{"id":506,"date":"2010-05-11T10:37:41","date_gmt":"2010-05-11T03:37:41","guid":{"rendered":"https:\/\/www.implementer.co.th\/wordpress\/?p=506"},"modified":"2010-05-11T10:37:41","modified_gmt":"2010-05-11T03:37:41","slug":"raid-compare","status":"publish","type":"post","link":"https:\/\/implementer.co.th\/wordpress\/knowledge\/hardware\/raid-compare\/","title":{"rendered":"\u0e40\u0e1b\u0e23\u0e35\u0e22\u0e1a\u0e40\u0e17\u0e35\u0e22\u0e1a RAID"},"content":{"rendered":"<p><strong>Summary of RAID Methods<\/strong><\/p>\n<table border=\"0\" cellspacing=\"3\" cellpadding=\"4\" summary=\"Summary of RAID Methods\">\n<colgroup>\n<col width=\"20%\"><\/col>\n<col width=\"14%\"><\/col>\n<col width=\"14%\"><\/col>\n<col width=\"19%\"><\/col>\n<col width=\"16%\"><\/col>\n<col width=\"17%\"><\/col>\n<\/colgroup>\n<thead>\n<tr>\n<th><\/th>\n<th>RAID 0<\/th>\n<th>RAID 1<\/th>\n<th>RAID1+0<\/th>\n<th>RAID 5<\/th>\n<th>RAID ADG<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Alternative name<\/td>\n<td>Striping (no fault tolerance)<\/td>\n<td>Mirroring<\/td>\n<td>Mirroring and Striping<\/td>\n<td>Distributed Data Guarding<\/td>\n<td>Advanced Data Guarding<\/td>\n<\/tr>\n<tr>\n<td>Usable disk space*<\/td>\n<td>100%<\/td>\n<td>50%<\/td>\n<td>50%<\/td>\n<td>67% to 96%<\/td>\n<td>50% to 93%<\/td>\n<\/tr>\n<tr>\n<td>Usable disk space formula<\/td>\n<td>n<\/td>\n<td>n\/2<\/td>\n<td>n\/2<\/td>\n<td>(n-1)\/n<\/td>\n<td>(n-2)\/n<\/td>\n<\/tr>\n<tr>\n<td>Minimum number of physical disks<\/td>\n<td>1<\/td>\n<td>2<\/td>\n<td>4<\/td>\n<td>3<\/td>\n<td>4<!--more--><\/td>\n<\/tr>\n<tr>\n<td>Tolerates failure of one physical disk?<\/td>\n<td>No<\/td>\n<td>Yes<\/td>\n<td>Yes<\/td>\n<td>Yes<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<td>Tolerates simultaneous failure of more than one physical disk?<\/td>\n<td>No<\/td>\n<td>No<\/td>\n<td>Only if no two failed disks are in a mirrored pair<\/td>\n<td>No<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<td>Read performance<\/td>\n<td>High<\/td>\n<td>High<\/td>\n<td>High<\/td>\n<td>High<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>Write performance<\/td>\n<td>High<\/td>\n<td>Medium<\/td>\n<td>Medium<\/td>\n<td>Low<\/td>\n<td>Low<\/td>\n<\/tr>\n<tr>\n<td>Relative cost<\/td>\n<td>Low<\/td>\n<td>High<\/td>\n<td>High<\/td>\n<td>Medium<\/td>\n<td>Medium<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0e17\u0e35\u0e48\u0e21\u0e32 <a href=\"http:\/\/docs.hp.com\/en\/J6369-90050\/ch02.html\">HP<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary of RAID Methods RAID 0 RAID 1 RAID1+0 RAID 5 RAID ADG Alternative name Striping (no fault tolerance) Mirroring Mirroring and Striping Distributed Data Guarding Advanced Data Guarding Usable disk space* 100% 50% 50% [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4],"tags":[44,160],"class_list":["post-506","post","type-post","status-publish","format-standard","hentry","category-hardware","tag-compare","tag-raid"],"_links":{"self":[{"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/posts\/506"}],"collection":[{"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/comments?post=506"}],"version-history":[{"count":0,"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/posts\/506\/revisions"}],"wp:attachment":[{"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/media?parent=506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/categories?post=506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/implementer.co.th\/wordpress\/wp-json\/wp\/v2\/tags?post=506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}