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Installing Drives in the Internal Bays 10-7
Figure 10-4. Daisy-Chaining External SCSI
Devices
9. Replace the computer cover, and reconnect the
computer and peripherals to their power sources.
10. Connect the external device(s) to power.
For each external device, plug the socket end of the
power cable into the alternating current (AC) power
receptacle on the back of the device. Plug the other
end of the power cable into an AC power source.
11. Install any required SCSI device drivers.
See Chapter 3, “Installing and Configuring SCSI
Drivers,” in the system User’s Guide for informa-
tion and instructions.
12. Test the SCSI devices.
Test a SCSI hard-disk drive by running the SCSI
Devices Test Group in the system diagnostics. See
Chapter 5, “Running the System Diagnostics,” for
information.
To test a SCSI tape drive, also refer to the documen-
tation for the tape drive software to perform a tape
drive backup and verification test.
C
onfiguring the Boot Device
If the user plans to boot the system from a hard-disk
drive, the drive must be attached to the primary (or boot)
controller or SCSI host adapter card. The primary con-
troller is automatically determined by the specific system
configuration according to the following general
guidelines:
•
If the
PCI SCAN SEQUENCE
category in the System
Setup program is set to
EMBEDDED FIRST
, the built-
in Ultra/Wide host adapter is the primary controller.
•
If the
PCI SCAN SEQUENCE
category in the System
Setup program is set to
SLOT DEVICES FIRST
, the
system boots from a SCSI host adapter card in an
expansion slot. If more than one SCSI host adapter
card is installed, the boot order is determined by the
particular expansion slot the card is installed in. In
descending order of precedence, the boot order for
the Dell PowerEdge 4100 system is PC15, PCI4,
PCI8, PCI7, and PCI6.
Partitioning and Formatting SCSI
Hard-Disk Drives
You may need to use different programs than those pro-
vided with the operating system to partition and format
SCSI hard-disk drives. See Chapter 3, “Installing and
Configuring SCSI Drivers,” in the system User’s Guide
for information and instructions.
external SCSI
devices
computer