{"id":78940,"date":"2026-11-10T19:43:14","date_gmt":"2026-11-10T19:43:14","guid":{"rendered":"http:\/\/bangla.sitestree.com\/?p=78940"},"modified":"2026-11-10T19:55:50","modified_gmt":"2026-11-10T19:55:50","slug":"rewritten-sql-server-69268","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=78940","title":{"rendered":"SQL Server Backups and Recovery Models: What to Protect and How to Restore"},"content":{"rendered":"<p>A backup strategy protects against accidental deletion, corruption, ransomware, operator error, and physical failures. Replication, clustering, and RAID do not remove the need for independent, tested backups.<\/p>\n<h2>Three common recovery models<\/h2>\n<p>SIMPLE automatically reuses inactive transaction log space after checkpoints, but does not support normal transaction-log backup chains. FULL supports log backups and point-in-time recovery if the chain is maintained. BULK_LOGGED permits minimal logging for certain operations but constrains point-in-time restore through affected log backups.<\/p>\n<h2>Backup types<\/h2>\n<p>A full database backup establishes a base; differential backups capture changes relative to their differential base; log backups preserve a sequence of log records for supported recovery models. File and filegroup backups serve specialized environments.<\/p>\n<h2>Basic full backup command<\/h2>\n<pre><code>BACKUP DATABASE TrainingDB\nTO DISK = 'D:\\SQLBackups\\TrainingDB_full.bak'\nWITH CHECKSUM, COMPRESSION, INIT;<\/code><\/pre>\n<h2>Restore discipline<\/h2>\n<p>Restore into a separate test environment to validate media, dependencies, permissions, application compatibility, and recovery objectives. VERIFYONLY cannot substitute for a successful restore.<\/p>\n<h2>Operational rules<\/h2>\n<p>Protect the backup location, retain copies separate from the production host, rotate credentials, monitor backup failures, document RPO\/RTO targets, and practice recovery regularly.<\/p>\n<hr\/>\n<p><strong>AI, sources and reuse:<\/strong> This is an AI-generated rewrite informed by <a href=\"https:\/\/bangla.sitestree.com\/?p=69268\">the original Open Education post (#69268)<\/a>, with additional explanations and examples. The new article text may be copied, adapted, and republished with or without a reference to this site. Third-party resources and trademarks keep their own rights. <strong>AI can make mistakes.<\/strong> Verify version support, code correctness, and security practices against Microsoft documentation, and test with nonproduction data first.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A backup strategy protects against accidental deletion, corruption, ransomware, operator error, and physical failures. Replication, clustering, and RAID do not remove the need for independent, tested backups.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[20,182],"tags":[466],"class_list":["post-78940","post","type-post","status-publish","format-standard","hentry","category-information-technology","category---blog","tag-sql-server","item-wrap"],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":69268,"url":"http:\/\/bangla.sitestree.com\/?p=69268","url_meta":{"origin":78940,"position":0},"title":"SQL Server : Backups #38","author":"Author-Check- Article-or-Video","date":"August 16, 2021","format":false,"excerpt":"Why are backups needed? To protect accidental data loss. Still, if you use highly available and fault-tolerant systems like SAN, and RAID, you may need to backup your database regularly. These fault tolerant systems can not provide accidental data delete by users, accidental data corruption from software and hardware failure.\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":78938,"url":"http:\/\/bangla.sitestree.com\/?p=78938","url_meta":{"origin":78940,"position":1},"title":"SQL Server Quick Reference: Optimization, Scaling, DMVs, and Backups","author":"Sayed","date":"November 10, 2026","format":false,"excerpt":"SQL Server performance and reliability are related but distinct concerns. A healthy instance needs efficient statements, realistic capacity planning, observability, and a tested restoration process.","rel":"","context":"In &quot;Information Technology&quot;","block_context":{"text":"Information Technology","link":"http:\/\/bangla.sitestree.com\/?cat=20"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":78937,"url":"http:\/\/bangla.sitestree.com\/?p=78937","url_meta":{"origin":78940,"position":2},"title":"SQL Server Administration Study Notes: Performance, Cursors, Indexes, and Recovery","author":"Sayed","date":"November 10, 2026","format":false,"excerpt":"This study guide brings together major SQL Server administration concepts: measuring performance, using indexes, diagnosing slow queries, avoiding inefficient cursors, planning scalability, and protecting recoverability.","rel":"","context":"In &quot;Information Technology&quot;","block_context":{"text":"Information Technology","link":"http:\/\/bangla.sitestree.com\/?cat=20"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":78976,"url":"http:\/\/bangla.sitestree.com\/?p=78976","url_meta":{"origin":78940,"position":3},"title":"SQL Server Backups, Imports, Exports, and Generate Scripts: Key Differences","author":"Sayed","date":"November 10, 2026","format":false,"excerpt":"It is easy to confuse scripts, exports, and backups, but they solve different problems in SQL Server administration and application delivery.","rel":"","context":"In &quot;Information Technology&quot;","block_context":{"text":"Information Technology","link":"http:\/\/bangla.sitestree.com\/?cat=20"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":78944,"url":"http:\/\/bangla.sitestree.com\/?p=78944","url_meta":{"origin":78940,"position":4},"title":"Scaling SQL Server Out: Replicas, Replication, Log Shipping, and Availability","author":"Sayed","date":"November 10, 2026","format":false,"excerpt":"Scaling out means distributing work across multiple server resources rather than relying only on a larger machine. SQL Server offers several technologies, each with different goals and consistency properties.","rel":"","context":"In &quot;Information Technology&quot;","block_context":{"text":"Information Technology","link":"http:\/\/bangla.sitestree.com\/?cat=20"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":78957,"url":"http:\/\/bangla.sitestree.com\/?p=78957","url_meta":{"origin":78940,"position":5},"title":"SQL Server Database Portability: Scripts, Imports, Exports, Backups, and Restores","author":"Sayed","date":"November 10, 2026","format":false,"excerpt":"Not all ways of moving SQL Server data accomplish the same thing. A schema script creates definitions, data export transfers rows, and database backup and restore captures a recovery-oriented image of the database.","rel":"","context":"In &quot;Information Technology&quot;","block_context":{"text":"Information Technology","link":"http:\/\/bangla.sitestree.com\/?cat=20"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78940","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=78940"}],"version-history":[{"count":1,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78940\/revisions"}],"predecessor-version":[{"id":79002,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/78940\/revisions\/79002"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=78940"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=78940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}