3.1.2 Controller Module Fault Tolerance

There are two dedicated slots, 18 and 19, provided for installing the controller module. Once installed, the controller does not need to be configured. Since the controller module is a critical component, it is recommended to have a second controller module installed in the hub for backup purposes.

When two controller modules are installed in the hub, one is active and the other will be a standby. Both the active and standby controller modules monitor and modify the hub operating conditions such as temperature and power. This redundant monitoring and control capability enables the standby controller module to be ready to take over from the active controller module should the active controller module fail.

When the standby controller module takes over from the active controller module, all the installed modules perform a fast reboot. Fast reboot results in all the 8260 modules equipped with onboard memory (NVRAM) to automatically load the configuration stored there. This occurs regardless of the current DIP switch settings on the modules. Fast reboot facilitates immediate resumption of the hub activity following the failure of the active controller module and takeover by the standby controller module. However, note that the takeover of the operation by the standby controller module is disruptive to the operation of the network and the users attached to the network.

Note: 8250 media modules do not have onboard memory to store configuration information. Therefore, following a reboot due to the failure of the active controller module, they will be configured by the DIP switch settings on the module (in an unmanaged hub) or via the configuration stored in the management module (in a managed hub).

If two controller modules are installed in a hub that is already powered up, the first controller module to be installed becomes the active controller module and the second controller module to be installed becomes the standby controller module. This is regardless of the slot in which the controller modules are installed. However, if two controller modules are installed in a hub that is not yet powered up, the controller module installed in slot 18 becomes the active controller module when the hub is subsequently powered up. Also, after a hub is reset due to power outage, pressing the reset button on the active controller module, or through 8260 DMM commands, the controller module in slot 18 becomes the active controller module and the controller module installed in slot 19 becomes the standby controller module.

3.1.3 Installing and Configuring the Fault Tolerant Controller Module

To install the controller module:

Unpack the controller module from the shipping carton.

Remove the blank faceplate from slot 18 and/or 19 depending on which slot is for installation.

Insert the controller module into the top and bottom board guides and slide it into the hub until it is flush with the front of the hub.

Tighten the two spring-loaded screws securely.

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IBM 8260 manual Controller Module Fault Tolerance

8260 specifications

The IBM 8260 is a significant entry in the realm of enterprise servers, recognized for its performance, scalability, and robust features designed to cater to demanding business environments. It primarily serves as a high-capacity server for large organizations, capable of handling extensive workloads and complex applications without compromising speed or efficiency.

One of the standout features of the IBM 8260 is its powerful processing capabilities. It typically comes equipped with multiple processor units based on the IBM POWER architecture, which is renowned for its high-performance computing. This architecture allows the server to execute numerous simultaneous tasks, making it ideal for environments that require multitasking and high throughput.

Memory capacity is another key characteristic of the IBM 8260. Depending on the specific configuration, it can support substantial amounts of RAM, ensuring that applications can run effectively without the bottlenecks often associated with data-intensive tasks. This is crucial for enterprises that rely on real-time data analytics, large database management, and resource-heavy applications.

In terms of storage, the IBM 8260 offers flexible options. It supports a variety of storage solutions, including solid-state drives (SSDs) and traditional hard drives, catering to different performance and capacity needs. This scalability in storage helps organizations manage their data effectively while ensuring quick access and retrieval times.

Connectivity is also a prominent feature of the IBM 8260. The server includes advanced networking capabilities, supporting various protocols and technologies that facilitate fast data transfer and communication between devices. This enhances overall network performance, essential for businesses that depend on cloud computing and distributed computing environments.

Additionally, the IBM 8260 is designed with a focus on reliability and availability. It incorporates redundant components, such as power supplies and cooling systems, minimizing the risk of downtime. This is critically important for enterprises that require continuous availability of services.

The server’s management features are also noteworthy. IBM provides a suite of management tools that allow IT administrators to monitor performance, configure hardware settings, and troubleshoot issues seamlessly. This ease of management is bolstered by automation capabilities, enabling organizations to enhance operational efficiency.

In conclusion, the IBM 8260 stands out in the competitive server landscape due to its high processing power, extensive memory and storage options, advanced connectivity, reliability features, and robust management tools. Such attributes make it a viable choice for organizations seeking to enhance their IT infrastructure and streamline their operations effectively.