{"id":3816,"date":"2019-03-01T14:26:18","date_gmt":"2019-03-01T13:26:18","guid":{"rendered":"http:\/\/milchyn.cz\/?page_id=3816"},"modified":"2025-09-23T02:08:09","modified_gmt":"2025-09-23T02:08:09","slug":"o-diskovem-raidu","status":"publish","type":"page","link":"https:\/\/milchyn.cz\/o-diskovem-raidu","title":{"rendered":"O diskov\u00e9m RAIDu"},"content":{"rendered":"<div style=\"position: absolute; margin-left: 84vw; margin-top: -9vw;\"><img decoding=\"async\" class=\"size-medium alignright\" style=\"width: 8vw;\" src=\"http:\/\/milchyn.cz\/wp-content\/uploads\/2021\/10\/RAID-e1635683244619.png\" \/><\/div>\n\n<h3><a id=\"obecn\u011b_o_raidu\"><\/a><a href=\"#\" class=\"mch-gototop\" onclick=\"window.scrollTo({top: 0, behavior: 'smooth'}); return false;\">\u21a9\ufe0f\ufe0f<\/a> Obecn\u011b o RAIDu<\/h3>\n<a id=\"001\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-7\">Co je RAID?<\/div><div id=\"mch-acr-content-7\" class=\"mch-acr-content\" hidden><\/p>\n<p>RAID <em>(&#8222;Redundant Array of Independent Disks&#8220;)<\/em> je technologie <strong>propojen\u00ed v\u00edce pevn\u00fdch disk\u016f do jednoho celku<\/strong>. D\u016fraz se klade p\u0159edev\u0161\u00edm na <strong data-start=\"350\" data-end=\"366\" data-is-only-node=\"\">spolehlivost<\/strong> ukl\u00e1d\u00e1n\u00ed a \u010dten\u00ed dat, ale tak\u00e9 na <strong>v\u00fdkon<\/strong> a <strong>kapacitu \u00falo\u017ei\u0161t\u011b<\/strong> <em>(podle typu RAID)<\/em>. Tato technologie se objevuje <strong>v diskov\u00fdch \u00falo\u017ei\u0161t\u00edch<\/strong> zn\u00e1m\u00e9 jako <strong>NAS<\/strong> <em>(&#8222;Network Attached Storage&#8220;)<\/em>, v serverech a dokonce v dom\u00e1c\u00edch po\u010d\u00edta\u010d\u00edch.<\/p>\n<p><\/div><\/div>\n<a id=\"jakou_m\u00e1_kl\u00ed\u010dovou_vlastnost\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-8\">Jakou m\u00e1 kl\u00ed\u010dovou vlastnost?<\/div><div id=\"mch-acr-content-8\" class=\"mch-acr-content\" hidden><\/p>\n<p><strong>Nep\u0159ij\u00edt o \u010derstv\u00e9 zm\u011bny v datech na disku p\u0159i jeho z\u00e1vad\u011b<\/strong>\u00a0<em>(bez v\u00fdpadku d\u00edky jednomu \u010di v\u00edce z\u00e1stupn\u00fdch disk\u016f dle typu RAID)<\/em>.<\/p>\n<p>\u26a0\ufe0f<strong> Nezam\u011b\u0148ovat s funkc\u00ed z\u00e1lohy<\/strong> \u26a0\ufe0f<\/p>\n<p><\/div><\/div>\n<a id=\"jak_u\u017eivatel_pozn\u00e1_z\u00e1vadu_disku\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-9\">Jak u\u017eivatel pozn\u00e1 z\u00e1vadu disku?<\/div><div id=\"mch-acr-content-9\" class=\"mch-acr-content\" hidden><\/p>\n<p>V podstat\u011b, dokud je v RAID skupin\u011b disk\u016f p\u0159i z\u00e1vad\u011b je\u0161t\u011b disk z\u00e1stupn\u00fd, u\u017eivatel nic nepozn\u00e1. Proto je pot\u0159eba pou\u017e\u00edvat funkci automatick\u00e9ho odes\u00edl\u00e1n\u00ed emailu p\u0159i z\u00e1vad\u011b disku.<\/p>\n<p><\/div><\/div>\n<a id=\"jak_prob\u00edh\u00e1_oprava_raid_pole\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-10\">Jak prob\u00edh\u00e1 oprava RAID pole?<\/div><div id=\"mch-acr-content-10\" class=\"mch-acr-content\" hidden><\/p>\n<p>To je individu\u00e1ln\u00ed, z\u00e1visle na proveden\u00ed RAID \u00falo\u017ei\u0161t\u011b jako celku. N\u011bkde sta\u010d\u00ed vyjmout vadn\u00fd disk a vlo\u017eit nov\u00fd, kdy o v\u0161e ostatn\u00ed je automaticky postar\u00e1no a jinde je pot\u0159eba konfigura\u010dn\u00edho za\u010dlen\u011bn\u00ed jako nap\u0159\u00edklad u hol\u00e9 implementace s mdadm. Ka\u017edop\u00e1dn\u011b s v\u00fdm\u011bnou vadn\u00e9ho disku neot\u00e1let. Po n\u00e1hrad\u011b disku za\u010dne za\u010dle\u0148ovac\u00ed proces<em> (zrcadlen\u00ed, nebo pln\u011bn\u00ed paritn\u00ed informac\u00ed)<\/em>, kter\u00fd tak\u00e9 n\u011bjakou dobu trv\u00e1. A\u017e potom je RAID op\u011bt odoln\u00fd z\u00e1vad\u011b disku.<\/p>\n<p><\/div><\/div>\n<a id=\"jak\u00e9_jsou_typy_raid\u016f\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-11\">Jak\u00e9 jsou typy RAID\u016f?<\/div><div id=\"mch-acr-content-11\" class=\"mch-acr-content\" hidden><\/p>\n<p>I kdy\u017e RAID m\u016f\u017ee b\u00fdt <strong>implementov\u00e1n <\/strong>jako<strong> hardwarov\u00fd<\/strong> <em>(nap\u0159\u00edklad pomoc\u00ed RAID \u0159adi\u010d\u016f integrovan\u00fdch na z\u00e1kladn\u00edch desk\u00e1ch nebo jako samostatn\u00e9 PCI karty)<\/em> nebo <strong>softwarov\u00fd<\/strong><em> (v Linuxu integrovan\u00fd do j\u00e1dra) <\/em>nebo <strong>obsa\u017een\u00fd i v n\u011bkter\u00fdch filesyst\u00e9mech<\/strong><em> (Btrfs, ZFS, &#8230;)<\/em>, tak z\u00e1kladn\u00ed <strong>vlastnosti RAIDu jsou d\u00e1ny jeho typem<\/strong>:<\/p>\n<table style=\"height: 110px;width: 100%;border-collapse: separate;border-spacing: 1vw 2vw\">\n<tbody>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong data-start=&quot;824&quot; data-end=&quot;834&quot;&gt;RAID 0&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 data se ukl\u00e1daj\u00ed nap\u0159\u00ed\u010d disky <em>(Striping)<\/em><br \/>\n\ud83d\udca1 ka\u017ed\u00fd soubor je rozd\u011blen na \u010d\u00e1sti, kter\u00e9 se zapisuj\u00ed st\u0159\u00eddav\u011b na v\u0161echny disky<br \/>\n\ud83d\udca1 minim\u00e1ln\u00ed po\u010det disk\u016f: 2<br \/>\n\ud83d\udca1 sporn\u00fd RAID typ, nespl\u0148uje redundantn\u00ed funkci<br \/>\n\u26a0\ufe0f \u017e\u00e1dn\u00e1 ochrana dat<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vysok\u00fd v\u00fdkon p\u0159i \u010dten\u00ed i z\u00e1pisu<br \/>\n\u2705 kapacity disk\u016f se s\u010d\u00edtaj\u00ed<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5\u00a0 nezabezpe\u010den\u00fd, \u017e\u00e1dn\u00e9 zrcadlen\u00ed \u26a0\ufe0f<br \/>\n\ud83d\udfe5\u00a0 sel\u017ee-li jeden disk, v\u0161echna data jsou ztracena<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 1&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 data se zrcadl\u00ed <em>(kop\u00edruj\u00ed)<\/em> na v\u0161echny disky<em> (Mirroring)<\/em><br \/>\n\ud83d\udca1 ka\u017ed\u00fd disk je p\u0159esnou kopi\u00ed ostatn\u00edch<br \/>\n\ud83d\udca1 minim\u00e1ln\u00ed po\u010det disk\u016f: 2<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vysok\u00e1 spolehlivost<br \/>\n\u2705 p\u0159i selh\u00e1n\u00ed disk\u016f jsou data dostupn\u00e1 do posledn\u00edho funk\u010dn\u00edho disku<br \/>\n\u2705 vysok\u00fd v\u00fdkon p\u0159i \u010dten\u00ed <em>(\u010dte paraleln\u011b)<\/em><\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 z\u00e1pis je pomalej\u0161\u00ed (zapisuje se na v\u0161echny disky)<br \/>\n\ud83d\udfe5 v\u00fdsledn\u00e1 kapacita je d\u00e1na kapacitou nejmen\u0161\u00edho z disk\u016f<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 4&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 data se ukl\u00e1daj\u00ed nap\u0159\u00ed\u010d disky, ale s paritou na samostatn\u00e9m disku\u00a0<em>(Striping se separatn\u00ed paritou)<\/em><br \/>\n\ud83d\udca1 minim\u00e1ln\u00ed po\u010det disk\u016f: 3<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vy\u0161\u0161\u00ed spolehlivost<br \/>\n\u2705 ochrana proti v\u00fdpadku jednoho disku<br \/>\n\u2705 Dobr\u00e1 rychlost \u010dten\u00ed<br \/>\n\u2705 kapacita je sou\u010det kapacit stejn\u00fdch disk\u016f, ale o kapacitu jednoho disku men\u0161\u00ed<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 z\u00e1pis kv\u016fli v\u00fdpo\u010dtu parity a ukl\u00e1dan\u00ed separ\u00e1tn\u011b je pomalej\u0161\u00ed<br \/>\n\ud83d\udfe5 minim\u00e1ln\u00ed po\u010det disk\u016f: 3<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 5&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 data dopln\u011bna o paritu se ukl\u00e1daj\u00ed nap\u0159\u00ed\u010d disky<em> (Striping s paritou)<\/em><br \/>\n\ud83d\udca1 minim\u00e1ln\u00ed po\u010det disk\u016f: 3<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vy\u0161\u0161\u00ed spolehlivost<br \/>\n\u2705 ochrana proti v\u00fdpadku jednoho disku<br \/>\n\u2705 Dobr\u00e1 rychlost \u010dten\u00ed<br \/>\n\u2705 kapacita je sou\u010det kapacit stejn\u00fdch disk\u016f, ale o kapacitu jednoho disku men\u0161\u00ed<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 z\u00e1pis je kv\u016fli v\u00fdpo\u010dtu parity pomalej\u0161\u00ed<br \/>\n\ud83d\udfe5 minim\u00e1ln\u00ed po\u010det disk\u016f: 3<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 6&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 data dopln\u011bna o dv\u011b parity se ukl\u00e1daj\u00ed nap\u0159\u00ed\u010d disky<em> (Striping s paritou)<\/em><br \/>\n\ud83d\udca1 minim\u00e1ln\u00ed po\u010det disk\u016f: 4<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vy\u0161\u0161\u00ed spolehlivost ne\u017e RAID 5<br \/>\n\u2705 ochrana proti v\u00fdpadku dvou disku<br \/>\n\u2705 Dobr\u00e1 rychlost \u010dten\u00ed<br \/>\n\u2705 kapacita je sou\u010det kapacit stejn\u00fdch disk\u016f, ale o kapacitu dvou disk\u016f men\u0161\u00ed<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 z\u00e1pis je kv\u016fli v\u00fdpo\u010dtu dvou parity pomalej\u0161\u00ed ne\u017e u RAID 5<br \/>\n\ud83d\udfe5 minim\u00e1ln\u00ed po\u010det disk\u016f: 4<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 10&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 disky se rozd\u011bl\u00ed na zrcadlen\u00e9 p\u00e1ry<em> (RAID 1)<\/em> a potom se tyto p\u00e1ry spoj\u00ed stripingem <em>(RAID 0)<\/em><br \/>\n\ud83d\udca1 sud\u00fd po\u010det disk\u016f, minim\u00e1ln\u011b: 4<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 vy\u0161\u0161\u00ed spolehlivost d\u00edky zrcadlen\u00ed<br \/>\n\u2705 data jsou st\u00e1le dostupn\u00e1, pokud v ka\u017ed\u00e9m p\u00e1ru funguje alespo\u0148 jeden disk<br \/>\n\u2705 v\u00fdborn\u00fd v\u00fdkon \u010dten\u00ed i z\u00e1pisu d\u00edky stripingu<br \/>\n\u2705 Rychl\u00e1 obnova dat p\u0159i selh\u00e1n\u00ed disku<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 kapacita je polovina celkov\u00e9 kapacity v\u0161ech stejn\u00fdch disk\u016f<br \/>\n\ud83d\udfe5 minim\u00e1ln\u00ed po\u010det disk\u016f: 4<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 8.77567%;height: 22px\"><code>&lt;strong&gt;RAID 01&lt;\/strong&gt;<\/code><\/td>\n<td style=\"width: 39.1695%;height: 22px\">\ud83d\udca1 disky se spoj\u00ed stripingem <em>(RAID 0)<\/em> dvou nebo v\u00edce stripe-set\u016f, kter\u00e9 se zarcadl\u00ed<em> (RAID 1)<\/em><br \/>\n\ud83d\udca1 sud\u00fd po\u010det disk\u016f, minim\u00e1ln\u011b: 4<br \/>\n\ud83d\udca1 od r. 2023 odstran\u011bn\u00fd z Linuxov\u00e9ho j\u00e1dra \u26a0\ufe0f<\/td>\n<td style=\"width: 27.1833%;height: 22px\">\u2705 spolehlivost d\u00edky zrcadlen\u00ed<\/td>\n<td style=\"width: 24.8715%;height: 22px\">\ud83d\udfe5 zastaral\u00fd p\u0159edch\u016fdce RAID10<br \/>\n\ud83d\udfe5 hor\u0161\u00ed odolnost p\u0159i v\u00edce selh\u00e1n\u00edch \u26a0\ufe0f<br \/>\n\ud83d\udfe5 slab\u0161\u00ed v\u00fdkon v\u016f\u010di RAID10<br \/>\n\ud83d\udfe5 m\u00e9n\u011b flexibiln\u00ed p\u0159i roz\u0161i\u0159ov\u00e1n\u00ed<br \/>\n\ud83d\udfe5 minim\u00e1ln\u00ed po\u010det disk\u016f: 4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div><\/div>\n<a id=\"kterou_implementaci_zvolit\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-12\">Kterou implementaci zvolit?<\/div><div id=\"mch-acr-content-12\" class=\"mch-acr-content\" hidden><\/p>\n<p>RAID, a\u0165 u\u017e <strong>Hardwarov\u00fd nebo Softwarov\u00fd<\/strong>, ka\u017ed\u00fd m\u00e1 sv\u00e9 v\u00fdhody a nev\u00fdhody. <strong>Z\u00e1le\u017e\u00ed na individu\u00e1ln\u00edch pot\u0159eb\u00e1ch i pro jak\u00fd opera\u010dn\u00ed syst\u00e9m<\/strong>.<\/p>\n<p>Kr\u00e1tk\u00fd p\u0159ehled:<\/p>\n<table style=\"border-collapse: separate;width: 100%;border-spacing: 11vw 1vw;height: 167px\">\n<tbody>\n<tr style=\"height: 18px\">\n<td style=\"width: 47.4056%;text-align: center;height: 18px\"><strong>Hardwarov\u00fd<\/strong><\/td>\n<td style=\"width: 52.5945%;text-align: center;height: 18px\"><strong>\u010cist\u011b softwarov\u00fd<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 149px\">\n<td style=\"width: 47.4056%;height: 149px\">\u2705 nezat\u011b\u017euje CPU<br \/>\n\u2705 lep\u0161\u00ed v\u00fdkon v z\u00e1t\u011b\u017ei<br \/>\n\ud83d\udfe5 vy\u0161\u0161\u00ed cena<em> (RAID \u0159adi\u010d)<\/em><br \/>\n\ud83d\udfe5 nep\u0159enositeln\u00fd na jin\u00fd typ \u0159adi\u010de<\/td>\n<td style=\"width: 52.5945%;height: 149px\">\u2705 n\u00edzk\u00e9 n\u00e1klady <em>(net\u0159eba RAID \u0159adi\u010d)<\/em><br \/>\n\u2705\u00a0 p\u0159enositeln\u00fd na jin\u00fd typ \u0159adi\u010de<br \/>\n\ud83d\udfe5 zat\u011b\u017euje CPU u RAID\u016f s paritou<br \/>\n\ud83d\udfe5 ni\u017e\u0161\u00ed v\u00fdkon u RAID\u016f s paritou<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"border-collapse: separate;width: 100%;border-spacing: 1vw 1vw\">\n<tbody>\n<tr style=\"height: 23px\">\n<td style=\"width: 16.3384%;height: 23px;text-align: center\"><strong>RAID<\/strong><\/td>\n<td style=\"width: 42.1516%;text-align: center;height: 23px\"><strong>Linux<\/strong><\/td>\n<td style=\"width: 41.5098%;text-align: center;height: 23px\"><strong>Windows<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"width: 16.3384%;height: 2.5vw\"><strong>Hardwarov\u00fd<\/strong><\/td>\n<td style=\"width: 42.1516%;height: 23px\">\u2705 \u0161irokou podporu<em> (LSI,\u00a0Adaptec,\u00a0Dell, HP)<\/em><\/td>\n<td style=\"width: 41.5098%;height: 23px\">\u2705 vynikaj\u00edc\u00ed podporu <em>(Intel, Adaptec, LSI, Dell, HP)<\/em><\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"width: 16.3384%;height: 23px\"><strong>\u010cist\u011b softwarov\u00fd<\/strong><\/td>\n<td style=\"width: 42.1516%;height: 23px\">\u2705 mdadm (klasick\u00fd, stabiln\u00ed)<br \/>\n\u2705 Btrfs<em> (RAID FS)<\/em><br \/>\n\u2705 ZFS <em>(RAID FS)<\/em><\/td>\n<td style=\"width: 41.5098%;height: 23px\">\u2705 Dynamick\u00e9 disky<br \/>\n\ud83d\udfe5 Dynamick\u00e9 disky &#8211; slab\u00e1 p\u0159enositelnost<br \/>\n\u2705 Storage Spaces<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div><\/div>\n<h3><a id=\"raid_s_mdadm\"><\/a><a href=\"#\" class=\"mch-gototop\" onclick=\"window.scrollTo({top: 0, behavior: 'smooth'}); return false;\">\u21a9\ufe0f\ufe0f<\/a> RAID s mdadm<\/h3>\n<p>B\u011b\u017en\u011b pou\u017e\u00edv\u00e1m tento softwarov\u00fd <a href=\"https:\/\/milchyn.cz\/o-mdadm\/\">diskov\u00fd RAID s mdadm<\/a> a u\u017e n\u011bkolikr\u00e1t se mi to p\u0159i z\u00e1vad\u011b disku vyplatilo.<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u011b\u017en\u011b pou\u017e\u00edv\u00e1m tento softwarov\u00fd diskov\u00fd RAID s mdadm a u\u017e n\u011bkolikr\u00e1t se mi to p\u0159i z\u00e1vad\u011b disku vyplatilo. &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1144,"menu_order":-97,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3816","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O diskov\u00e9m RAIDu - milchyn.cz<\/title>\n<meta name=\"description\" content=\"Technologie propojen\u00ed v\u00edce pevn\u00fdch disk\u016f do jednoho celku s c\u00edlem spolehlivosti ukl\u00e1d\u00e1n\u00ed a \u010dten\u00ed dat, v\u00fdkonosti a velk\u00e9 kapacity \u00falo\u017ei\u0161t\u011b.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/milchyn.cz\/o-diskovem-raidu\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" 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