You can move the tempdb of a SQL Server instance to another location using T-SQL, but this requires a little bit of downtime: setting a new location will only take effect after a restart of the SQL Server instance.

First, retrieve the tempdb's current location and logical name:

Use tempdbGOSELECT name,filename FROM sys.sysfilesGO

This should give you two entries: one for the actual database, and one for the transaction log of tempdb. Now that we have the location and logical name, we can change it:

ALTER DATABASE tempdb MODIFY FILE (NAME = tempdev, FILENAME = 'T:\newdir\tempdb.mdf');GOALTER DATABASE tempdb MODIFY FILE (NAME = templog, FILENAME = 'T:\newdir\templog.ldf');GO

Replace the p  ...