System reliability guidelines

component while the server is running. (Orange can also indicate touch points on hot-swap components.) See the instructions for removing or installing a specific hot-swap component for any additional procedures that you might have to perform before you remove or install the component.

vWhen you are finished working on the server, reinstall all safety shields, guards, labels, and ground wires.

vFor a list of supported optional devices for the server, see http://www.ibm.com/ servers/eserver/serverproven/compat/us/.

To help ensure proper cooling and system reliability, make sure that the following requirements are met:

vEach of the drive bays has a drive or a filler panel and electromagnetic compatibility (EMC) shield installed in it.

vIf the server has redundant power, each of the power-supply bays has a power supply installed in it.

vThere is adequate space around the server to allow the server cooling system to work properly. Leave approximately 50 mm (2.0 in.) of open space around the front and rear of the server. Do not place objects in front of the fans. For proper cooling and airflow, replace the server cover before turning on the server. Operating the server for extended periods of time (more than 30 minutes) with the server cover removed might damage server components.

vYou have followed the cabling instructions that come with optional adapters.

vYou have replaced a failed fan within 48 hours.

vYou have replaced a hot-swap drive within 2 minutes of removal.

Handling static-sensitive devices

Attention: Static electricity can damage the server and other electronic devices. To avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them.

To reduce the possibility of damage from electrostatic discharge, observe the following precautions:

vLimit your movement. Movement can cause static electricity to build up around you.

vThe use of a grounding system is recommended. For example, wear an electrostatic-discharge wrist strap, if one is available.

vHandle the device carefully, holding it by its edges or its frame.

vDo not touch solder joints, pins, or exposed circuitry.

vDo not leave the device where others can handle and damage it.

vWhile the device is still in its static-protective package, touch it to an unpainted metal surface on the outside of the server for at least 2 seconds. This drains static electricity from the package and from your body.

vRemove the device from its package and install it directly into the server without setting down the device. If it is necessary to set down the device, put it back into its static-protective package. Do not place the device on the server cover or on a metal surface.

vTake additional care when you handle devices during cold weather. Heating reduces indoor humidity and increases static electricity.

8IBM System x3250 Types 4364 and 4365: Installation Guide

4364, 4365 specifications

The IBM 4365 and 4364 are significant models in IBM’s lineup of mainframe computers, designed primarily for large organizations requiring robust processing capabilities. These models emerged during the late 1980s and early 1990s, serving to enhance the performance and versatility of business computing environments.

The IBM 4365, launched in 1985, is known for its sophisticated architecture and large processing power, capable of managing substantial transaction volumes. It features the advanced Multiple Virtual Storage (MVS) operating system, which allows for efficient processing and management of numerous tasks simultaneously. The MVS system contributes to high reliability and availability, factors paramount for businesses that rely on uninterrupted service.

One of the standout characteristics of the IBM 4365 is its ability to scale. Users could configure the system with multiple processors, allowing it to handle increasing workloads effectively. This scalability is made possible through its use of IBM's proprietary technology, which optimizes resource allocation to improve efficiency. The system could support an impressive number of users, making it ideal for large enterprises.

In contrast, the IBM 4364, released slightly later, is a more modest version aimed at smaller organizations but still renowned for its reliable performance. It too operates the MVS operating system, but its configurations are tailored for less intensive processing needs. It is designed with cost-effectiveness in mind, making it suitable for businesses that require robust computing without the extensive capabilities of larger systems.

Both models benefit from IBM's robust security features, ensuring data protection and compliance with industry standards. Additionally, they offer significant storage options, utilizing IBM's innovative storage technologies to retain vast amounts of data efficiently.

Among the key technologies that defined these mainframes were the use of advanced input/output capabilities and compatibility with a broad range of peripheral devices. This integration allowed organizations to enhance productivity while maintaining seamless operations across various applications.

Overall, the IBM 4365 and 4364 exemplify the evolution of mainframe technology during their era, offering remarkable processing power, superior reliability, and scalability while paving the way for future innovations in enterprise computing. Their legacy remains influential in shaping the landscape of business technology today, as organizations continue to rely on mainframe processing for critical operations.