Allocating NTFS File Space on Windows

On Windows, the database server uses NTFS files by default. The NTFS file system allows you to use standard filenames for unbuffered files.

To allocate NTFS file space for database server disk space or mirrored space, the first step is to create a null (zero bytes) file.

To allocate NTFS file space for a dbspace, blobspace, or sbspace

Log in as a member of the Informix-Admin group.
Open an MS-DOS command shell.
Change to the directory where you want to allocate the space, as in the following example:
```
c:> cd \usr\data
```
Create a null file with the following command:
```
c:> copy nul my_chunk
```
If you want to verify that the file has been created, use the dir command to do so.

After you have allocated the file space, you can create the dbspace or other storage space as you normally would, using onspaces. For information on how to create a dbspace or a blobspace, refer to Creating a Dbspace that Uses the Default Page Size and Creating a Blobspace.