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Ultra ATA Drive Guidelines and Features

4.1Ultra ATA Jumpers

Ultra ATA drives are configured by means of jumper settings. These systems use drives ship with the jumpers preset to the cable-select mode; therefore, no jumper setting changes are required on factory preinstalled, replacement, or option drives. With cable-select, the drive is configured as either Master (Drive/Device 0) or Slave (Drive/Device 1) by its physical attachment to the cable.

If you purchase a third-party hard drive, refer to the documentation included with the drive kit to ensure proper cable installation and configuration.

✎All drives on a controller channel need to have their jumpers either in the cable-select mode or have the individual drive jumper installed on the appropriate Master (Drive/Device 0) or Slave (Drive/Device 1) position.

4.2Ultra ATA Cables

When installing a second device on either the primary or secondary controller, you must use an industry standard 80-conductor Ultra ATA cable for optimal performance. These cables have a maximum length of 18 inches and a maximum distance of 6 inches between the two devices for a two-drive cable.

Drives operating at speeds faster than those of the Ultra ATA-33 devices require industry-standard 40-pin, 80-conductor cables to maintain the higher data transfer rates possible with the improved technology.

When using Ultra ATA-100, -66, and slower -33 drives in the same system, each drive will operate at its appropriate data transfer rate.

4.2.1 Cable Layout

The faces of industry-standard cable connectors are color coded for easy recognition:

■System board connector = blue face

■Device 0 connector = black face

■Device 1 connector = gray face

✎The color code of an industry-standard cable is valid only if the drive’s jumper is in the cable-select position.

 

Service Reference Guide

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