Quantum LTO-2 User Manual

Chapter 6  UNIX Settings
Configuring for the IBM AIX Environment (AIX Version 4.1.x and later)

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

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

 has been modified, the kernel must be reconfigured by 

booting the system using the

 command. If you are replacing a tape 

device with the same SCSI ID you may want to delete the st devices from 

the

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

 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

6

Enter the following command:

 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. 

6

The LTO-2 Half-Height Tape Drive can be configured to work with AIX 

Versions 4.1.x and later by using the

. option. 

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

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