{"id":55,"date":"2005-08-16T13:44:01","date_gmt":"2005-08-16T13:44:01","guid":{"rendered":""},"modified":"2015-01-28T11:43:27","modified_gmt":"2015-01-28T11:43:27","slug":"linux_raid_problems","status":"publish","type":"post","link":"http:\/\/www.snoopdos.com\/blog\/linux_raid_problems\/","title":{"rendered":"Linux RAID problems"},"content":{"rendered":"<p>I came across <a href=\"http:\/\/www.nber.org\/sys-admin\/linux-nas-raid.html\">this article<\/a> about RAID systems under Linux, and some of the problems that can occur.<\/p>\n<p>It&#8217;s interesting reading, especially the explanation as to why a single drive failure in a Linux RAID system is often also followed by a second failure before the array has had a chance to rebuild &#8230; rather concerning, since that can effectively negate the redundancy benefit of having a RAID in the first place.<\/p>\n<p>Let&#8217;s hope my <a href=\"http:\/\/www.lsilogic.com\/products\/megaraid\/sata_150_6.html\">MegaRaid SATA150-6<\/a> controller doesn&#8217;t suffer from similar problems&#8230;<\/p>\n<p>Also of interest: drive manufacturers appear to be routinely making minor adjustments to the size of discs, even when the model number remains the same &#8211; this can cause problems when swapping out a dead drive, if the replacement is slightly smaller. Might be an idea to stockpile a few spare drives to have on hand which are from the same batch as your original set.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I came across this article about RAID systems under Linux, and some of the problems that can occur. It&#8217;s interesting reading, especially the explanation as to why a single drive failure in a Linux RAID system is often also followed by a second failure before the array has had a chance to rebuild &#8230; rather &hellip; <a href=\"http:\/\/www.snoopdos.com\/blog\/linux_raid_problems\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Linux RAID problems<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-55","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/posts\/55","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/comments?post=55"}],"version-history":[{"count":1,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/posts\/55\/revisions"}],"predecessor-version":[{"id":169,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/posts\/55\/revisions\/169"}],"wp:attachment":[{"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/media?parent=55"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/categories?post=55"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.snoopdos.com\/blog\/wp-json\/wp\/v2\/tags?post=55"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}