Integrated Lights-Out Technologies; Remote Console Technologies; Text-Based Remote Console With First-Generation Ilo; Text-Based Remote Console With Ilo 2 - HP AB500A - Integrated Lights-Out Advanced Technology Brief

Host power and fault isolation logic monitors the host system for any unexpected behavior such as a
system power fault or PCI bus fault. The iLO management processor records power faults and
operates normally on auxiliary power to provide key functions such as web browser access, alerting,
and access to event logs. The host power and fault isolation logic allows either the management
processor or the host processor to reset independently of the other. Server resets have no effect on the
iLO processor; it provides administrators with continuous access to the server, which means that they
can upgrade the iLO firmware without resetting or affecting the host server.

Integrated Lights-Out technologies

Through key iLO technologies such as remote console, virtual media, virtual power, and virtual serial
port, system administrators can control iLO-managed servers efficiently from a remote location.
Administrators can deploy new servers, install patches and hot-fixes, perform routine maintenance
tasks, or troubleshoot platform issues from any remote location.

Remote Console technologies

Having full access to the host server using remote console technologies is one of the most important
reasons to use an iLO processor. Remote console technologies provide system administrators with
access to the managed server at any time, even before the OS is installed and if the OS is not
functioning. For example, being able to see the host server console on the management client allows
administrators to watch the entire boot process remotely.
Remote console technologies include a text-based console, a Java-based graphical console, and a
Microsoft® ActiveX™-based graphical console. First-generation iLO and iLO 2 differ in the way that
they capture text-based and graphical data; therefore, the following sections describe each method.
Additional remote console technologies include screen capture and replay capabilities, a shared
remote console, and Terminal Services integration.

Text-based remote console with first-generation iLO

The first-generation iLO processor supports a text-based remote console. iLO monitors the screen
frame buffer through the PCI bus. When it detects changes in the text information, iLO captures,
encrypts, and transmits the data—including screen positioning information—to text-based client
applications. The advantages of this method are compatibility with standard text-based clients, good
performance, and simplicity. Disadvantages include the inability to display non-ASCII or graphical
information, and the possibility that screen positioning information (displayed characters) might be
sent out-of-order.
System administrators can use the text-based remote console to view the managed server and interact
with the Option ROM setup menus during POST. For ProLiant ML, DL, and SL servers, administrators
must have a license key to access the remote console after the OS loads and goes into graphical
mode.

Text-based remote console with iLO 2

The iLO 2 management processor has a DVR engine that uses the digital video output (DVO) port of
the video adapter to directly access video output for high performance video monitoring. This method
significantly increases iLO 2 graphical console performance. However, the available digital video
stream represents graphical data (pixels); therefore, it does not provide a true text-based (ASCII
characters) console. This video data cannot be rendered by a text-based application such as a telnet
or Secure Shell (SSH) client.
The redirection of text during the server boot process is available as an iLO Standard feature on iLO 2
systems through the end of POST. Redirection of either text or graphics with iLO 2 after POST requires
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