The Filegroup PRIMARY for the database CRM running out of space I have a db for which I am getting error as shown below.

The Filegroup «PRIMARY» for the database "CRM" in SQL instance "MSSQLSERVER" on computer "prod" is running out of space.

sqace details in MB are as below: mdf file now has reached 249 GB. 

CRM mscrm       D:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\CRM.mdf  249157
CRM mscrm_log   E:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Data\CRM_log.LDF 5137

D and D drives are having more than 50 GB free space. C and temp has more than 30 GB and 20 GB free space each .. No drive is running out of space.

growth is set as auto with no restriction at this database.

Any clues ?

Thanks
Hungry DBA
This isn't an error from your SQL Server. At least I couldn't find it in sys.messages. (If you didn't post the exact error message or if you have an additional error number, please adjust your post.)

You have some monitoring software which assumes that you want to get notified when a database is close to full (for some filegroup). You can choose to ignore that notification and rely on the autogrow functionality in SQL Server, or you can expend the size of the file manually. Up to you. 

Manually growing can be better since you control when you do this. Not that growing a file block general operations, but if you wait for an autogrow to kick in, then you have one or more users that suffers during that autogrow (those who need more space at that point in time).

Also, make sure that you have reasonable autogrow settings and consider whether you want to turn on Instant File Initialization.