~/talk

Break five common myths about SQL Server backup

Talkat SQLBits 2022 · 2022-03-08..03-12· [databases]
slides:none on file

Five concrete myths get busted with live T-SQL demos and numbers: repeated full backup does not break log chain — restoring the last log after a later full recovers all rows; differential needs only latest — you can skip intermediate diffs and restore the final diff plus required logs; system DB quirks: master accepts only full backups, model/msdb follow normal rules, and tempdb/10DB cannot be backed up; full backups include changes so concurrent log backups aren’t required to reach the full point; backups do not populate the regular buffer pool.

AI-written summary · about

  1. 0:00Introduction and setup
  2. 1:34Full and differential backups
  3. 5:39Understanding incremental diffs
  4. 7:58System database backups
  5. 12:20Log truncation during backups
  6. 16:34Backup and buffer pool usage
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