Software for Linux Owner manual

required power and cooling capacity for the supported systems they contain. When the power
and cooling capacity is interrupted or reduced, the consumption must be adjusted to match the
change. Some examples of sudden capacity reduction include loss of external power, chiller
failures, and utility company demands for cutbacks.
The Data Center Power Control facility provides a means to pre-define the responses to such events,
creating flexible rules in Systems Insight Manager that can be invoked when such events occur.
The rules can determine the set of systems that need to be adjusted based on criteria evaluated
when the event occurs. The rules also specify actions that should be taken on those systems. These
rules allow for flexible event responses such as "shut down all of the low-priority systems in the
data center and make the medium-priority systems operate in low power mode."
Some of the other scenarios are:
• Data center monitoring detects that an external power source has failed, or is about to fail.
The data center continues to operate on a backup power source, but load must be reduced
to make the best use of the limited capacity of the UPS.
• Data center monitoring detects that a chiller has failed, or is about to fail. The data center
continues to operate, but load must be reduced so the data center stays cool (and the critical
workloads stay up) as long as possible.
• Data center management is asked by the local utility company to reduce data center power
usage by some proportion.
• A failure in a primary data center triggers the need to bring up a standby data center.
The Data Center Power Control facility can be used to handle all of these scenarios and many
others.
The Data Center Power Control facility has two pages. The Data Center Power Control Rules page
is used to define rules and the Data Center Power Control page is used to invoke the rules.
Security properties
Protocols and ports numbers
Insight Control power management uses the following ports or external interfaces to aid
administrators in deployment and proper operation of the power management features:
Default port numberProtocolSystem/Device
443SSLHP ProLiant and Integrity iLO
443SSLHP c-Class Onboard Administrator
22SSHServers
5989WBEM HTTPSIntegrity Servers
161SNMPPDU/PDR
50443SSLHP Intelligent PDU (iPDU)
Credentials
Log-in credentials are presented to all systems as configured within the Systems Insight Manager
Security and power management options. Note that use of global credentials will cause all
credentials to be presented to systems during discovery. Untrusted or compromised systems may
then observe the incoming credentials and use them for attacks upon other systems. It is therefore
recommended that only system-specific sign-in credentials be utilized to limit potential disclosure
of log-in credentials.
Security properties 11