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Applies to: 
 SQL Server 
 Azure SQL Managed Instance
Returns the number of disk writes by SQL Server since SQL Server was last started.
 Transact-SQL syntax conventions
Syntax
@@TOTAL_WRITE  
Return Types
integer
Remarks
To display a report containing several SQL Server statistics, including read and write activity, run sp_monitor.
Examples
The following example shows returning the total number of disk reads and writes as of the current date and time.
SELECT @@TOTAL_READ AS 'Reads', @@TOTAL_WRITE AS 'Writes', GETDATE() AS 'As of'  
Here's the result set.
Reads       Writes      As of                   
----------- ----------- ----------------------  
7760        97263       12/5/2006 10:23:00 PM   
See Also
sp_monitor (Transact-SQL)
System Statistical Functions (Transact-SQL)
@@TOTAL_READ (Transact-SQL)