{"id":3357,"date":"2017-09-20T21:41:44","date_gmt":"2017-09-20T20:41:44","guid":{"rendered":"http:\/\/www.edwardsd.co.uk\/work\/?p=3357"},"modified":"2021-03-17T15:09:34","modified_gmt":"2021-03-17T15:09:34","slug":"dell-poweredge-servers-internal-dual-sd-module-idsdm-failure","status":"publish","type":"post","link":"https:\/\/www.edwardsd.co.uk\/work\/2017\/09\/dell-poweredge-servers-internal-dual-sd-module-idsdm-failure\/","title":{"rendered":"Dell PowerEdge Servers | Internal Dual SD Module (IDSDM) Failure"},"content":{"rendered":"<p>We are running Dell R620\/630 servers with &#8220;Internal Dual SD Module&#8221; (IDSDM) for the VMware ESX installation.<br \/>\nUnfortunately SD card 1 recently developed a fault.<br \/>\nAs the IDSDM is configured in a fail-over SD1 copies to SD2 therefore we had to swap the cards before performing the rebuild.<\/p>\n<p>It is important to note a few IDSDM module behaviors: <a href=\"https:\/\/goo.gl\/S6XPjP\" target=\"_blank\" rel=\"noopener\">IDSDM White Paper<\/a><\/p>\n<p><strong>Mirror State Stored on the IDSDM module<\/strong><\/p>\n<p>The SD cards mirror state, along with the Disabled or Mirror mode for modular servers, is stored on the&nbsp;IDSDM module itself. This means that it is possible to move an IDSDM module between two systems and&nbsp;preserve the mirror; the BIOS will read the states from the cards during boot up and will reflect the&nbsp;state of the card in setup.<\/p>\n<p><strong>Master SD Card<\/strong><\/p>\n<p>The module design allows that either SD card slot can be the master; in the event of a tie between the two cards, then SD1 is picked as the master. For example, if two new SD cards are installed in the&nbsp;IDSDM while AC power is removed from the system, SD1 is considered the Active or master card in the&nbsp;mirror. SD2 is the backup card, and all file system IDSDM writes will go to both cards, but reads will&nbsp;occur only on SD1. If at any time SD1 fails or is removed, SD2 will automatically become the Active&nbsp;(master) card. The IDSDM module should not be serviced while AC power is present.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p><!--more--><\/p>\n<p><strong>Error with the Dell IDSDM. This was due a faulty SD module.<\/strong><\/p>\nngg_shortcode_0_placeholder\n<p><strong>You can check which SD module is faulty in the iDRAC interface.<\/strong><\/p>\nngg_shortcode_1_placeholder\n<p><strong>Once identified you can replace this (Dell will replace if the server is covered under support) The modules numbers are marked inside the system (behind the SD card)<\/strong><strong>.<\/strong><\/p>\n<p>ngg_shortcode_2_placeholder<br \/>\nngg_shortcode_3_placeholder<\/p>\n<p><strong>The only way to initiate a rebuild of the mirror is during a BIOS POST.<\/strong><\/p>\nngg_shortcode_4_placeholder\n","protected":false},"excerpt":{"rendered":"<p>We are running Dell R620\/630 servers with &#8220;Internal Dual SD Module&#8221; (IDSDM) for the VMware ESX installation. Unfortunately SD card 1 recently developed a fault. As the IDSDM is configured in a fail-over SD1 copies to SD2 therefore we had to swap the cards before performing the rebuild. It is important to note a few [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[47,13,31],"tags":[],"class_list":["post-3357","post","type-post","status-publish","format-standard","hentry","category-dell","category-guide","category-hardware"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pOPt8-S9","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/posts\/3357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/comments?post=3357"}],"version-history":[{"count":5,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/posts\/3357\/revisions"}],"predecessor-version":[{"id":3482,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/posts\/3357\/revisions\/3482"}],"wp:attachment":[{"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/media?parent=3357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/categories?post=3357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.edwardsd.co.uk\/work\/wp-json\/wp\/v2\/tags?post=3357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}