Hello Experts,
We have ms sql 2008 R2 database with 4 data files each of 900 GB. The database is growing and it has left with only 300 GB free space.
So I would like to take an opinion with you all if
1). It is a good idea to add one more data file of 900 GB or
2). Perform the restructuring of the database and distribute this 4 datafile data to may be 8 new datafile with more space?
If we choose any of the above option, what about the performance and the indexing of the database?
If you have any other option then please suggest. Thanks in advance 
Regards,
Mohit