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Connecting Peripheral Devices
16
PowerCenter Pro User’s Guide
For Technical Support, Call 1-800-708-6227
Using SCSI devices
Your computer has two separate SCSI buses - a high-speed 20 MB per second
UltraSCSI bus for internal high-speed devices like hard drives and RAID arrays,
and a 5 MB per second bus primarily for internal devices such as the CD-ROM
drive, removable cartridge devices such as Zip and Jaz drives, and external SCSI
devices.
You can connect up to seven devices on the 5 MB per second SCSI bus. The
internal SCSI cable, attached to the internal UltraSCSI bus, supports a
maximum of two internal hard drives in the Minitower enclosure and one
internal hard drive on the Low Profile enclosure.
External SCSI devices, such as scanners, hard drives, CD-ROM drives, and
removable-catridge drives, can be connected to your computer using the 25-
pin standard SCSI connector on the rear of the computer. An external 50-pin
SCSI port may be available on the back of your UltraSCSI PCI card. This
connector supports wide SCSI devices. At this time, the use of the external
UltraSCSI connector is not supported with the PowerCenter Pro computer.
Using the external high-speed SCSI connector may lead to conflicts and
performance issues with the internal drives.
Connecting a SCSI device involves four steps:
■
Setting the device’s SCSI ID
■
Ensuring proper termination
■
Connecting the device
■
Installing a software device driver (if one is required)
2 Conn Periph Page 16 Friday, June 6, 1997 9:41 AM
Summary of Contents for PowerBase Low-Profile
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