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Chapter 6 UNIX Settings
Configuring for the IBM AIX Environment (AIX Version 4.1.x and later)
54 LTO-2 Half-Height Tape Drive User’s Guide
• 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-r command. 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)
6
Finding Existing
SCSI Controllers
and Devices
6
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.
Configuring the
LTO-2 Half-Height
Tape Drive using
SMIT
6
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.
To configure AIX using the SMIT utility, use the following procedure:
Note: Record the SCSI ID of the tape drive before installing it.