Introduction

The Flex System Chassis Management Module is a hot-swap Flex System Enterprise Chassis module that you use to configure and manage components in your Flex System Enterprise Chassis environment.

Note: The Flex SystemChassis Management Module is compatible with only Type 7893, 8721, and 8724 chassis.

The Flex System Enterprise Chassis automatically detects installed modules and node devices and stores their vital product data (VPD). You can configure and manage Flex System Enterprise Chassis components from a remote location via an Ethernet connection through the Flex System Chassis Management Module web interface, the Flex System Chassis Management Module command-line interface (CLI), or SNMPv1 and SNMPv3. You can also configure and manage Flex System Enterprise Chassis components through a local serial connection by using the Flex System Chassis Management Module CLI.

Note: You can also configure some I/O modules directly, by using an external I/O-module port. See the documentation that comes with each I/O module for information.

The Flex System Chassis Management Module, referred to throughout this document as the CMM, provides system-management functions for all devices in the Flex System Enterprise Chassis. It provides a mini-USB serial-management connector for local management connection and a 10/100/1000 Mbps remote management and console (Ethernet) connector for local or remote management connection.

Note: An optional cable kit with adapters is available to convert the CMM mini-USB connector for RJ-45, DB-7, or standard USB cable connection. See Lenovo ServerProven compatibility for available Flex System Enterprise Chassis options.

The Flex System Enterprise Chassis comes with at least one CMM and supports CMM redundancy. Only one CMM can be primary in each Flex System Enterprise Chassis. If you install a standby CMM, it remains inactive until it is switched to act as the primary CMM.

Note:
  • If two CMMs are installed in a Flex System chassis, they should be of the same type.
  • The illustrations in this document might differ slightly from your hardware.

If your Flex System Enterprise Chassis is configured for redundant operation and a second CMM is installed, both will have the same level of firmware after the primary CMM updates the standby CMM after it is installed. The primary and standby CMMs can have the same IP address, or they can have different IP addresses so that the standby CMM can be accessed while it is inactive. The firmware must support redundant CMM function, to ensure changeover of control from the primary CMM to the standby CMM. The latest level of CMM firmware is available at Lenovo Data Center Support site.

The management processor in the CMM communicates with the system-management processor in each compute node to support features such as compute node power-on requests and error and event reporting.

The product name, serial number, and media access control (MAC) address are on the identification label on the side of the CMM. Information that you need to connect to the CMM for the first time is on the network access tag that is attached to the front of the CMM (see CMM network access tag for information). Note that the network access tag might have been removed from your CMM during installation. The following illustration shows the controls, indicators and connectors on the CMM.

Graphic of the CMM with call outs for release handle, default IP address location, and MAC address location.

You can obtain up-to-date information about your CMM and other Flex system products at Lenovo Flex system information center.

Parent topic: Flex System Chassis Management Module hardware