Master on primary IDE:

C: drive

Slave on primary IDE: none

Master on secondary IDE:

D: drive

Slave on secondary IDE: tape drive

In the con®guration above, you do not need to change the jumper on the tape drive, but you may need to change the jumper on the D: drive. Some hard disks have three possible jumper settings:

vmaster

vmaster with a slave attached

vslave

If you have one of these hard disks and it is currently a ªmaster with no slaveº and you are adding the tape drive as a ªslaveº, then you must change the jumpers on the hard disk from ªmasterº to ªmaster with a slave attachedº. The

C:drive does not contend with other devices. The D: drive does contend with the tape drive. If a tape operation is in progress, a ®le access to the D: drive must wait for the tape drive to complete a command before starting the ®le access. Any application waiting for the ®le access to complete cannot run during this time.

Alternatively, if a ®le access to the D: drive is in progress, the tape drive must wait for the ®le access to complete before a tape operation can begin. This may cause an underrun and the tape drive must stop, rewind a little, and start forward again, which impacts tape drive performance. The con®guration above may be best when you have two hard disks and you have no need to run the tape drive while other applications are actively accessing the D: drive. There is no contention between the C: and D: drive.

Con®guration 4

Master on primary IDE: none

Slave on primary IDE: none

Master on secondary IDE: tape drive

Slave on secondary IDE: none

The con®guration above assumes that all of your hard disks are SCSI instead of IDE. In this con®guration, 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.

2.Refer to your store controller documentation to determine if your store controller supports the cable select (CS) feature. With the cable select feature there is a special cable and the placement of the devices on the cable connectors determines whether a device is master or slave if the devices are set to CS. Most store controllers do not use this cable feature.

Chapter 2. Tape Drive Installation 5

Page 18 Page 20
Page 19
Image 19
IBM 4690 manual Slave on primary IDE none Master on secondary IDE
Page 18 Page 20

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.
Top Page Image Contents