SCSI Connections

Assigning SCSI Device IDs

Fast, Wide Differential SCSI IDs (C160/C180/C200 Upgrades)

Before assigning a SCSI device ID to your drive, you need to check your SCSI device IDs. To check which SCSI device IDs are available and assign an ID to your device, follow these instructions which use Table 28.

1Write in the type of each device currently connected to your system under the heading “Fast, Wide Differential SCSI Device Drives” and each drive’s SCSI device ID under the heading “Device ID.”

2Add your new drive to the table.

3Check to see what SCSI device IDs are not used. You may use ID numbers 0 through 6 and 8 through 15 if they are not already in use. If the default ID on your drive does not conflict with any existing drive IDs, use that ID. If your default address conflicts with an existing drive ID, assign a new fast, wide SCSI device ID to your drive. Refer to the drive’s installation documentation for information on changing the device ID.

CAUTION:

 

Do not use SCSI device ID 7 for any device.

 

Table 28

 

Fast, Wide Differential SCSI Device Drives and Device ID

 

 

 

 

 

 

 

 

Fast, Wide Differential SCSI Device Drives

Device ID (Address) Number

 

 

(ID 7 not available)

 

 

 

 

 

 

 

 

 

 

1st Internal Device

______________________________

__________

 

2nd Internal Device

______________________________

 

 

__________

 

1st External Device

_______________________________

__________

 

2nd External Device

_______________________________

__________

 

3rd External Device

_______________________________

__________

 

4th External Device

_______________________________

__________

 

 

 

 

NOTICE: You can have no more than 15 SCSI devices connected to a fast, wide bus.

 

 

 

 

 

 

Ultra, Wide SCSI IDs

Before assigning a SCSI device ID to your drive, you need to check your SCSI device IDs. To check which SCSI device IDs are available and assign an ID to your device, follow these instructions which use Table 29.

170