Intergraph TD-x10 Setup, System Reference Manual

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Deskside systems are equipped with an Ultra SCSI controller for internal SCSI devices. The internal
drive bays are located above the floppy disk drive bay. These bays are designed to accommodate
1.0-inch and 1.6-inch high devices. If you install a non-Ultra SCSI device, data transfer rates are
limited to the specification of the device.
CAUTION Connecting a non-compliant SCSI-1 device to a TD/TDZ-x10 or InterServe x05 system may cause your
system to stop working, or lead to other unpredictable results.
To install an internal SCSI device:
1. If a device already occupies the location in which you are adding the new device, remove the
existing device. If installing the device into an empty drive bay, remove the support or slide
bracket from the drive bay.
2. Mount the device to the support or slide bracket, if necessary.
3. If installing a non-bracketed device, slide the device through the faceplate and secure it directly to
the chassis.
If installing a bracketed device, slide the bracket through the faceplate, if installing into one of the
forward drive bays; then secure the bracket to the chassis.
4. If installing into the system hard disk drive bracket in a desktop system, replace the bracket,
ensuring the bracket tabs engage the slots on the peripheral brace.
NOTE ISA Slot 1 can be used only if the system hard disk drive is less than 1.6-inches high.
5. Connect the SCSI cable and power cable to the device. The SCSI cable is keyed to ensure proper
insertion, so that the red stripe (pin 1) is adjacent to the power connector.
6. After closing the base unit, install the device drivers and configure the device according to the
vendor’s instructions, if necessary.
Adding External SCSI Devices
You can add single-ended SCSI devices to the system by connecting them to the SCSI port on the back
of the base unit. Additional SCSI option boards (adapters) can be installed to support external SCSI
devices as well. Refer to the “Adding Option Boards” section later in this chapter to install new
boards.
Cable Length Requirements
The desktop systems are equipped with an Ultra SCSI controller (AIC 7860) for all internal and
external SCSI devices. By default, the controller arbitrates with each device (that is, initiates sync
negotiation) to determine the data rate the device will use to transfer data (5, 10, or 20 MHz). If the
target device complies with the 20 MHz SCSI specification, then the data transfer rate will be 20 MHz.
If another device complies with a different specification, then date transfer will be at the lowest data
rate without changing any settings for the controller or the target device.
The deskside systems use a Fast SCSI-2 controller (AIC-7850) for all external SCSI devices. Fast
SCSI-2 devices comply with the 10 MHz SCSI specification. You should install only Fast SCSI-2
devices to the external SCSI port. If you install an Ultra SCSI device, data transfer rates are limited to
the SCSI-2 specification. If you install a SCSI-1 device, data transfer rates are limited to the
specification of the device.
CAUTION Connecting a non-compliant SCSI-1 device to the system may cause your system to stop working, or
lead to other unpredictable results.