Quantum LTO-2 manual Smit

Chapter 6 UNIX Settings

Configuring for the IBM AIX Environment (AIX Version 4.1.x and later)

•Uses Mode Select Page 10h to enable/disable compression

Once st.conf has been modified, the kernel must be reconfigured by booting the system using the boot-rcommand. If you are replacing a tape device with the same SCSI ID you may want to delete the st devices from the /dev/rmt directory (recommended).

When using commands that require a blocking factor such as tar or ufsdump, we suggest a minimum factor of 64. The preferred factor is 128.

For commands that use density and tape size settings the tape density is 124,000 bpi and the tape length is 1800 feet. We suggest using the ufsdump/ufsrestore commands. These commands automatically detect end of tape without the need of the density and tape length settings.

To enable the st driver to turn on data compression when writing data to tape use the .c. option. For example, tar cf /dev/rmt/0c causes the tape drive to compress the data before writing the data to tape.

Configuring for the IBM AIX Environment (AIX Version 4.1.x and later)

Finding Existing

SCSI Controllers

and Devices

Configuring the LTO-2 Half-Height Tape Drive using

SMIT

Enter the following command: lsdev–Cs scsi. This shows all the SCSI target IDs known to the system. Note the SCSI target IDs and choose a SCSI ID for the LTO-2 Half-Height Tape Drive that will not conflict with the IDs shown from the lsdev command.

SCSI ID #7 is almost always dedicated to the SCSI controller. Never configure your target device for ID 7 unless you are absolutely sure that the controller is not addressed for ID 7.

The LTO-2 Half-Height Tape Drive can be configured to work with AIX Versions 4.1.x and later by using the SMIT .Other SCSI Tape Drive. option.

Note: Record the SCSI ID of the tape drive before installing it.

To configure AIX using the SMIT utility, use the following procedure:

54 LTO-2 Half-Height Tape Drive User’s Guide