5–2 Enclosure 4200 Family LVD Disk Enclosures User Guide

Enclosure Power

The power supply and fan assembly mount in the rear of the enclosure. The supply is auto-ranging and operates on an AC input voltage of 100 to 240 VAC ±10%, 50 to 60 Hz

± 5% (90 to 264 VAC, 47 to 63 Hz).

There are three DC outputs:

+5 VDC for the EMU, I/O module, backplane, and drives

+12.3 VDC for the drives.

+12.5 VDC for the fans.

The nominal output of each supply is 377W, with a peak output of 425W. Either power configuration, single or dual, can support an enclosure with a full complement of disks, fans, EMU, and I/O module.

A single power supply, the standard configuration, supports sequential drive spin-up.

The Compaq recommended dual power supply configuration can support simultaneous drive spin-up.

The power supply circuitry provides protection against:

Overloads

Short circuits

Thermal protection against cooling system faults.

Power supply status and diagnostic information is reported to the EMU using the voltage, current, and temperature signals.

See Appendix B, “Specifications,” for the enclosure power specifications.

Power Options

The enclosure can accommodate one or two power supplies. One power supply is sufficient to power the enclosure with a full complement of drives.

NOTE: Installing two power supplies, a redundant power configuration, eliminates the power supply as a single point of enclosure failure. This is the preferred, high-availability configuration.

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Compaq 4200 Family manual Enclosure Power, Power Options

4200 Family specifications

The Compaq 4200 Family represents a pivotal line of desktop computers designed by Compaq, aimed at fulfilling the increasing demand for reliable, efficient computing solutions in both business and home environments in the late 1990s. This series offered a diverse array of models, catering to varying levels of performance and user requirements, ultimately setting a standard for its time.

One of the standout features of the Compaq 4200 series was its robust performance, achieved through the integration of Intel Pentium processors, which delivered superior speed and multitasking capabilities. This made the 4200 family ideal for running productivity software, database applications, and everyday tasks efficiently. Depending on the model, users could choose configurations with varying clock speeds, allowing for tailored performance to meet specific user needs.

The Compaq 4200 Family also incorporated advanced technologies that enhanced user experience. Among these was the implementation of a high-capacity hard drive, which provided ample storage space for documents, applications, and multimedia files. This was complemented by increased RAM options, ensuring smooth performance and the ability to run multiple applications simultaneously without significant lag.

Graphics capabilities were another notable feature of the 4200 series. Many models offered integrated graphics options, allowing users to engage in light gaming and multimedia tasks without the need for additional hardware. Furthermore, the inclusion of PCI slots enabled users to upgrade their systems with dedicated graphics cards, enhancing visual performance for more demanding applications.

For connectivity, the Compaq 4200 Family included a variety of ports, such as USB, serial, and parallel connections, allowing users to easily connect peripherals like printers, scanners, and external storage devices. The inclusion of a built-in modem facilitated internet connectivity, making it convenient for users to access online resources.

Another characteristic of the Compaq 4200 series was its user-friendly design. The systems were constructed with accessibility in mind, featuring easy-to-open cases for upgrades and repairs. Additionally, Compaq provided comprehensive support resources, thereby ensuring that users could easily troubleshoot and maintain their systems.

In conclusion, the Compaq 4200 Family was emblematic of its era, showcasing a blend of impressive performance, flexibility, and user-centric design. It served a wide range of users, from professionals in corporate environments to families requiring dependable home computing solutions, making it a significant player in the landscape of late 1990s computing technology.