HP Onboard Administrator - Manual (Page 12)

Introduction 12
components in device bays in the front of each enclosure, Onboard Administrator communicates with iLO to
control servers, and with a microcontroller to control options such as storage blades. A separate
microcontroller controls power to the interconnect modules.
After components are powered, the Onboard Administrator begins thermal management with Thermal Logic.
The Thermal Logic feature in BladeSystem c-Class minimizes power consumption by the enclosure fan
subsystem by reading temperature sensors across the entire enclosure. Then, Thermal Logic changes fan
speed in different zones in the enclosure to minimize power consumption and maximize cooling efficiency.
Controlling components
Onboard Administrator uses embedded management interfaces to provide detailed information and health
status for all bays in the enclosure including presence detection signals in each bay, i2c, serial, USB, and
Ethernet controllers. Onboard Administrator also offers information on firmware versions for most
components in the enclosure and can be used to update those components.
Interfaces
Each c-Class enclosure has several external management interfaces that connect the user to Onboard
Administrator. The RJ-45Ethernet jack is the primary interface. This interface provides network access to the
Onboard Administrator and management interface on all server blades (iLO), storage blades (TBM), and
interconnect modules.
A serial port on the Onboard Administrator module provides full out-of-band CLI access to the Onboard
Administrator and is used for Onboard Administrator firmware flash recovery.
USB ports on Onboard Administrator are used to connect external DVD drives to support the enclosure DVD
feature. In addition, you can order an optional internal DVD drive for the c3000 Enclosure. The USB port on
the Onboard Administrator might have a sticker on the port, stating that it is reserved for future use. To use
the USB port with Onboard Administrator firmware version 2.00 or later, remove the sticker.
All c-Class enclosures support two enclosure link connectors that provide private communications among
enclosures linked with CAT5 cable. The enclosure link-up connector provides an enclosure service port that
allows you to temporarily connect a laptop personal computer to any linked enclosure Onboard
Administrator for local diagnostics and debugging.
The KVM Module option for the c3000 Enclosure plugs into the rear bay adjacent to interconnect module 1
and provides a VGA connector and two more USB connectors for the c3000 enclosure. This KVM module
enables the enclosure KVM feature for the c3000 enclosure. The VGA connector attaches to an external
VGA monitor and external USB keyboard and mouse to provide access to all the server video consoles or the
Onboard Administrator CLI or Insight Display.
The new c7000 Onboard Administrator Module with KVM adds a VGA connector to the c7000 Onboard
Administrator, enabling the Enclosure KVM feature for the c7000 Enclosure. The Active c7000 Onboard
Administrator Module with KVM provides the same Enclosure KVM capabilities as the optional c3000 KVM
Module. An external USB hub (not included) must be used to connect a USB DVD drive at the same time as
the KVM USB for keyboard and mouse for simultaneous Enclosure KVM and Enclosure DVD functionality. The
Standby Onboard Administrator Module with KVM will only provide access to the Onboard Administrator
CLI login which enables the logged in user to force a takeover.
Each c-Class enclosure includes an embedded Insight Display on the front of the enclosure which provides
status and information on all the bays in a c-Class enclosure and diagnostic information if the Onboard
Administrator detects a problem in the enclosure. The Insight Display configures key settings in the Onboard
Administrator including the IP address of the Onboard Administrator.