Chapter 2 Connecting Peripheral Devices; Using Scsi Devices; Setting The Scsi Id - Power Computing PowerTower Pro User Manual

Chapter 2, Connecting Peripheral Devices
Using SCSI devices
Your computer has two separate SCSI buses-a high-speed 10 MB per second
internal SCSI bus for the built-in devices like the hard disk and the CD-ROM
drive and a 5 MB per second bus primarily for external devices. You can
connect up to seven devices in a
SCSI chain
to each bus.
External SCSI devices, such as scanners, hard drives, CD-ROM drives, and
removable-cartridge drives can be connected to your computer through the
SCSI port on the back of your computer. Note that there is also an internal
SCSI cable connected to this SCSI 5 MB per second chain in case the main
internal SCSI bus is completely filled.
Connecting a SCSI device involves four steps:
• Setting the device's SCSI ID number
• Ensuring proper termination
• Connecting the device
• Installing a software device driver (if one is required)
Setting the SCSI ID
Each device in a SCSI chain requires a unique number called a SCSI ID, which
the computer uses to identify the device. The computer itself is assigned SCSI
ID 7 and the internal hard disk is assigned SCSI ID
O.
Every other device you
install must have a unique number from 1 to 6.
Drives provided by Power normally come with SCSI ID pre-set as follows:
SCSIID
Device
0 primary internal hard drive (terminated)
1
optional additional hard drive
3 CD-ROM drive
5 optional removable-cartridge drive
7
motherboard (self-terminated)
PowerTower Pro User's Guide
For Technical Support, Call 1-800-708-6227