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v Redundant connection
v Redundant cooling and optional power capabilities
v Systems-management capabilities
v TCP/IP offload engine (TOE) support
Reliability, availability, and serviceability
Three important computer design features are reliability, availability, and
serviceability (RAS). The RAS features help to ensure the integrity of the data that
is stored in the server, the availability of the server when you need it, and the ease
with which you can diagnose and correct problems.
Your server has the following RAS features:
v 3-year parts and 3-year labor limited warranty for machine type 7918
v Automatic error retry and recovery
v Automatic restart on nonmaskable interrupt (NMI)
v Automatic restart after a power failure
v Backup basic input/output system switching under the control of the Integrated
v Built-in monitoring for power, temperature, voltage, and power-supply redundancy
v Cable-presence detection on most connectors
v Chipkill memory protection
v Diagnostic support for ServeRAID and Ethernet adapters
v Error codes and messages
v Error correcting code (ECC) L2 cache and system memory
v Information and diagnostics LED panels
v Integrated Management Module II (IMM2)
documentation on the IBM Systems Director CD, or see http://www.ibm.com/
servers/systems/management/director/resources/.
The addition of the optional Ethernet daughter card provides failover capability to
a redundant Ethernet connection with the applicable application installed. If a
problem occurs with the primary Ethernet connection and the optional Ethernet
daughter card is installed on the server, all Ethernet traffic that is associated with
the primary connection is automatically switched to the optional redundant
Ethernet daughter card connection. If the applicable device drivers are installed,
this switching occurs without data loss and without user intervention.
The server supports a 900-watt power supply and a water loop.
The server comes with an integrated management module II (IMM2). When the
IMM2 is used with the systems-management software that comes with the server,
you can manage the functions of the server locally and remotely. The IMM2 also
provides system monitoring, event recording, and network alert capability. The
system-management connector on the rear of the server is dedicated to the
IMM2. The dedicated system-management connector provides additional security
by physically separating the management network traffic from the production
network. You can use the Setup utility to configure the server to use a dedicated
systems-management network or a shared network.
The Ethernet controllers in the server support TOE, which is a technology that
offloads the TCP/IP flow from the microprocessor and I/O subsystem to increase
the speed of the TCP/IP flow. When an operating system that supports TOE is
running on the server and TOE is enabled, the server supports TOE operation.
See the operating-system documentation for information about enabling TOE.
Note: As of the date of this document, the Linux operating system does not
support TOE.
Management Module II (IMM2)
9
Chapter 1. Introduction
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