Installing Scsi Devices; Guidelines For Installing Optional Scsi Devices - Compaq Deskpro ap230 Hardware Reference Manual

Installing SCSI Devices

Guidelines for Installing Optional SCSI Devices

C-2 Hard Drive Installation Guidelines
Select models feature a Wide Ultra2 SCSI host adapter that supports up
to fifteen wide internal and external SCSI devices. Select models come
with an internal SCSI hard drive preinstalled. Additional high-
performance SCSI devices can be added to these select models.
When installing additional SCSI devices, you must adhere to the
following guidelines:
The Wide Ultra2 SCSI host adapter supports up to 15 wide SCSI


devices.
Every SCSI device must have a unique identification (ID) number


(0 - 15). The SCSI host adapter identifies signals to and from a
SCSI device by its SCSI ID number rather than its location.
Moving a SCSI device from one position to another on the SCSI
chain does not affect the communication between the controller and
the SCSI device. The reserved and available SCSI ID numbers for
SCSI devices are as follows:
0 is reserved for the hard drive.
 
1 through 4 are available.
 
5 is reserved for a CD-ROM drive.
 
6 is available.
 
7 is reserved for the SCSI host adapter.
 
8 - 15 are available.