Keeping eye on the amount of disk space available on SQL Servers is something that every database administrator duty. However, if SQL Server runs out of the disk space, then everything comes to a crashing halt. Therefore, it is important for DBA to monitor the SQL Server disk space on daily basis carefully to make sure that all databases have enough disk space for the applications using SQL Server.
Monitoring SQL Server instances and database disk space provides sufficient information required to diagnose and troubleshoot the SQL Server issues. Slow reporting, hiccups and bottlenecks can badly affect the business. Therefore, it is important to monitor SQL Server disk space regularly because regularly changing schema, configuration, and the data need some additional and manual tuning. Thus, in order to have a smooth tuning DBA needs to a proactive and monitor the performance constantly.Lets us learn how to monitor SQL Server disk space. But first let us understand the reason to monitor disk space in SQL Server
The most necessary operation that each DBA must do is monitor SQL Server database files. It is because monitoring helps in downtime and prevent data loss. Thus, in this segment, we will be discussing different methods to monitor auto-growths of SQL Server disk space.
Auto-growth settings inherited from the model databases helps in growing the SQL Server logs and database files.
One can use the three options for auto growth:
Except for these defaults, most of the DBAs having SQL Server database files auto growing, which is not at all a good idea because:
The best thing that a user can do is minimise the number of auto-growths. In addition to this, it also suggested using MB for the growth of data file rather than a percentage. Now, to prevent so many virtual log files that result in performance problem, size the transaction log files:
There are two parts to monitor the SQL Server database size and are mentioned below:
In order to check the free space available on the disk in MB, it suggested to use xp_fixeddrives procedure. It is a good procedure if a user needs only that information but if a user wants to have the drive size idea, then it fails.
To have all the required information, for example, execute a query given below:
The result of this query is structured like this one:
One can easily sum up by drive to estimate the total size used-up by all of the database files. A user needs to execute the script written above in a predefined interval of time to make sure that database is not running out of the space.
Now, to check where the database files will auto-grow use sp_spaceused for this. However detecting auto-growth is a more complex task.
One can detect the auto-growth by using the Performance Monitor:
To monitor the log auto-growth, one can use performance monitor. This performance monitor helps me in monitoring log growths, percent log used and data file size. It also allows DBA to look for a specific database and if important, raise alerts to send net messages also.
The Bottom Line
We have discussed the important activity performed by the DBA, ie how to monitor SQL Server disk space. If the monitoring process fails, then it leads to SQL Server downtime and data loss. Thus, in this blog, we have discussed different manuals to monitor size of database files in SQL Server. One can easily refer them to prevent all issues related to SQL Server disk space.