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I am running a script every day (only 2 days so far) to back up my database:
sqlcmd -E -S server-hl7\timeclockplus -i timeclockplus.sql
move "C:\Program Files\Microsoft SQL Server\MSSQL.2\MSSQL\Backup\*.*" w:\
Why is it that backups from two different dates have the SAME EXACT size in bytes?? I know for a fact that the database was definitely changed!
The database files (*.mdf, *.ldf) are allocated in chunks – e.g. they’re using a given number of megabytes, until that space is filled up, and then another chunk (several megabytes) is allocated.
It would be really bad for performance to allocate every single byte you ever add to the database.
Due to this chunk-based allocation, it’s absolutely normal to have a given size for a certain period of time – even if your database is being used and data is being added and deleted.