Conguration Master on primary IDE

SL ± Slave

CS ± Cable Select

Each of the two IDE cables (primary and secondary) normally has two connectors for attaching two IDE devices (master and slave). The C: drive must be on the primary IDE cable, and the tape drive must be on the secondary IDE cable. When choosing your con®guration, remember that two devices on the same IDE cable cannot be accessed at the same time. Performance is increased if you can avoid using both devices that are on the same IDE cable at the same time. A device will lock out another device on the same IDE cable until the operation is complete. Assuming that there are only two supported IDE devices, hard disks and tape drives, and that there can only be one tape drive and a maximum of two hard disks, the recommended con®gurations are:

Con®guration 1

Master on primary IDE:

C: drive

Slave on primary IDE: none

Master on secondary IDE: tape drive

Slave on secondary IDE: none

In the con®guration above, you must con®gure the tape drive as the master (MA) by placing a jumper over vertical pins 5 and 6. There is no contention for the devices.

Con®guration 2

Master on primary IDE:

C: drive

Slave on primary IDE:

D: drive

Master on secondary IDE: tape drive

Slave on secondary IDE: none

In the con®guration above, you must con®gure the tape drive as the master (MA) by placing a jumper over vertical pins 5 and 6. The tape drive does not contend with other devices. The C: drive does contend with the D: drive. If a ®le access to one hard disk is in progress, a ®le access to the other hard disk must wait until the ®rst access is complete before starting the ®le access to the second hard disk.

This con®guration may be best when you have two hard disks and you have a need to run the tape drive while other applications are actively accessing the D: drive. There is no contention between the tape drive and the hard disks.

Con®guration 3

4TR-4 Tape Drive User's Guide

4690 specifications

The IBM 4690 is a renowned point-of-sale (POS) system that has been pivotal in the retail and hospitality industries since its introduction in the late 1980s. Notably associated with IBM’s family of retail hardware and software solutions, the 4690 has transformed the modern retail environment, providing a robust platform for transaction processing and inventory management.

One of the main features of the IBM 4690 system is its powerful software architecture. Designed to efficiently handle high transaction volumes, it integrates seamlessly with various peripheral devices such as barcode scanners, receipt printers, and payment terminals. The system's user-friendly interface allows staff to process sales quickly and efficiently, enhancing the overall customer experience.

In terms of technology, the IBM 4690 operates on a proprietary operating system that supports a variety of programming languages, allowing retailers to customize applications to meet their specific needs. This flexibility not only streamlines operations but also enables retailers to implement specialized services such as loyalty programs and promotions. The hardware is designed for durability and reliability, essential in high-traffic retail environments.

Another significant characteristic of the IBM 4690 is its robust reporting capabilities. The system provides comprehensive sales reports, inventory analyses, and customer insights, all of which are essential for strategic decision-making. This analytical power helps businesses identify trends, forecast demand, and optimize stock levels, ultimately leading to improved profitability.

Furthermore, the IBM 4690 is known for its strong security features. By utilizing advanced encryption technologies and compliance with industry standards, the system helps protect sensitive customer data and payment information, ensuring a safe transaction environment.

The longevity and adaptability of the IBM 4690 system underscore its value in the retail sector. Even with newer technologies emerging, many businesses continue to rely on the robust functionality and proven performance of the 4690. With ongoing support and upgrades, the system remains a reliable choice for retailers looking to enhance their operational efficiency while delivering excellent customer service.

In summary, the IBM 4690 stands out due to its feature-rich software, durable hardware, robust reporting and analytics, and stringent security measures. These characteristics make it an indispensable tool for retailers aiming to thrive in an ever-evolving marketplace.