Full backup size is very high

  • Hi,

    Database size is 65.4 gb (including mdf, log file and file stream directory)
    Full backup size is 341 GB.
    How to reduce full backup and what is reason for high backup file size.
    Pls advise a solution for reduce backup size
    sql server ver - sql server 16  64 bit

    Regards
    Binu

  • If you constantly backup to the same file and you don't have it set to overwrite, then you have every backup you ever made appended to the same file.  The way most people have backups setup is that it creates a new file for each backup and deletes the older files over time.

    --Jeff Moden


    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.


    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)

  • and the specifics: 
    if you scripted the backup command, you'll see NO INIT which means append to the previous backup file; changing it to INIT will replace the file, effectively deleting the previous backups, unless you change the name.

    BACKUP DATABASE [master]
    TO DISK = N'X:\MSSQL\SQLBackups\STORM-ORIGIN\master\FULL\STORM-ORIGIN_master_FULL_20170701_020000.bak'
    WITH NOFORMAT,
    NOINIT,
    NAME = N'master-Full Database Backup',
    SKIP,
    NOREWIND,
    NOUNLOAD,
    STATS = 10
    GO

    if you look at the backup GUI, you currently have this setting, instead of the Overwrite command which you can see is the next selection

    Lowell


    --help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

  • Thanks for info

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