Your backup server is behaving perfectly normally, but you want to do one minor change to it. For example, you’ve read the performance tuning guide and realised you need to double the amount of RAM in the server. So you shut it down, install the extra memory, reboot it and it … goes to hell in a handbasket.<\/p>\n
What happened?<\/p>\n
Maybe filesystems didn’t mount.<\/p>\n
Maybe a tape drive or library didn’t reappear.<\/p>\n
Maybe … just maybe, someone made a change previously, but either (a) didn’t commit it to happen permanently or (b) didn’t test it with a reboot.<\/p>\n
Your backup server is like any other production system, and therefore there’s a strong risk that uncontrolled change will cause issues. So, always make sure you follow these two rules:<\/p>\n
Your backup server is behaving perfectly normally, but you want to do one minor change to it. For example, you’ve…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[3,5,16],"tags":[208,209],"class_list":["post-3221","post","type-post","status-publish","format-standard","hentry","category-architecture","category-backup-theory","category-networker","tag-change","tag-change-control"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t