Emerson Liebert PSA Line-Interactive UPS 500-1500VA User Manual

In addition to the general requirements listed in 3.0 - What is Required to Use Liebert 

MultiLink?, prospective Liebert MultiLink users must also have these minimal requirements: 

• AIX 5.1 for RISC System/6000
• Appropriate “fixes” applied to operating system For specific fixes that need to be installed to run 

Java 1.4.1 applications on AIX, see the Java 1.4.1 for AIX download area at:

• Common Desktop Environment (X Window System)
• TCP/IP network protocol
• 100 MB of free disk space on the partition where Liebert MultiLink will be installed (during 

installation, the /tmp directory must have 150 MB free)

• A mouse or other pointing device
• 512 MB of RAM

Comply with the following requirements, then return to 5.1 - Before Installing Liebert MultiLink.
1. During installation you must be logged in as “root.”
2. If using a serial port connection to the UPS, use the SMIT utility to disable getty at system 

startup from monitoring the port where you are connecting the UPS.

3. If you are using an SNMP card, check for SNMP daemons. Execute the command

ps -ef | grep -i snmp

. If the process snmpd (or similar) is running, it must be disabled before 

you can install Liebert MultiLink.
If you are not using an SNMP hardware card with your UPS, Liebert MultiLink can use its 

default port settings of 3029/3027, and there is no need to disable the SNMP daemons.

4. Make sure the Liebert MultiLink distribution file has execute permission (

chmod +x <file>

), 

then execute it.

Alternate to /tmp during installation
If you do not have enough disk space in the /tmp partition to meet the requirement specified in 

A.7.1 - Platform-Specific Requirements, you may specify an alternate location when starting the 

installation. For example, to use /home/tmp, start the install with the following command:

./ML_36_003_AIX.bin /home/tmp

The preconfigured serial ports are 

/dev/tty0

 and 

/dev/tty1

. You may select one of these or enter 

another as appropriate.

The Liebert MultiLink installation program places the script 

LiebertM

 in the 

/usr/sbin

 directory 

and modifies the 

/etc/rc.tcpip

 file to execute this script.