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 Diff Backup

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duhaas
Constraint Violating Yak Guru

310 Posts

Posted - 2008-06-11 : 13:59:34
In playing with differential backups, i have taken a full last night, 17GB, took my first diff today 16.5GB, took another diff right after, it was still 16.5GB, took another diff right after 16.5 GB. This database has 0 activity during the day, the import takes place @ night, and select's are done to it during the day. Any help would be greatly appreciated

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2008-06-11 : 14:06:25
A differential backup includes all of the changes since the last full backup. So yes it should be 16.5GB if you are doing them right after each other.

Use transaction log backups if you just want incremental backups.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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duhaas
Constraint Violating Yak Guru

310 Posts

Posted - 2008-06-11 : 15:04:13
Ok, I guess I was under the assumption that it would be a "differential" meaning the backup itself would just include the changes, meaning the backup file would be tiny.
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duhaas
Constraint Violating Yak Guru

310 Posts

Posted - 2008-06-11 : 15:11:18
Nevermind, I get it now, sorry, thanks.
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