd\u011blen\u00e1 od origin\u00e1lu<\/strong>, uchov\u00e1v\u00e1 <strong>v\u00edce verz\u00ed v \u010dase<\/strong> a obnovuje se podle zn\u00e1m\u00e9ho postupu.<\/li><li>ANSSI (francouzsk\u00e1 n\u00e1rodn\u00ed agentura pro kybernetickou bezpe\u010dnost) a CNIL (francouzsk\u00fd \u00fa\u0159ad pro ochranu osobn\u00edch \u00fadaj\u016f) doporu\u010duj\u00ed pravidlo <strong>3-2-1<\/strong>: t\u0159i kopie, dv\u011b r\u016fzn\u00e1 m\u00e9dia, z toho jedna offline.<\/li><li>RAID, synchronizace ani ko\u0161 Microsoft 365 nejsou z\u00e1lohy.<\/li><li>\u010cetnost z\u00e1loh ur\u010duje p\u0159ijatelnou ztr\u00e1tu dat (RPO); zp\u016fsob obnovy ur\u010duje dobu v\u00fdpadku (RTO).<\/li><li>Z\u00e1loha, kter\u00e1 nebyla nikdy obnovena nebo k n\u00ed\u017e byl ztracen kl\u00ed\u010d, nic neprokazuje.<\/li><\/ul><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1095655 elementor-widget elementor-widget-text-editor\" data-id=\"1095655\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Co mus\u00ed kopie umo\u017enit<\/h2><p>Z\u00e1lohu od pouh\u00e9ho duplik\u00e1tu odli\u0161uj\u00ed t\u0159i vlastnosti:<\/p><ol><li><strong>Je odd\u011blen\u00e1 od origin\u00e1lu.<\/strong> Druh\u00fd disk ve stejn\u00e9m serveru nebo ko\u0161 aplikace zas\u00e1hne stejn\u00fd po\u017e\u00e1r, stejn\u00fd v\u00fdpadek proudu a \u010dasto i stejn\u00fd ransomware. CNIL \u0159ad\u00ed ukl\u00e1d\u00e1n\u00ed z\u00e1loh na stejn\u00e9 m\u00edsto jako p\u016fvodn\u00ed data mezi chyby, kter\u00fdm je t\u0159eba se vyhnout.<\/li><li><strong>Uchov\u00e1v\u00e1 historii.<\/strong> Mus\u00ed b\u00fdt mo\u017en\u00e9 vr\u00e1tit se k \u00fater\u00fd 18:00, nejen k posledn\u00ed kopii, kter\u00e1 u\u017e m\u016f\u017ee obsahovat po\u0161kozen\u00fd soubor.<\/li><li><strong>Dok\u00e1\u017ee ji obnovit n\u011bkdo, kdo zn\u00e1 postup.<\/strong> M\u00e9dium, software, heslo i \u0161ifrovac\u00ed kl\u00ed\u010d mus\u00ed b\u00fdt k dispozici v den incidentu, nejen v den instalace. ANSSI po\u017eaduje, aby se z\u00e1lohy pravideln\u011b testovaly a aby byl seps\u00e1n a uplat\u0148ov\u00e1n postup obnovy.<\/li><\/ol><p>Z\u00e1lohovat lze soubory, datab\u00e1ze, po\u0161tovn\u00ed schr\u00e1nky nebo cel\u00fd po\u010d\u00edta\u010d (syst\u00e9m, aplikace, \u00fa\u010dty, nastaven\u00ed). P\u0159i obnov\u011b samotn\u00fdch soubor\u016f je nutn\u00e9 nejprve znovu nainstalovat server a teprve pak soubory vr\u00e1tit. Obnova obrazu syst\u00e9mu uvede po\u010d\u00edta\u010d zp\u011bt do provozu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb8c6f9 elementor-widget elementor-widget-text-editor\" data-id=\"bb8c6f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Pravidlo 3-2-1<\/h2><p>ANSSI i CNIL shodn\u011b doporu\u010duj\u00ed takzvan\u00e9 pravidlo \u201e3-2-1\u201c:<\/p><ul><li><strong>3<\/strong> kopie dat: produk\u010dn\u00ed data a dv\u011b z\u00e1lohy;<\/li><li><strong>2<\/strong> r\u016fzn\u00e1 m\u00e9dia;<\/li><li><strong>1<\/strong> kopie offline, tedy na m\u00e9diu odpojen\u00e9m od jak\u00e9hokoli informa\u010dn\u00edho syst\u00e9mu.<\/li><\/ul><figure class=\"wdb-f wdb-f-321\" role=\"img\" aria-label=\"Pravidlo 3-2-1: 3 kopie va\u0161ich dat, 2 r\u016fzn\u00e1 m\u00e9dia, 1 kopie offline\"><figcaption class=\"wdb-f-title\">Pravidlo 3-2-1<\/figcaption><div class=\"wdb-f-cols\"><div class=\"wdb-f-col\"><span class=\"wdb-f-num\">3<\/span><p>kopie va\u0161ich dat<\/p><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><rect x=\"20\" y=\"8\" width=\"30\" height=\"38\" rx=\"3\" fill=\"#e6f6f7\" stroke=\"#01adb9\" stroke-width=\"2\"\/><rect x=\"14\" y=\"13\" width=\"30\" height=\"38\" rx=\"3\" fill=\"#f3fbfb\" stroke=\"#01adb9\" stroke-width=\"2\"\/><rect x=\"8\" y=\"18\" width=\"30\" height=\"38\" rx=\"3\" fill=\"#fff\" stroke=\"#027466\" stroke-width=\"2.4\"\/><path d=\"M14 28h18M14 34h18M14 40h18M14 46h11\" stroke=\"#01adb9\" stroke-width=\"2.4\" stroke-linecap=\"round\"\/><\/svg><\/div><div class=\"wdb-f-col\"><span class=\"wdb-f-num\">2<\/span><p>r\u016fzn\u00e1 m\u00e9dia<\/p><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><rect x=\"6\" y=\"10\" width=\"34\" height=\"12\" rx=\"3\" fill=\"#027466\"\/><rect x=\"6\" y=\"25\" width=\"34\" height=\"12\" rx=\"3\" fill=\"#012e29\"\/><circle cx=\"33\" cy=\"16\" r=\"1.8\" fill=\"#01adb9\"\/><circle cx=\"33\" cy=\"31\" r=\"1.8\" fill=\"#01adb9\"\/><rect x=\"22\" y=\"34\" width=\"36\" height=\"24\" rx=\"4\" fill=\"#012e29\"\/><circle cx=\"40\" cy=\"46\" r=\"8\" fill=\"#e6f6f7\"\/><circle cx=\"40\" cy=\"46\" r=\"2.4\" fill=\"#027466\"\/><\/svg><\/div><div class=\"wdb-f-col\"><span class=\"wdb-f-num\">1<\/span><p>kopie offline<\/p><svg viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M16 40a11 11 0 0 1 2-21.8A15 15 0 0 1 46 20a10 10 0 0 1 2 20z\" fill=\"#cfeef0\" stroke=\"#01adb9\" stroke-width=\"2.4\" stroke-linejoin=\"round\"\/><path d=\"M8 8l48 48\" stroke=\"#027466\" stroke-width=\"3\" stroke-linecap=\"round\"\/><rect x=\"30\" y=\"38\" width=\"24\" height=\"18\" rx=\"3\" fill=\"#012e29\"\/><path d=\"M35 38v-5a7 7 0 0 1 14 0v5\" fill=\"none\" stroke=\"#012e29\" stroke-width=\"3\"\/><circle cx=\"42\" cy=\"47\" r=\"2.6\" fill=\"#fff\"\/><\/svg><\/div><\/div><p class=\"wdb-f-note\">Doporu\u010den\u00ed ANSSI a CNIL (Francie)<\/p><\/figure><p>ANSSI pova\u017euje tuto offline kopii za nezbytnou, i kdy\u017e se po\u0159izuje m\u00e9n\u011b \u010dasto ne\u017e ostatn\u00ed. Podrobn\u00fd v\u00fdpo\u010det najdete v \u010dl\u00e1nku <a href=\"\/cs\/pruvodci\/zalohovani\/kolik-zaloh-uchovavat\/\">Kolik z\u00e1loh je t\u0159eba uchov\u00e1vat?<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea1ae4a elementor-widget elementor-widget-text-editor\" data-id=\"ea1ae4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>T\u0159i pojmy, kter\u00e9 se \u010dasto zam\u011b\u0148uj\u00ed<\/h2><table><thead><tr><th>Operace<\/th><th>\u00da\u010del<\/th><th>Historie<\/th><\/tr><\/thead><tbody><tr><td>Z\u00e1lohov\u00e1n\u00ed<\/td><td>Vr\u00e1tit se k d\u0159\u00edv\u011bj\u0161\u00edmu stavu<\/td><td>Ano, v\u00edce verz\u00ed v \u010dase<\/td><\/tr><tr><td>Replikace<\/td><td>M\u00edt okam\u017eit\u011b t\u00e9m\u011b\u0159 identickou kopii<\/td><td>Obvykle ne: kopie kop\u00edruje origin\u00e1l v\u010detn\u011b jeho chyb<\/td><\/tr><tr><td>Archivace<\/td><td>Dlouhodob\u011b uchovat d\u016fkaz nebo dokument<\/td><td>Ano, ale c\u00edlem je uchov\u00e1n\u00ed, nikoli obnoven\u00ed provozu n\u00e1sleduj\u00edc\u00ed den<\/td><\/tr><\/tbody><\/table><p>Podrobnosti najdete v \u010dl\u00e1nc\u00edch <a href=\"\/cs\/pruvodci\/zalohovani\/rozdil-zalohovani-a-replikace\/\">z\u00e1lohov\u00e1n\u00ed a replikace<\/a> a <a href=\"\/cs\/pruvodci\/zalohovani\/rozdil-zalohovani-a-archivace\/\">z\u00e1lohov\u00e1n\u00ed a archivace<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5828722 elementor-widget elementor-widget-text-editor\" data-id=\"5828722\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>\u00dapln\u00e1, p\u0159\u00edr\u016fstkov\u00e1, rozd\u00edlov\u00e1<\/h2><p>Rozli\u0161uj\u00ed se t\u0159i metody:<\/p><ul><li><strong>\u00dapln\u00e1<\/strong>: zkop\u00edruje se v\u0161e. Obnova je jednoduch\u00e1. Zabere v\u0161ak \u010das i m\u00edsto.<\/li><li><strong>P\u0159\u00edr\u016fstkov\u00e1<\/strong>: kop\u00edruj\u00ed se jen zm\u011bny od posledn\u00ed z\u00e1lohy jak\u00e9hokoli typu. Je nen\u00e1ro\u010dn\u00e1. Obnova p\u0159ehraje \u00faplnou z\u00e1lohu a pot\u00e9 ka\u017ed\u00fd p\u0159\u00edr\u016fstek.<\/li><li><strong>Rozd\u00edlov\u00e1<\/strong>: kop\u00edruj\u00ed se zm\u011bny od posledn\u00ed \u00fapln\u00e9 z\u00e1lohy. V pr\u016fb\u011bhu t\u00fddne nar\u016fst\u00e1. Obnova p\u0159ehraje \u00faplnou z\u00e1lohu a posledn\u00ed rozd\u00edlovou.<\/li><\/ul><p>CNIL doporu\u010duje kombinovat denn\u00ed p\u0159\u00edr\u016fstkov\u00e9 z\u00e1lohy s pravideln\u00fdmi \u00fapln\u00fdmi z\u00e1lohami.<\/p><p>\u010cetnost ur\u010duje <strong>RPO<\/strong> (kolik pr\u00e1ce jste ochotni ud\u011blat znovu). Doba obnovy ur\u010duje <strong>RTO<\/strong> (jak dlouho m\u016f\u017ee provoz st\u00e1t). ANSSI hovo\u0159\u00ed o maxim\u00e1ln\u00ed p\u0159\u00edpustn\u00e9 ztr\u00e1t\u011b dat a maxim\u00e1ln\u00ed p\u0159\u00edpustn\u00e9 dob\u011b p\u0159eru\u0161en\u00ed. Ob\u011b lh\u016fty se vol\u00ed pro ka\u017edou \u010dinnost zvl\u00e1\u0161\u0165: p\u00e1te\u010dn\u00ed ve\u010dern\u00ed \u00fa\u010detnictv\u00ed a pokladn\u00ed server v sobotu v poledne nemaj\u00ed stejn\u00e9 RPO. Viz <a href=\"\/cs\/pruvodci\/drp-bcp\/co-je-rto\/\">Co je RTO?<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c12e38 elementor-widget elementor-widget-text-editor\" data-id=\"8c12e38\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Co z\u00e1loha nezajist\u00ed<\/h2><p>Nenahrazuje antivirus, firewall ani odd\u011blen\u00e9 \u00fa\u010dty spr\u00e1vc\u016f. Neudr\u017e\u00ed slu\u017ebu v chodu b\u011bhem v\u00fdpadku: to je \u00fakolem pl\u00e1nu obnovy po hav\u00e1rii (DRP) nebo pl\u00e1nu kontinuity \u010dinnost\u00ed (BCP). Sama o sob\u011b neprokazuje spln\u011bn\u00ed z\u00e1konn\u00e9 povinnosti uchov\u00e1v\u00e1n\u00ed: \u00fa\u010detn\u00ed doklad, kter\u00fd je nutn\u00e9 uchov\u00e1vat po dobu stanovenou pr\u00e1vem va\u0161\u00ed zem\u011b, spad\u00e1 pod archivaci s vlastn\u00edmi pravidly integrity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9539d3 elementor-widget elementor-widget-text-editor\" data-id=\"d9539d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>\u010cast\u00e9 chyby<\/h2><ul><li>Myslet si, \u017ee RAID je z\u00e1loha. RAID chr\u00e1n\u00ed p\u0159ed selh\u00e1n\u00edm disku. Zkop\u00edruje ale i smaz\u00e1n\u00ed a \u0161kodliv\u00e9 \u0161ifrov\u00e1n\u00ed.<\/li><li>Z\u00e1lohovat na sd\u00edlenou slo\u017eku, kterou mohou u\u017eivatel\u00e9 a spr\u00e1vci smazat.<\/li><li>Nech\u00e1vat z\u00e1lohovac\u00ed disk trvale p\u0159ipojen\u00fd. ENISA, Agentura Evropsk\u00e9 unie pro kybernetickou bezpe\u010dnost, po\u017eaduje uchov\u00e1vat z\u00e1lohy odd\u011blen\u011b od produkce: kdy\u017e m\u00e9dium nepou\u017e\u00edv\u00e1te, odpojte ho od po\u010d\u00edta\u010de \u010di s\u00edt\u011b.<\/li><li>Nikdy neobnovovat. Z\u00e1loha, k n\u00ed\u017e byl ztracen kl\u00ed\u010d nebo jej\u00ed\u017e software u\u017e neexistuje, nic nevr\u00e1t\u00ed.<\/li><li>Zapom\u00ednat na cloudovou po\u0161tu. Microsoft 365 a Google Workspace e-maily hostuj\u00ed, ale neuchov\u00e1vaj\u00ed jejich nez\u00e1vislou neomezenou historii: v Exchange Online lze smazanou polo\u017eku ve v\u00fdchoz\u00edm nastaven\u00ed obnovit 14 dn\u00ed, nejv\u00fd\u0161e 30 dn\u00ed.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c4a112 elementor-widget elementor-widget-text-editor\" data-id=\"8c4a112\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Kontroln\u00ed seznam: m\u00e1te skute\u010dnou z\u00e1lohu?<\/h2><ul><li>Existuje kopie mimo server a mimo budovu.<\/li><li>Alespo\u0148 jednu kopii nelze smazat b\u011b\u017en\u00fdm pracovn\u00edm \u00fa\u010dtem.<\/li><li>K dispozici je v\u00edce verz\u00ed, nejen ta z posledn\u00ed noci.<\/li><li>Ne\u00fasp\u011b\u0161n\u00e1 z\u00e1loha spust\u00ed upozorn\u011bn\u00ed, kter\u00e9 si n\u011bkdo p\u0159e\u010dte.<\/li><li>V posledn\u00edch t\u0159ech m\u011bs\u00edc\u00edch byl obnoven a otev\u0159en soubor.<\/li><li>\u0160ifrovac\u00ed kl\u00ed\u010d je ulo\u017een jinde ne\u017e na z\u00e1lohovan\u00e9m po\u010d\u00edta\u010di.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbca245 elementor-widget elementor-widget-text-editor\" data-id=\"cbca245\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-brand\"><h2>Jak to \u0159e\u0161\u00ed WeDoBack<\/h2><p>WeDoBack z\u00e1lohuje servery Windows a Linux, fyzick\u00e9 i virtu\u00e1ln\u00ed, pracovn\u00ed stanice Windows a macOS, NAS a po\u0161tu Microsoft 365 nebo Google Workspace. Data jsou \u0161ifrov\u00e1na p\u0159\u00edmo na po\u010d\u00edta\u010di z\u00e1kazn\u00edka kl\u00ed\u010dem, kter\u00fd m\u00e1 pouze z\u00e1kazn\u00edk, a pot\u00e9 ulo\u017eena na serverech vyhrazen\u00fdch pro z\u00e1lohov\u00e1n\u00ed, odd\u011blen\u00fdch od jeho produkce a redundantn\u00edch. Obnovit lze jednotliv\u00e9 soubory i cel\u00fd server v\u010detn\u011b syst\u00e9mu a aplikac\u00ed. \u010cetnost a dobu uchov\u00e1v\u00e1n\u00ed lze nastavit v r\u00e1mci objednan\u00e9ho objemu. Nab\u00eddky <a href=\"\/cs\/nabidka-smart\/\">SMART<\/a> a <a href=\"\/cs\/nabidka-integral\/\">INTEGRAL<\/a> jsou podrobn\u011b pops\u00e1ny na str\u00e1nce <a href=\"\/cs\/nabidky-a-ceny\/\">nab\u00eddky a ceny<\/a>.<\/p><div class=\"wdb-g-btns\"><a class=\"wdb-g-btn wdb-g-btn-primary\" href=\"\/cs\/nabidky-a-ceny\/\">Zobrazit nab\u00eddky a ceny<\/a><a class=\"wdb-g-btn wdb-g-btn-ghost\" href=\"\/cs\/cenova-nabidka\/\">Vy\u017e\u00e1dat cenovou nab\u00eddku<\/a><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c62244 elementor-widget elementor-widget-text-editor\" data-id=\"4c62244\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-faq\"><h2>\u010cast\u00e9 dotazy<\/h2><details><summary>Sta\u010d\u00ed jako z\u00e1loha RAID nebo druh\u00fd disk?<\/summary><p>Ne. RAID chr\u00e1n\u00ed p\u0159ed selh\u00e1n\u00edm disku, ne p\u0159ed smaz\u00e1n\u00edm, po\u017e\u00e1rem nebo ransomwarem: chybu okam\u017eit\u011b zkop\u00edruje na v\u0161echny disky. Z\u00e1loha mus\u00ed b\u00fdt na jin\u00e9m m\u00e9diu, na jin\u00e9m m\u00edst\u011b a s histori\u00ed verz\u00ed.<\/p><\/details><details><summary>Jak \u010dasto je t\u0159eba z\u00e1lohovat?<\/summary><p>\u010cetnost z\u00e1vis\u00ed na tom, kolik pr\u00e1ce jste ochotni ud\u011blat znovu. U v\u011bt\u0161iny server\u016f mal\u00fdch a st\u0159edn\u00edch firem je minimem jedna z\u00e1loha denn\u011b; datab\u00e1ze, do kter\u00e9 se zapisuje pr\u016fb\u011b\u017en\u011b, jich vy\u017eaduje n\u011bkolik. CNIL, francouzsk\u00fd \u00fa\u0159ad pro ochranu osobn\u00edch \u00fadaj\u016f, doporu\u010duje denn\u00ed p\u0159\u00edr\u016fstkov\u00e9 z\u00e1lohy a v pravideln\u00fdch intervalech z\u00e1lohy \u00fapln\u00e9.<\/p><\/details><details><summary>Z\u00e1lohuj\u00ed Microsoft 365 nebo Google Workspace moje e-maily?<\/summary><p>Hostuj\u00ed a chr\u00e1n\u00ed slu\u017ebu, ale jejich ko\u0161e maj\u00ed omezenou dobu uchov\u00e1n\u00ed. V Exchange Online lze smazan\u00e9 polo\u017eky ve v\u00fdchoz\u00edm nastaven\u00ed obnovit 14 dn\u00ed, nejv\u00fd\u0161e 30 dn\u00ed. Po t\u00e9to dob\u011b, nebo pokud je kompromitov\u00e1n \u00fa\u010det spr\u00e1vce, se lze vr\u00e1tit zp\u011bt jen d\u00edky kopii mimo tenant.<\/p><\/details><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f45574 elementor-widget elementor-widget-text-editor\" data-id=\"1f45574\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Dal\u0161\u00ed \u010dten\u00ed<\/h2><div class=\"wdb-g-related\"><a href=\"\/cs\/pruvodci\/zalohovani\/strategie-zalohovani-pro-msp\/\"><small>Z\u00e1lohov\u00e1n\u00ed dat<\/small>Jak\u00e1 strategie z\u00e1lohov\u00e1n\u00ed pro malou a st\u0159edn\u00ed firmu?<\/a><a href=\"\/cs\/pruvodci\/zalohovani\/jak-otestovat-zalohu\/\"><small>Z\u00e1lohov\u00e1n\u00ed dat<\/small>Jak otestovat, \u017ee z\u00e1loha funguje?<\/a><a href=\"\/cs\/pruvodci\/drp-bcp\/co-je-rpo\/\"><small>DRP a BCP<\/small>Co je RPO?<\/a><a href=\"\/cs\/pruvodci\/zalohovani\/kde-ukladat-zalohy\/\"><small>Z\u00e1lohov\u00e1n\u00ed dat<\/small>Kde ukl\u00e1dat z\u00e1lohy?<\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-499291b elementor-widget elementor-widget-text-editor\" data-id=\"499291b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-sources\"><h2>Zdroje<\/h2><p class=\"wdb-g-src-date\">Dokumenty ov\u011b\u0159eny v \u0159\u00edjnu 2026.<\/p><ol><li><a href=\"https:\/\/messervices.cyber.gouv.fr\/documents-guides\/anssi_fondamentaux_sauvegarde_systemes_dinformation_v1.1.pdf\" target=\"_blank\" rel=\"noopener\">Z\u00e1lohov\u00e1n\u00ed informa\u010dn\u00edch syst\u00e9m\u016f \u2013 Z\u00e1klady (ANSSI-BP-100, v1.1, 27. listopadu 2025, ve francouz\u0161tin\u011b)<\/a> \u2014 ANSSI (francouzsk\u00e1 agentura)<\/li><li><a href=\"https:\/\/www.enisa.europa.eu\/publications\/cybersecurity-guide-for-smes\" target=\"_blank\" rel=\"noopener\">Cybersecurity guide for SMEs \u2013 12 steps to securing your business (krok 9: z\u00e1lohy, v angli\u010dtin\u011b)<\/a> \u2014 ENISA (Evropsk\u00e1 unie)<\/li><li><a href=\"https:\/\/www.cnil.fr\/fr\/securite-sauvegarder\" target=\"_blank\" rel=\"noopener\">Bezpe\u010dnost: Z\u00e1lohov\u00e1n\u00ed (ve francouz\u0161tin\u011b)<\/a> \u2014 CNIL (francouzsk\u00fd \u00fa\u0159ad)<\/li><li><a href=\"https:\/\/learn.microsoft.com\/en-us\/exchange\/security-and-compliance\/recoverable-items-folder\/recoverable-items-folder\" target=\"_blank\" rel=\"noopener\">Recoverable Items folder in Exchange Online<\/a> \u2014 Microsoft Learn<\/li><li><a href=\"https:\/\/www.wedoback.com\/offres-et-tarifs\/\" target=\"_blank\" rel=\"noopener\">Nab\u00eddky a ceny<\/a> \u2014 WeDoBack<\/li><\/ol><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-01b4cf0 e-con-full wdb-g-aside e-flex e-con e-parent\" data-id=\"01b4cf0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-959277c elementor-widget elementor-widget-text-editor\" data-id=\"959277c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<nav class=\"wdb-g-toc\" aria-label=\"Obsah\"><p>Na t\u00e9to str\u00e1nce<\/p><ol><\/ol><\/nav>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1a2259 elementor-widget elementor-widget-text-editor\" data-id=\"b1a2259\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-card\"><h3>Pl\u00e1nujete projekt z\u00e1lohov\u00e1n\u00ed, DRP nebo BCP?<\/h3><p>V\u00edce ne\u017e 20 let zku\u0161enost\u00ed s ochranou firemn\u00edch dat.<\/p><a class=\"wdb-g-btn wdb-g-btn-primary\" href=\"\/cs\/cenova-nabidka\/\">Vy\u017e\u00e1dat cenovou nab\u00eddku<\/a><a class=\"wdb-g-tel\" href=\"tel:+33972507828\">+33 9 72 50 78 28<\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-621585c e-con-full wdb-g-aside e-flex e-con e-parent\" data-id=\"621585c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58f1acc elementor-widget elementor-widget-text-editor\" data-id=\"58f1acc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<nav class=\"wdb-g-toc\" aria-label=\"Obsah\"><p>Na t\u00e9to str\u00e1nce<\/p><ol><\/ol><\/nav>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c2c410 elementor-widget elementor-widget-text-editor\" data-id=\"1c2c410\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"wdb-g-card\"><h3>Pl\u00e1nujete projekt z\u00e1lohov\u00e1n\u00ed, DRP nebo BCP?<\/h3><p>V\u00edce ne\u017e 20 let zku\u0161enost\u00ed s ochranou firemn\u00edch dat.<\/p><a class=\"wdb-g-btn wdb-g-btn-primary\" href=\"\/cs\/cenova-nabidka\/\">Vy\u017e\u00e1dat cenovou nab\u00eddku<\/a><a class=\"wdb-g-tel\" href=\"tel:+33972507828\">+33 9 72 50 78 28<\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62856a0 e-con-full wdb-g-cta e-flex e-con e-parent\" data-id=\"62856a0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-040e8da e-con-full wdb-g-cta-in e-flex e-con e-parent\" data-id=\"040e8da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2b5ffb5 elementor-widget elementor-widget-text-editor\" data-id=\"2b5ffb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Chra\u0148te sv\u00e1 data s WeDoBack<\/h2><p>\u0160ifrovan\u00e9 z\u00e1lohov\u00e1n\u00ed mimo pracovi\u0161t\u011b, nem\u011bnn\u00e9 \u00falo\u017ei\u0161t\u011b, DRP a BCP: popi\u0161te n\u00e1m sv\u00e9 servery a my v\u00e1m navrhneme vhodnou kombinaci.<\/p><div class=\"wdb-g-btns\"><a class=\"wdb-g-btn wdb-g-btn-primary\" href=\"\/cs\/cenova-nabidka\/\">Vy\u017e\u00e1dat cenovou nab\u00eddku<\/a><a class=\"wdb-g-btn wdb-g-btn-ghost\" href=\"\/cs\/nabidky-a-ceny\/\">Zobrazit nab\u00eddky a ceny<\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":33590,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_seopress_titles_title":"Co je z\u00e1loha dat: definice a kl\u00ed\u010dov\u00e1 pravidla | WeDoBack","_seopress_titles_desc":"Z\u00e1loha je obnoviteln\u00e1 kopie odd\u011blen\u00e1 od origin\u00e1lu, kter\u00e1 umo\u017en\u00ed vr\u00e1tit se k d\u0159\u00edv\u011bj\u0161\u00edmu stavu po poru\u0161e, chyb\u011b nebo \u00fatoku.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"https:\/\/www.wedoback.com\/wp-content\/uploads\/sites\/6\/2026\/10\/wdb-og-sauvegarde.jpg","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"https:\/\/www.wedoback.com\/wp-content\/uploads\/sites\/6\/2026\/10\/wdb-og-sauvegarde.jpg","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":"","_members_access_role":[],"_members_access_error":""},"class_list":["post-33695","page","type-page","status-publish","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/pages\/33695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/comments?post=33695"}],"version-history":[{"count":1,"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/pages\/33695\/revisions"}],"predecessor-version":[{"id":35328,"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/pages\/33695\/revisions\/35328"}],"up":[{"embeddable":true,"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/pages\/33590"}],"wp:attachment":[{"href":"https:\/\/eu.wedoback.com\/cs\/wp-json\/wp\/v2\/media?parent=33695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}