The following table shows the range of HiRDB file system areas supported by the raw I/O facility:

Purpose1	Support
DB	S2
SDB	S2
SYS	S
WORK	B
UTL	B
SVR	B
NUTL3	S

S: The raw I/O facility is supported.

B: The raw I/O facility is not supported.

¹ This is the purpose of the HiRDB file system area that is specified with the -k option of the pdfmkfs command.

² The following table shows whether or not the raw I/O facility is supported:

Type of RDAREA	Support
Master directory RDAREA	S
Data directory RDAREA	S
Data dictionary RDAREA	S
User RDAREA	S
Registry RDAREA	S
Data dictionary LOB RDAREA	S
User LOB RDAREA	S
Registry LOB RDAREA	S
List RDAREA	B

S: The raw I/O facility is supported.

B: The raw I/O facility is not supported.

3

The following utility files support the raw I/O facility:

• Backup files
• Unload log files
• Unload data files
• Differential backup management files
• Index information files

To use the raw I/O facility, you need an unformatted partition. To create a partition in Windows, choose Computer Management. and then Disk management. For details of how to create a partition, see Disk Operation in the Windows help file.

For the size of a partition, specify the size of HiRDB file system area plus 1 MB.

Notes

• Do not use a partition made up of a group of partitions (such as a volume set or stripe set).
• You need to assign a drive letter to the created partition.
• The raw I/O facility is applicable only to a fixed disk with a sector length of 512 bytes.