Sun Fire V445 Server Administration Guide - SCN Research

power supplies, fan trays, and USB components. These components can be removed
and installed without issuing software commands. Hot-plug and hot-swap
technology significantly increase the system’s serviceability and availability, by
providing you with the ability to do the following:
■ Increase storage capacity dynamically to handle larger work loads and to improve
system performance
■ Replace disk drives and power supplies without service disruption
For additional information about the system’s hot-pluggable and hot-swappable
components, see “About Hot-Pluggable and Hot-Swappable Components” on
page 79.
n+2 Power Supply Redundancy
The system features four hot-pluggable power supplies, any two of which is capable
of handling the system’s entire load. Thus, the four power supplies provide N+N
redundancy, enabling the system to continue operating should up to two of the
power supplies or its AC power source fail.
For more information about power supplies, redundancy, and configuration rules,
see “About the Power Supplies” on page 83.
ALOM System Controller
Sun Advanced Lights Out Manager (ALOM) system controller is a secure server
management tool that comes preinstalled on the Sun Fire V445 server, in the form of
a module with preinstalled firmware. It lets you monitor and control your server
over a serial line or over a network. The ALOM system controller provides remote
system administration for geographically distributed or physically inaccessible
systems. You can connect to the ALOM system controller card using a local
alphanumeric terminal, a terminal server, or a modem connected to its serial
management port, or over a network using its 10BASE-T network management port.
For more details about the ALOM system controller hardware, see “About the
ALOM System Controller Card” on page 71.
For information about configuring and using the ALOM system controller, see the
following:
■ “About the ALOM System Controller Command Prompt” on page 97
■ “Logging In to the ALOM System Controller” on page 98
■ “About the scadm Utility” on page 100
■ Sun Advanced Lights Out Manager (ALOM) Online Help
Chapter 5 Managing RAS Features and System Firmware 93