Adding space to drive letter

Question

Hello Community
    When you have an SQL Server and lets say you have your mdf on your D:\ drive
and your ldf on your E:\ drive.
    If your database on your D:\ drive starts to run out of storage space and/or
your E:\ drive starts to run out of storage space, how can you add storage space
to your D:\ drive and/or E:\ drive?
    Note: When adding storage the storage added must continue using the same drive
letters because those drive letters are the only place the system will look to
store and retrieve files from?
    Thank you
    Shabeaut

Answer 1

If you want to increase the database’s file size and
modify you can handle that with its growth option with the
MODIFY FILE command, you can also change the file sizing settings using the same code.
The syntax is as follows:
ALTER
DATABASE your database_name --e.g Adventureworks 2008
MODIFY
FILE
NAME = the logical_file_name --the file name that your want
to add storage size 
[ , SIZE = size [ KB | MB | GB | TB ] ] --the new size should be larger that the old size
[ , MAXSIZE = { max_size [ KB | MB | GB | TB ]
|
UNLIMITED
}] -- if you select unlimited, the file might grow to the available physical
drive.
[ , FILEGROWTH = growth_increment [ KB | MB | % ] ]
For instance if you want to increase the size of the file test1dat3 execute the following code,
USE
master;
GO
ALTER
DATABASE AdventureWorks2008
MODIFY
FILE
(NAME
= test1dat3,
    SIZE
= 20MB);
GO
see here for info.
http://msdn.microsoft.com/en-us/library/ms175890.aspx
 and check this as well http://msdn.microsoft.com/en-us/library/ms175890(v=sql.100).aspx
Or  if you want your file is increased to 6MB in size and given a maximum allowable size of 10MB:
ALTER
DATABASE Adventurework
MODIFY
FILE
(NAME='Adventurework_DataFile1',
SIZE=6MB, MAXSIZE=10MB)
once you adjusted your size you can use the below this system stored procedure to see
unallocated space and unused space 
USE AdventureWorks --your database in this case
GO
EXEC
sp_spaceused
But if you think it is very necessary to relocate a database file for an existing database, you can do that too all you have to do is you can follow the below code …the reasons for doing
this may differ depend on the situation—you might need to do this because your database physical
drive is running out of space or to improve performance by placing files on separate RAID arrays.
You can perform this by using the ALTER DATABASE command.
The syntax for changing the file’s location is as follows:
ALTER
DATABASE your database_name
MODIFY
FILE
{NAME
= the logical_file_name
, FILENAME =
'your new_physical_file_name_and_path')
I hope this answer your problem and gooluck
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