Adaptec SBC-599 - Manual (Page 74)

64 SBC-596/599 User's Manual
Installation and Setup
The SBC-599 is equipped with an Adaptec AIC-7880 Ultra Wide
PCI-to-Ultra SCSI host adapter which provides a powerful
multitasking interface between your computer’s PCI bus and
SCSI devices (disk drives, CD-ROM drives, scanners, tape
backups, removable media drives, etc.). Up to a total of 15 SCSI
devices can be connected to the internal or external SCSI
connector on AIC-7880.
If you need to configure the SCSI, the onboard SCSI Select
configuration utility allows you to change host adapter settings
without opening the computer or handling the board. The SCSI
Select utility also contains a utility to low-level format and
verifies the disk media on your hard disk drives.
SCSI Configuration Guidelines
Before installing your SCSI devices, you should understand the
basic SCSI concepts described in this section. The information
will help you set up your host adapter and devices so they
function properly.
SCSI ID Numbers
Each device attached to the host adapter, as well as the host
adapter itself, must have a unique SCSI ID number (0-15). The
SCSI ID serves two purposes:
- It uniquely defines each SCSI device on the SCSI bus.
- It determines the device’s priority on the SCSI bus.
SCSI ID7 has the highest priority. The priority of the remaining
IDs, in descending order, is 6 to 0 and 15 to 8.
Note: SCSI IDs play no role in determining the order in which
devices are cabled to the host adapter.