{"id":79,"date":"2012-09-17T12:06:40","date_gmt":"2012-09-17T18:06:40","guid":{"rendered":"http:\/\/blog.escarra.org\/?p=79"},"modified":"2012-09-19T09:43:56","modified_gmt":"2012-09-19T15:43:56","slug":"enabling-write-cache-on-perc-h200","status":"publish","type":"post","link":"https:\/\/blog.escarra.org\/?p=79","title":{"rendered":"Enabling Write Cache on PERC H200"},"content":{"rendered":"

The Dell PERC H200 is a very basic RAID controller that does not have battery-backed cache, and therefore does not let you enable Write Caching within the OS. Writes using the H200 adapter can be very slow, so much that Windows Updates could take 2 to 3 hours on a RAID1!<\/p>\n

To force enable write cache on an H200 adapter (at your own risk), do the following:<\/p>\n

<\/p>\n

    \n
  1. Go to www.lsi.com<\/a> and search for the latest MSM (or MegaRAID Storage Manager). At the time of this writing, it is 12.05.03.00.\u00a0Install it, then run it.<\/li>\n
  2. Log in to MSM using your local\/domain admin credentials.\"\"<\/a><\/li>\n
  3. Under the Logical tab, select the VD you want to enable write cache for, then right click and Set Virtual Drive Properties.<\/li>\n
  4. \"\"Enable the write cache and accept all dialogs.<\/li>\n
  5. Confirm write cache is enabled using Device Manager.<\/li>\n<\/ol>\n

    Keep in mind that this setting could cause data corruption if you don’t gracefully shut down your server during a disk write operation. What’s why it’s disabled by default and difficult to enable. Don’t leave this enabled on a production server…<\/p>\n","protected":false},"excerpt":{"rendered":"

    The Dell PERC H200 is a very basic RAID controller that does not have battery-backed cache, and therefore does not let you enable Write Caching within the OS. Writes using the H200 adapter can be very slow, so much that Windows Updates could take 2 to 3 hours on a RAID1! To force enable write […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[17],"tags":[],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/posts\/79"}],"collection":[{"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=79"}],"version-history":[{"count":11,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":103,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions\/103"}],"wp:attachment":[{"href":"https:\/\/blog.escarra.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.escarra.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}