Sql server 2016 split url backup into multiple files

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The question:

I have a database backing up into an Azure page blob via URL backups set up from SSMS. I am trying to find out how to split the backup into smaller chunks. I have a 2 TB database that is now backing up in to one large file, I want to separate it into 4 smaller files. Any hints would be helpful.

Environment Summary: Azure VM with SQL 2016 Enterprise
Backup Method: URL Backup to Azure Page Blob
Security Involved: Key Vault and Credentials
Current Status: Backups working
Desired Status: Large Backups split into multiple files

I am ok with a powershell example.
Thank you

The Solutions:

Below are the methods you can try. The first solution is probably the best. Try others if the first one doesn’t work. Senior developers aren’t just copying/pasting – they read the methods carefully & apply them wisely to each case.

Method 1

you should split it into multiple url in this way:

BACKUP DATABASE mydb
TO URL = 'https://mystorage.blob.core.windows.net/mycontainer/mydbBackupSetNumber2_0.bak',
URL = 'https://mystorage.blob.core.windows.net/mycontainer/mydbBackupSetNumber2_1.bak',
URL = 'https://mystorage.blob.core.windows.net/mycontainer/mydbBackupSetNumber2_2.bak'
WITH COMPRESSION, MAXTRANSFERSIZE = 4194304, BLOCKSIZE = 65536;

ref:
https://docs.microsoft.com/en-us/archive/blogs/sqlcat/backing-up-a-vldb-to-azure-blob-storage


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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