For Models 85, 90, 95 and 500. Other models similar. All this was extracted from the latest Type 4 Ref disk. If you do not see some of these fields in your Set and View SCSI Devices, you may not have the hardware that supports that feature.
   I have yet to check the FW Support Disk that updates the system partitions. This may change some.

To start the Set Configuration Program: 
            1. Start the system programs. 
            2. Select Set configuration from the Main Menu. 
            3. Select Set and view SCSI device configuration.  
NOTE:
   You can change only those settings enclosed by brackets ([...]) and which have not been            automatically set by the system.  
   You can change the SCSI adapter ID; however, other SCSI device IDs are set by the system and cannot be changed from this screen. Most SCSI devices, except adapters and built-in controllers, use jumpers or switches to set the ID. 
  
SCSI Configuration Verification
IBM SCSI Adapter Types
SCSI Adapter Address (ID, LUN)
Device Type
Device Address (ID, LUN)
INTERNAL Device Address (ID, LUN)
EXTERNAL Device Address (ID, LUN)
Device Size
Device Interface
Presence Error Reporting 
Operational Error Reporting
Start-up Device
Not Present
Limitations
   95 Planar Max SCSI Adapters
   85 Planar Max SCSI Adapters
   >15 devices on a F/W
   Maximum Viewable SCSI Devices

IBM SCSI Adapter Types (Set by system, not configurable)
IBM PS/2 System Board SCSI
IBM PS/2 System Board PCI SCSI-2 Wide
IBM PS/2 PCI SCSI-2 Wide Adapter/A
IBM PS/2 PCI SCSI-2 Adapter/A
IBM PS/2 SCSI Adapter
IBM PS/2 SCSI-2 Fast/Wide Adapter/A
IBM PS/2 SCSI Adapter w/Cache - 512KB Cache
IBM PS/2 SCSI Adapter w/Cache - 2MB Cache
IBM PS/2 SCSI Adapter w/Cache
IBM PS/2 SCSI Adapter w/Cache - 0KB Cache 
   Note: If you try non-compatible 30 pin SIMMs, you will see this. But after you replace them and reconfigure SCSI devices, the SCSI adapter will see the correct memory.

SCSI Adapter Address (ID) 
   Changes the SCSI ID of the adapter. Under normal circumstances, select <7>. This SCSI ID must be different than the SCSI device IDs of any devices that are attached to the adapter. If there is a conflict with a device attached to the adapter, the SCSI configuration will not be saved.
   The asterisk (*) indicates if the SCSI ID is selected, it will be in conflict with a device attached to the adapter.  If there is a conflict, the SCSI configuration will not be saved.

Device Type Shows the type of SCSI device.
Hard Disk
Direct-access
Sequential Access
Printer
Processor (Hmm, a SCSI processor attachment??? A PII on Fast/Wide??)
WORM Device
ROM Device
Scanner
Optical Memory
Changer
Communications Device
Reserved Devices 11-31
Unknown Device

No floppy? Could be why my Teac FD235HS-7xx isn't recognized...

Device Address (ID, LUN) 
   Shows the SCSI device ID and the logical unit number of the device (ID, LUN).  Every device attached to one adapter must have a unique SCSI device ID.  This ID must be different than the SCSI ID for the adapter. The SCSI device ID for the device is the ID switch setting on the device.

INTERNAL Device Address (ID, LUN) 
   Shows the SCSI Interface Connection, device ID and the logical unit number of the device (ID, LUN). Each device attached to the INTERNAL interface must have a unique SCSI device ID. The SCSI device ID for the device is the ID switch setting on the device.

EXTERNAL Device Address (ID, LUN)
   Shows the SCSI Interface Connection, device ID and the logical unit number of the device (ID, LUN). Each device attached to the EXTERNAL interface must have a unique SCSI device ID. The SCSI device ID for the device is the ID switch setting on the device.

Device Size
   Size of the SCSI hard disk. If the size can't be determined, then this field displays ???????MB.

Device Interface 
   Shows the interface connection of the SCSI device. Internal or External

Presence Error Reporting 
   Set this field to <ENABLED>, if you want a POST error to display when the system is started, and this SCSI device is turned off or not connected.
   Set this field to <DISABLED>, if you do not want a POST error to display when the system is started, and this SCSI device is turned off or not connected. (Useful for scanners!)

Operational Error Reporting 
   Set this to <ENABLED>, if you want a POST error to display when the system is started, and this SCSI device has any operational error.
   Set this to <DISABLED>, if you want the system to continue the power-on process even though this SCSI device has any operational error.

Start-up Device
    Set this to <ENABLED> if this device can be started-up with the operation system or set to <DISABLED> if this device cannot be started-up with the operating system.

Not Present
   Set this to <KEEP>, if you want to save the configuration information for this device even when the device is turned off or not connected.
   Set this to <REMOVE>, if you do not want to save the configuration information for this device even when the device is turned off or not connected.

95 Planar Max SCSI Adapters
If there are more than eight SCSI adapters installed, only the first eight enabled adapters (starting from slot one) will be configured.  Any devices attached to the additional adapters will not be configured. (the 90 won't hit this)

85 Planar Max SCSI Adapters
If there are more than seven SCSI adapters installed, only the system board SCSI and the first seven enabled adapters (starting from slot one) will be configured.  Any devices attached to the additional adapters will not be configured.

>15 devices on a F/W
If more than 15 devices are attached to one SCSI adapter or the system board SCSI connector,  only the first 15 devices will be configured.

Maximum Viewable SCSI Devices
For Narrow SCSI, if >60 devices are installed the menu will be abbreviated. For wide SCSI, if >100 devices are installed the menu cannot be displayed. (Due to memory constaints).