HP Insight Management Agents architecture for Windows
servers
Technology brief, 2nd edition
Introduction.................................................................................................................................................................................................... 3
A first look at the Insight Management Agents architecture .................................................................................................... 3
HP Insight Management agents ............................................................................................................................................................ 4
Foundation Agent................................................................................................................................................................................... 4
Server Agent ............................................................................................................................................................................................. 5
Storage Agent .......................................................................................................................................................................................... 5
NIC Agent .................................................................................................................................................................................................. 6
The SNMP Services component............................................................................................................................................................. 6
Microsoft SNMP Agent Service ........................................................................................................................................................ 6
Management Information Base ........................................................................................................................................................ 7
Enhancing SNMP Security ................................................................................................................................................................... 7
Performing SNMP Sets ......................................................................................................................................................................... 7
Delivering SNMP Traps ........................................................................................................................................................................ 7
Additional agents monitoring and alerting functionality ........................................................................................................... 9
The HP Insight Event Notifier ............................................................................................................................................................ 9
Process Monitoring .............................................................................................................................................................................. 10
The System Management Homepage framework ....................................................................................................................... 12
System Management Homepage web server .......................................................................................................................... 13
System Management Homepage .................................................................................................................................................. 13
HTTPS, single sign-on, and secure task execution ................................................................................................................. 14
Replicate Agent Settings capability .............................................................................................................................................. 14
Considerations when installing and configuring the Insight Agents ................................................................................... 15
Updating Insight Management Agents ....................................................................................................................................... 15
Understanding port use with Insight Management Agents and HP SIM ..................................................................... 15
Configuring the data collection interval ..................................................................................................................................... 15
Setting the server role ........................................................................................................................................................................ 16
Additional support for Insight Management on HP ProLiant servers ................................................................................. 17
HP Insight Management WBEM (WMI) Providers .................................................................................................................. 17
Support for ProLiant 100-series servers ...................................................................................................................................... 18
Support for Insight Management Agents on ProLiant Gen8 servers ............................................................................. 18
Conclusion .................................................................................................................................................................................................... 19
For more information ............................................................................................................................................................................... 21
Introduction
This technology brief is an overview of the HP Insight Management Agents for HP ProLiant servers
running the Windows server operating system. Our goal is to provide an architectural overview of
the entire set of client-side software components on ProLiant servers that provide integrated
manageability using the HP Systems Insight Management solution. To get the most from this paper,
you should already be familiar with HP Systems Insight Manager (HP SIM) in managed server
environments.
A first look at the Insight Management Agents architecture
HP Insight Management Agents provide a robust solution for monitoring and managing ProLiant
servers using HP Systems Insight Manager. To provide this functionality, which extends beyond that
of simple SNMP-based management, the Insight Management Agents architecture requires the
installation of a set of software components on each managed server. Although we commonly refer
to them as the Insight Management Agents, you should actually think of these as three different
groups of software components, each performing a core function in the Insight Manager
architecture.
The first group consists of the Insight agents and the individual device drivers. There are four
different agents in the Insight architecture for Windows–based servers. As a group, they collect all of
the management information about the server, usually through the various device drivers. This
information is reported and displayed in the Systems Insight Manager console and the System
Management Homepage. This includes information about the server’s health, key operating system
statistics, and information about the server hardware. The Insight agents and the HP drivers that
support them are available through the HP Service Pack for ProLiant at
http://h18013.www1.hp.com/products/servers/service_packs/en/index.html.
The SNMP Services are the second component of the architecture. They include the Microsoft SNMP
Agent Service that provides the basic set of SNMP services between the managed server and HP
SIM.
The third component group is the System Management Homepage (SMH) framework. In addition to
acting as a web server to deliver detailed information about the managed server as part of the SIM
console, it also implements the core functionality that makes unique SIM features such as single
sign-on and replicate agents settings possible.
Figure 1 shows an overview of the Insight Management Agents architecture and the basic
interoperation of the component groups. The sections that follow describe the roles of each of the
components in the Insight Management architecture and provide more details about the
architecture.
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Figure 1: This is top-level overview of the HP Insight Management Agents architecture.
HP Insight Management agents
The four HP Insight Management agents make up the core of the architecture on managed servers.
As a group, they are responsible for collecting all of the management information about the server
and its software environment and storing the data in the Windows Registry. Using SNMP protocol,
Insight processes such as HP SIM server and the System Management Homepage (or other SNMPbased management tools) access the information and display it to the user. Some of the Insight
agents perform additional tasks within the Insight architecture.
Foundation Agent
The HP Insight Foundation Agent collects high-level system information about the managed server.
As shown in Table 1, most of the information that the Foundation Agent collects comes from the
Windows OS itself. The Foundation Agent stores the information in the Windows Registry as
Management Information Base (MIB) data.
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Table 1: System information that the Foundation Agent collects
Information collected
Source
High-level server information
(Host name, System role, OS installed)
Windows OS
System Performance
(OS statistics, CPU and memory utilization)
Windows OS
File System information
(Logical Drives, Drive utilization)
Windows OS
HP software installed
Windows Registry
Clustering information
Windows OS
In addition to collecting high-level system information, the Foundation Agent has additional roles. It
is responsible for the low-level execution of all SNMP Sets within the Insight architecture. We will
cover this function later in the section on SNMP Services.
Server Agent
The HP Insight Server Agent collects the basic server information, including the server’s key
subsystems configurations and health information. Table 2 lists the categories of information that
the Server Agent collects and the sources for this information.
Table 2: Information the Server Agent collects
Information collected
Source
Server hardware information
(Product ID, serial #, board revisions)
SM BIOS
CPU configuration
SM BIOS
Memory installed
SM BIOS and System Management driver
PCI devices and system slots
SM BIOS, Windows OS
Sensor information
System Management (Health) driver
(fans, temperature, power supplies and redundancy)
Critical events (hardware errors)
HP Integrated Management Log (IML)
Management processor information
iLO
BladeSystem enclosure information
ROM BIOS
Storage Agent
The HP Insight Storage Agent collects and delivers the core storage-related information, including
information on storage controllers and their logical and physical drives. The Storage Agent supports
HP SmartArray controllers as well as Fiber Channel Host Bus Adapters (HBAs) and SAS HBAs. It also
provides basic information on storage box enclosures. Using the HP storage drivers, the Storage
Agent obtains most of this information from the disk controller firmware, although it obtains some
from the drives (Table 3).
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Table 3: Storage information that the Storage Agent collects
Information collected
Source
Storage controller information
(firmware revision, battery status)
Controller firmware
Logical drive information
(fault tolerance, rebuild status)
Controller firmware
Physical Drive information
(size, speed, location, performance data, pre-failure)
Controller firmware
Drive firmware
Storage box infrastructure
(fans, power supplies, temperature)
Enclosure Services interface via controller
firmware
The Storage Agent and Insight Management Agents collect and report information on storage that
belongs to the single host server. The Insight Agents do not report on multi-host storage on the
network, such as SANs. This information is managed using WBEM-based Storage Management
Initiative Specification (SMI-S) Storage Providers. You can find additional information on HP support
for SMI-S at http://h18006.www1.hp.com/storage/smis.html.
NIC Agent
The HP Insight NIC Agent collects and stores information about the network controllers installed in
the managed server. The NIC Agent gathers some of the information through the NIC miniport
driver. The Windows OS collects other NIC information and stores it in MIB-II in the registry. Table 4
lists the categories and sources of information for the network controllers.
Table 4: Networking information that the NIC Agent collects
Information collected
Source
Adapter Information (firmware, speed, location, MAC)
MIB-II, Windows OS, NIC miniport
driver
Interface information (Interface name, IPv4 address)
MIB-II, Windows OS
Ethernet statistics
NIC miniport driver, Windows OS
NIC teaming configuration
Teaming intermediate driver
The SNMP Services component
The SNMP Services enable the flow of basic management information between the managed server
and HP SIM. These components process SNMP Gets and Sets, as well as the SNMP Traps used in
alerting.
Microsoft SNMP Agent Service
The Microsoft SNMP Agent Service provides the core set of SNMP services that the HP Insight
Management system uses on a managed server. This includes the following services:
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 Fulfilling SNMP Gets to deliver information from the HP MIB to authorized requesting services. In
the Insight architecture, the SIM server or a process associated with the SMH framework typically
requests MIB information.
 Processing SNMP Sets, which are used to change SNMP configuration information as well as alert
thresholds for server management information
The Microsoft SNMP Agent Service provides a standard SNMP interface to external processes. But
its internal structure is specific, using its own set of application program interfaces (APIs). On a
managed server, the HP Insight Agents will only work with the Microsoft SNMP Agent Service.
Management Information Base
The Management Information Base defines all of the information collected about the managed
system. In the HP Insight Architecture, the four Insight Agents collect the MIB information and store
it in an extension to the Windows Registry. When a process requests MIB information, the Microsoft
SNMP Agent Service uses the Insight Agents to retrieve information from the Windows Registry
before delivering it to the process, typically the HP SIM server or the System Management
Homepage.
Enhancing SNMP Security
The SNMP protocol provides basic security and access authorization using community strings. But
standard SNMP protocol does not encrypt the community strings or the management information
that it sends or receives. This leaves the information vulnerable to interception (being snooped) over
the network. The HP Insight Management framework provides a more secure management
environment by establishing a separate certificate-based HTTPS communication channel between
the SIM server and the managed server. This channel is actually a part of the SMH framework, and
the Insight Management framework uses it as the transport mechanism for all secure information.
The Microsoft SNMP Agent Service sends other less sensitive information to the HP SIM server over
standard SNMP.
To enhance security, the Insight Management Agents architecture, using the Microsoft SNMP Agent
Service, restricts SNMP writes to the local host only. This prevents any external agent from executing
writes to the managed server. The HP SIM server is still able to implement SNMP Sets because it
sends its commands over the encrypted link. These commands then execute locally.
Performing SNMP Sets
SNMP Sets are used to define the alerting thresholds for management information or to set SNMP
configuration information. Because these operations are sensitive, the Insight Management
architecture does not send SNMP Sets over the open SNMP connection between SIM and the
managed server. Instead, the Insight Management architecture sends them over the secure HTTPS
channel link that SIM establishes with the System Management Homepage framework. These Set
requests then go to the Microsoft SNMP Agent Service. It, in turn, passes them to the appropriate
HP SNMP Extension Agent and then to an Insight Management Agent. In the HP Insight
Management Agents architecture, the Foundation Agent receives and executes all SNMP Sets as
part of its extended functionality.
Delivering SNMP Traps
One function of a management system is to deliver alerts whenever the values for key system
parameters exceed or fall below their threshold values or whenever important system events occur.
For example, you may want to receive an alert whenever disk utilization exceeds 85%. The Insight
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Management Agents architecture uses SNMP Trap notifications to deliver the alerts to the SIM
server, which processes and then displays them on the SIM console.
Several different components of the Insight Management architecture, including parts of each of the
four Insight Agents, monitor the MIB and process the information to determine when to issue alerts:
 Remote Alerter Threads—Each Insight Management agent has a remote alerter thread that
monitors its portion of the HP MIB in the Windows Registry for registry change events. When the
thread detects a change that requires an alert, such as a threshold being exceeded, it writes an
event to the Windows Event Log with a pre-defined Event ID.
 The HP Trap Thread—This extension to the Microsoft SNMP Agent Service scans the Windows
Event Log for alert events that have been written to it by the Remote Alerter Threads. It also
detects other key events in the log that should generate an alert.
 The Microsoft SNMP Agent Service—Based on the events selected by the HP Trap Thread, the
SNMP Agent Service generates the actual SNMP Traps and sends them to the SIM server for
display on the management console.
Figure 2 shows the Insight Manager alerting architecture. This is a slightly more detailed view of one
section of the overall Insight Agents architecture shown in Figure 1.
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Figure 2: Architecture of HP Insight Manager alerting
Additional agents monitoring and alerting functionality
The HP Insight Agents architecture provides additional functionality that is unique to the HP SIM
solution environment.
The HP Insight Event Notifier
The HP Insight Event Notifier service provides a mechanism for the Insight Management Agents
architecture to send e-mail notifications to specified recipients when alert events occur on the
managed server. The Insight Event Notifier service is an alternative alerting mechanism. It is
designed for management of a small server installation (typically fewer than 10 servers) that does
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not require the full set of capabilities available through HP Systems Insight Manager. Figure 2 shows
where the Event Notifier service fits within the Insight Manager alert architecture.
Although the Insight Event Notifier is part of the Insight Management architecture on managed
servers, it is disabled by default. You can activate this service locally on a managed server through
the Computer Management administrative tool.
Once you enable the service, you can use the Event Notifier Configuration Wizard to configure the
outbound Simple Mail Transfer Protocol (SMTP) server for sending e-mail alerts as well as the list of
notification recipients for the Event Notifier service. The configuration wizard is part of the HP
Management Agents program group on the managed server (Figure 3).
Figure 3: Running Event Notifier configuration
Process Monitoring
The HP Insight Management Agents architecture can also monitor any processes running on a
managed server and send alerts when they start, stop, or restart. This functionality is part of the
Foundation Agent. You can configure it with the HP Management Agents configuration utility. It is
accessible from the Control Panel of any managed server with the Insight Management Agents
architecture installed (Figure 4).
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Figure 4: Running the HP Management Agents configuration utility
Figure 5 shows the Process Monitor tab for the Management Agents configuration utility. With
Process Monitor, you can configure the Insight Management architecture to send alerts to HP SIM
on the Start, the Stop, or the Start and Stop of any process on the server. The default setting for
monitoring each process is None. In that case, the Insight Management architecture will not send an
alert when the process is started or stopped.
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Figure 5: Setting process monitoring in the Management Agents configuration utility
The System Management Homepage framework
The System Management Homepage framework plays several roles in the Insight Management
Agents architecture. It retrieves and displays the detailed management information for a managed
server through the System Management Homepage. The framework also provides a set of services
that are integral to delivering many of the special features that are part of the Systems Insight
Management solution. These include a web server and its various web applications as well as the
Secure Task Execution and Configure Agent Settings services. Figure 6 shows a detailed view of the
framework, which is part of the Insight Management Agents architecture shown in Figure 1.
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Figure 6: The System Management Homepage framework
System Management Homepage web server
At the heart of the System Management Homepage framework is an Apache-based web server and
an infrastructure for supporting a set of plug-in web applications that we developed. The web
applications retrieve the detailed information on the managed server from the MIB. The apps put
the data into a meaningful format and create the HTML pages that comprise the System
Management Homepage. You can then use a web browser to view the pages that the SMH web
server of each managed system delivers.
The SMH web server also provides the execution platform for additional web-based applications
that are part of the Insight Management system. These include the web-based implementations of
HP Diagnostics and the HP Array Configuration Utility, as well as applications such as the HP Version
Control Agent. Although it is Apache-based, the web server is a locked-down, non-extensible
version of the Apache server that is not accessible for general-purpose use by other applications
running on the server.
System Management Homepage
The System Management Homepage is a set of active web pages that aggregate a system’s
management information and part of the overall HP Systems Insight Manager solution. As shown in
Figure 7, the management console displays general descriptive information about the managed
server, and presents information that the HP SIM server gathered over the standard SNMP
connection. Often, when you drill-down from HP SIM to view the detailed information for the
managed server, you are in fact viewing the System Management Homepage for that server. The
browser displays the System Management Homepage in a separate window. In this instance, the
System Management Homepage for the managed server was invoked when an administrator clicked
on the Health Status choice from the SIM console. You can also access the SMH for a server directly
at Port 2381 (a reserved IANA port) of the server’s IP address. This requires OS password
authentication. If you have configured the Insight Agents properly, at either installation or
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subsequently using the Configure and Repair Agents capability in HP SIM, you are automatically
logged into the System Management Homepage when accessing it through HP SIM. This is part of
the HP SIM single sign-on functionality.
Figure 7: SIM management console and SMH for a ProLiant server
HTTPS, single sign-on, and secure task execution
An additional role of the SMH framework is to provide a secure communications environment for
the Insight Management Agents architecture. SNMP does not provide secure, encrypted
communications between the managed server and the remote requesting process. To address this,
the SMH framework implements HTTPS, a separate SSL-based secure communications link and
protocol between each managed server and the HP SIM server. While HP SIM continues to use the
standard SNMP service to retrieve basic MIB information, all sensitive traffic (including threshold
Sets, configuration data, and other commands) is sent over this secure HTTPS link.
A configurable trust relationship also provides certificate-based authentication between the
managed servers and the SIM server. This authentication eliminates the need for a user to log in to
each managed server and forms the basis for the Insight Manager single sign-on functionality.
Without the SMH framework, SIM single sign-on would not be possible. The trust model also allows
SIM to perform automated tasks on managed servers without storing the credentials of the user
who sets up the task. This is called Secure Task Execution.
Replicate Agent Settings capability
The SMH framework implements the remote configuration capabilities of the Insight Management
Agents architecture using the Configure Agent Settings functionality, which is part of the Replicate
Agent Settings capability. To accomplish this, the service establishes a protocol that allows HP SIM
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to query the SMH framework for the configuration settings of various components of the client-side
Insight architecture. This includes the Insight agent settings, general SNMP settings, the SMH
security settings, and others. The SIM server and the SMH framework can then pass changes to
configuration settings back and forth between them over the HTTPS link. When the Replicate Agent
Settings service receives the new parameters, it changes the configuration settings on the managed
server.
The Replicate Agents Settings capability in HP uses this core service of the SMH framework. In HP
SIM, you can use the Replicate Agents Settings functionality to duplicate the agent settings of one
reference server across an entire group of managed servers. Without the SMH framework and the
Replicate Agents Settings service installed on the managed servers, the Replicate Agents Settings
functionality in HP SIM cannot work.
Considerations when installing and configuring the Insight
Agents
There are several important factors you must take into account while running the installation and
configuration processes of Insight Agents.
Updating Insight Management Agents
In addition to the latest device drivers and utilities for HP ProLiant servers, the HP Service Pack for
ProLiant contains updated Insight Management Agents. This provides a tested and trouble-free
method for keeping the Insight Agents and drivers on managed servers up to date.
Understanding port use with Insight Management Agents and HP SIM
The various software components that comprise the HP SIM environment use several different
system ports for communications. Table 5 lists key ports and the software components that use
them.
Table 5: HP SIM port usage
System Port(s)
Usage
161, 162
SNMP traffic between Microsoft SNMP Agent
Service and HP SIM server
2381
Secure HTTPS link between SIM server and SMH
Framework
2301
Used by SIM to identify management capabilities
in a managed server.
50000
Serving web pages from HP SIM to the
management console browser
When you use HP SIM as a management solution, it is important to keep the port addresses open
within the internal networks. Internal firewalls that block these ports can cause parts of HP SIM to
function improperly.
Configuring the data collection interval
The Insight Management Agents collect information on the managed server at regular intervals. This
is known as polling. You can configure how frequently the agents collect data from the managed
server, setting the data collection interval from as short as every five seconds to once every hour.
15
Using a short data collection interval allows the agents to provide more frequently updated
information on the server. You may find this useful for closely monitored systems. But a shorter data
collection interval consumes more system resources and can affect system performance at some
level. The default value for the data collection interval is two minutes. You can configure the data
collection interval under the SNMP Settings tab of the Management Agents configuration utility,
from the SMH, or from HP SIM. The data collection interval does not affect the delivery of SNMP
traps. Traps are event-driven and are sent immediately whenever a condition requiring an alert
occurs.
Setting the server role
You can use the Insight Management Agents architecture to define server roles for any servers that
HP SIM manages. The Server Role is a user-defined string of up to 256 characters. You can typically
use this string to identify a server’s function in the network or even its physical location. You can set
the Server Role in several ways:
 Using Configure and Repair Agents in HP SIM
 From the SMH of the managed server
 From the Management Agents configuration utility
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You can use the Server Role field as one of the search criteria in the HP SIM Advanced Search
function. This allows it to find groups of servers based on their Server Role and to create SIM
Collections from these groups. Figure 8 shows an Advanced Search screen using Server Role as a
search criterion.
Figure 8: Advanced Search in HP SIM using Server Role as the criterion
Additional support for Insight Management on HP
ProLiant servers
Support for management of HP ProLiant servers using HP SIM continues to expand in response to
the increasing need for more systems management in complex environments.
HP Insight Management WBEM (WMI) Providers
The HP Insight Management Web-Based Enterprise Management (WBEM) Providers offer an
alternative to the SNMP-based Insight Agents for collecting and delivering managed system
information to HP SIM. WBEM is a defined standard for a set of management and Internet
technologies intended to unify management of distributed computing environments. The
Distributed Management Task Force (DMTF) develops and maintains the WBEM standard.
The HP WBEM Providers are based on Windows Management Instrumentation (WMI), Microsoft’s
implementation of the WBEM standard. WBEM Providers deliver the management information they
collect to the WMI service, part of the Windows operating system. The WMI service acts as the
client-side interface to HP SIM in the same way that that the Microsoft SNMP Service does in the
Insight Agents architecture. The WBEM Providers client-side architecture also incorporates the
System Management Homepage framework.
Systems using WBEM Providers and those running Insight Agents can co-exist within HP SIM. HP
SIM will discover and transparently manage servers running either type of client-side management
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architecture. You can also install both WBEM Providers and Insight Agents on single managed server
if needed.
Support for ProLiant 100-series servers
Beginning with our G6 servers, the HP Insight Management Agents and HP SIM support ProLiant
100-series servers. Previously, ProLiant 100-series servers supported only the Intelligent Platform
Management Interface (IPMI) for system management. HP Systems Insight Manager 5.3 provides full
integration with ProLiant 100-series G6 servers, including discovery and association with the Lights
Out 100 management processors on the servers.
Support for Insight Management Agents on ProLiant Gen8 servers
ProLiant Gen8 servers support the new Agentless Management model that is part of the iLO
Management Engine. With Agentless Management, iLO and iLO firmware monitor the health of
server and server components and supply this information directly to Insight Manager, including
Traps and Alerts. Agentless Management allows you to manage the server using HP Systems Insight
Manager without installing the SNMP agents. The new Agentless Management Service (AMS) is
software that you can install and use in conjunction with Agentless Management to deliver more
information about the server and the OS than with Agentless Management alone.
Although ProLiant Gen8 servers feature the new Agentless Management model, HP still supports the
Insight Management Agents on these systems. There are several reasons that you may want to
continue using the Insight Management Agents, including one or more of the following.
 Insight Management Agents support the collection and reporting of some data that HP does not
yet support with Agentless Management or with Agentless Management and AMS.
 You may want to stay with a single server management model in data centers with both Gen8
servers and older ProLiant servers.
Figure 9 shows the set of information that the SNMP Agents supply to Systems Insight Manager
compared to that of Agentless Management. SNMP Agents deliver more information than Agentless
Management, particularly for NICs and external storage.
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Figure 9: This is a comparison of the server health data supplied by the SNMP Agents and the data supplied
using Agentless Management. Asterisks indicate areas where SNMP Agents deliver a more extensive set of data
than the Agentless Management.
Based on the server data that you need to monitor, there are several specific situations when you
should install the agents if you are managing a ProLiant Gen8 server using HP SIM 7.0 or HP Insight
Control 7.0. They include:
 When you need to monitor server performance using HP Insight Control Performance
Management
 When you need to monitor HP storage devices other than the HP Smart Array controller
 When you use a third-party SNMP product, such as Computer Associates or Tivoli
 When you need to monitor additional MIBs for the server, including the full MIB2, RFC1514 Host
Resource MIB, MSFT LANMAN MIB, or VMware MIB.ost agents
 When you want to use a system health threshold for disk or processor utilization
Conclusion
The HP Insight Management Architecture for Windows servers offer you a robust solution for
monitoring and managing HP ProLiant servers. It provides SNMP-based system management that
integrates into the HP SIM solution framework. It is also more secure than traditional SNMP
management solutions. Although HP introduced WBEM-based Providers as an alternative client-side
management solution, we continue to support the Insight Management Agents. We support the
SNMP Agents across the ProLiant server line, including ProLiant 100-series servers and the ProLiant
Gen8 servers.
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For more information
Visit the URLs listed below if you need additional information.
Resource description
Web address
HP Systems Insight Manager
http://www.hp.com/go/hpsim
Information on HP System Management
Homepage
http://www.hp.com/go/SMH
HP Systems Insight Manager 7.0 and HP
Agentless Management overview
http://h20000.www2.hp.com/bc/docs/support/SupportManual/
c03201001/c03201001.pdf
Tech Brief
HP Insight Management WBEM (WMI)
Providers for Windows
http://h18004.www1.hp.com/products/servers/management/wb
em/index.html
HP Service Pack for ProLiant
Download
http://h18013.www1.hp.com/products/servers/service_pa
cks/en/index.html
Send comments about this paper to [email protected]
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© Copyright 2012 Hewlett-Packard Development Company, L.P. The information contained herein is
subject to change without notice. The only warranties for HP products and services are set forth in the
express warranty statements accompanying such products and services. Nothing herein should be
construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or
omissions contained herein.
TC1203832, June 2012