Allocate disk space
This section explains how to allocate disk space for the database server.
Before you can create a storage space or chunk, or mirror an existing storage space, you must allocate disk space for the chunk file. You can allocate either an empty file or a portion of raw disk for database server disk space.
Using a UNIX file and its inherent operating-system interface for database server disk space is called using cooked space.
You can balance chunks over disks and controllers. Placing multiple chunks on a single disk can improve throughput.