Tip

Checking the system drive space threshold in SQL Server

Here is how to check the system drive space threshold in SQL Server. (You'll need to install SQL Mail first.)

  1. Create the stored procedure (System_DriveSpace).
  2. Execute the stored procedure as a job with parameters (Drive, Threshold, Global email address/individual email address).

1. Create the following stored procedure:

CREATE Procedure System_DriveSpace
 (
 @DriveLetter char(1),
 @Threshold integer = null,
 @EmailTo varchar(100) = null
 )
As
 set nocount on
 declare @FreeSpace integer
 declare @MinAllowed integer
 declare @EmailMsg varchar(200)
 declare @EmailSub varchar (200)
 declare @ServerName varchar(20)
 
 create table #tmp_DiskSize
  (drive varchar(2), 
  MB_free INT
 )
 insert into #tmp_DiskSize
 exec master..xp_fixeddrives

select @FreeSpace = MB_free from #tmp_DiskSize 
where drive = @DriveLetter
if @Threshold is not null
 select @MinAllowed = @Threshold
 else
 select @MinAllowed = 1024
 If @FreeSpace > @MinAllowed
 Select 'Plenty of space no need for alarm'  
 Else
  begin
   select @Servername=@@ServerName
   Select 'Drive ' + @DriveLetter + ' on ' + @ServerName + ' is below minimum threshold contact dba immediately'
   if @EmailTo is not null
    begin
     select @EmailMsg = 'Drive ' + @DriveLetter + ' is below minimum threshold on ' + @ServerName + '.  Only ' + cast(@FreeSpace as varchar) + 'Mb remaining.  Escalate to DBA and  Infrastructure team immediately'
     select @EmailSub =  '**** CRITICAL CONDITION

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on ' + @ServerName + ' ****' EXEC master.dbo.xp_sendmail @recipients = @EmailTo, @subject = @EmailSub, @message = @EmailMsg end end drop table #tmp_DiskSize return

2. Create the following job:

-------------------------
exec master..system_drivespace 'C', '512', 'sqlmonitors@abc.com'
exec master..system_drivespace 'D', '1024', 'sqlmonitors@abc.com'
exec master..system_drivespace 'E', '2048', 'sqlmonitors@abc.com'

Now, schedule the job accordingly.


This was first published in February 2005

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