This is a fairly common question to see asked \u2013 does NetWorker, when a non-full backup is run, scan the existing client indices to determine what files have changed from previous backups?<\/p>\n
The short answer is: no.<\/p>\n
The more in-depth answer is that NetWorker will use one of a few different mechanisms for determining what files should be backed up in a non-full backup scenario, and none of those mechanisms involve scanning the client indices. These mechanisms are:<\/p>\n
Personally, I really dislike<\/strong> the use of the archive bit. Too many programmers on Windows take liberty with this odious little setting, and it’s become so bastardised and unreliable that my very firm<\/em><\/strong> recommendation is you follow the instructions in the NetWorker administration guide to turn off use of the archive bit in incremental backups. (Hint: search for NSR_AVOID_ARCHIVE*).<\/p>\n So, there’s 3 ways that NetWorker can be expected to use to determine what files should be backed up in a non-full backup \u2013 and none<\/strong> of those mechanisms are achieved through an index scan.<\/p>\n — Expanding on this more fully – on the backup server itself, establish an environment variable called NSR_AVOID_ARCHIVE and set it to any value other than “No”. I prefer to set it to “YES” or 1 so it’s entirely clear what the desired result is.<\/p>\n On Unix, places to set this is in the \/etc\/profile or the NetWorker startup script; however, the problem with setting it in the NetWorker startup script is that you have to remember to re-create that setting every time you upgrade NetWorker, since the startup script is fully replaced each time.<\/p>\n In Windows, set it as a system environment variable under the properties for the system itself. These variables are established before programs are started, meaning that NetWorker will be aware of them when it starts.<\/p>\n","protected":false},"excerpt":{"rendered":" This is a fairly common question to see asked \u2013 does NetWorker, when a non-full backup is run, scan the…<\/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":[6,16,27],"tags":[462,464,468],"class_list":["post-449","post","type-post","status-publish","format-standard","hentry","category-basics","category-networker","category-windows","tag-incremental","tag-index","tag-index-scan"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n\t\t\n\t\t
\n* [Updated 2009-06-18]<\/strong><\/p>\n