Precautions - Dell poweredge r720 Installation, Maintenance And Troubleshooting Manual

Chapter 3: Maintenance

Precautions

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!
DANGER:
Hazardous energy levels are present inside the system when the system remains
DANGER:
connected to a power source. Be sure to follow the safety procedures in the
owner's guide or service manual.
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WARNING:
Before replacing any component in the system, you must turn off the computer
WARNING:
and disconnect the AC power cord.
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CAUTION:
Printed circuit boards and hard disk drives contain electronic components that are
CAUTION:
extremely sensitive to static electricity. Ordinary amounts of static from your
clothes or the work environment can destroy components. Do not touch the
components or any metal parts without taking proper antistatic precautions. See
Using an ESD wrist strap
!
CAUTION:
Avoid keeping the cover off for extended periods of time while the system is
CAUTION:
operating. The cover must be installed to prevent automatic thermal shutdown.
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Important:
For security purposes, CMS R17 and later releases include a CMS hardware
Important:
authorization feature. During the initial CMS feature authorization process, the
system preserves information about the configuration and hardware of the CMS
system. The system periodically checks the changes to the motherboard, IP
address, or MAC address. If the system detects differences between the
preserved CMS hardware information and the current CMS hardware information,
the CMS hardware feature is reset to not authorized. This forces the auth_set
command to be re-run. If at any time the system displays a message that the
auth_set command needs to be run, then the customer must contact Avaya
Services personnel to run the auth_set command. The auth_set command
requires a password that is only available to authorized Avaya personnel. Once
the auth_set command has been re-run, the system preserves the new CMS
hardware information.
To minimize downtime the customer must make arrangements with Avaya personnel
to run the auth_set command prior to performing any of the following changes to the
system:
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36
Avaya CMS Dell R720 and R620 Computer Hardware Installation
Replacing a motherboard
Changing the IP address of the CMS system
on page 37 for more information.
October 2015