SQL Plugin: BUFFERCOUNT = 4 Failed to perform backup

[Dmont]

We've recently started to use the Veeam SQL Plugin to backup our SQL databases. We've had a few issues that have been resolved by this forum plus Veeam support and hope you can help again.

One of our Veeam database backups is failing with the below error:

18/11/2025 16:32:36 :: Failed to backup database DBName_deleted. Error: [Microsoft][ODBC Driver 18 for SQL Server][SQL Server]Write on "0460c254-639e-4541-8c57-7c76bd838930" failed: 995(The I/O operation has been aborted because of either a thread exit or an application request.) [Microsoft][ODBC Driver 18 for SQL Server][SQL Server]A nonrecoverable I/O error occurred on file "0460c254-639e-4541-8c57-7c76bd838930:" 995(The I/O operation has been aborted because of either a thread exit or an application request.). [Microsoft][ODBC Driver 18 for SQL Server][SQL Server]BACKUP DATABASE is terminating abnormally. Failed to execute query. Error to execute query: BACKUP DATABASE 'DBName_deleted' TO VIRTUAL_DEVICE='0460c254-639e-4541-8c57-7c76bd838930' ,VIRTUAL_DEVICE='0460c254-639e-4541-8c57-7c76bd8389301' WITH NAME='DBName_deleted", DESCRIPTION='', MEDIADESCRIPTION =N'8cfc2cbd-2b45-4e2e-8d58-65cb7d32fe72', MAXTRANSFERSIZE = 4194304, BUFFERCOUNT = 4 Failed to perform backup

[Mildur]

Hi David,

An I/O error usually indicates a problem reading data blocks from the filesystem or disk, which isn’t something that can be resolved through the forum.
Since our RnD Forum isn’t technical support, please share your case number as requested by our forum policy that was displayed when you clicked New Topic.

Thank you for complying with our forum policy,
Fabian