This section explains how to allocate disk space for the database server. Read the following sections before you allocate disk space:
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.
On UNIX, if you allocate raw disk space, you should use the UNIX ln command to create a link between the character-special device name and another filename. For more information on this topic, see Creating Symbolic Links to Raw Devices (UNIX).
Using a UNIX file and its inherent operating-system interface for database server disk space also is referred to as using cooked space.
On Windows, you should use NTFS files for database server disk space. For more information on this recommendation, see Unbuffered or Buffered Disk Access on UNIX.
You can balance chunks over disks and controllers. Placing multiple chunks on a single disk can improve throughput.
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