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Backup Size


Backup Size

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pradeep.mohan
pradeep.mohan
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Hi,

My one of database size around 5GB (data file 4.5 & log 500 MB) once i took the complete full backup the backup size is only 2.5 GB how its possible ? [Recovery model is full]

My understanding is full backup will take complete .mdf and .ldf if so as per files size it should around 5GB but its reduced.

Kindly clarify on this.

Pradeep
GilaMonster
GilaMonster
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A backup is the size of the data in the file + the amount of log space needed to restore consistently. It is not the sum of the sizes of the files.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


pradeep.mohan
pradeep.mohan
Mr or Mrs. 500
Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)Mr or Mrs. 500 (533 reputation)

Group: General Forum Members
Points: 533 Visits: 322
Thanks.

Pradeep
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