1. Added 2 extra tempDB files across 2 logical drives.
2. Restarted SQL Service or the server
3. The 2 extra files disappear from tempDB. However, they still on the hard drive.
??? Why did they disappear and is there a way to tell SQL to keep them around?
I noticed also that sys.sysaltfiles still has the file names so they can't be added back in under the same names.
I have MSSQL 2012 and windows 2012