Adaptec 2020SA User Guide - Page 150

Setting SCSI IDs, Changing SCSI Termination on the Controller, Enabling CD Drive Support

Page 150 highlights

About SCSI See Mixing SE Devices with LVD Devices on page F-3 for more details. Setting SCSI IDs For each controller channel, the SCSI IDs of the devices must be unique numbers between 0 and 15. The controller, itself a SCSI device, is usually set to ID 7 by default. SE drives usually support IDs between 0 and 6. SCSI enclosures that use SCSI drives with 80-pin SCA connectors typically assign the drive ID automatically when the drive is inserted. You don't need to set device IDs with such enclosures unless your enclosure requires it. For details, refer to the enclosure User's Guide. The RAID controller ID can be changed to any ID from 0 through 7 using the ARC utility. Note: Do not change the controller ID unless the change is absolutely necessary. Changing SCSI Termination on the Controller The default termination for the controller is Auto Mode and you will probably never need to change this setting. However, if you do need to change the termination, you can use the SCSISelect Controller SCSI Channel Termination option to change the setting to Disabled. For details, see page A-12. All these SCSI controllers support multimode SCSI termination. Enabling CD Drive Support Note: Adaptec SCSI RAID controllers do not support CD drives in Linux systems. If you attached a CD drive to the controller, you need to configure the controller BIOS as follows to make the CD drive work: 1 While the system is starting, press Ctrl-A when the controller displays its message on the screen. F-2

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F-2
About SCSI
See
Mixing SE Devices with LVD Devices
on page F-3
for more
details.
Setting SCSI IDs
For each controller channel, the SCSI IDs of the devices must be
unique numbers between 0 and 15. The controller, itself a SCSI
device, is usually set to ID 7 by default. SE drives usually support
IDs between 0 and 6.
SCSI enclosures that use SCSI drives with 80-pin SCA connectors
typically assign the drive ID automatically when the drive is
inserted. You don’t need to set device IDs with such enclosures
unless your enclosure requires it. For details, refer to the enclosure
User’s Guide.
The RAID controller ID can be changed to any ID from 0 through 7
using the ARC utility
.
Note:
Do not
change the controller ID unless the change is
absolutely necessary.
Changing SCSI Termination on the Controller
The default termination for the controller is
Auto Mode
and you will
probably never need to change this setting. However, if you do
need to change the termination, you can use the SCSI
Select
Controller SCSI Channel Termination option to change the setting
to
Disabled
. For details, see
page A-12
.
All these SCSI controllers support multimode SCSI termination.
Enabling CD Drive Support
Note:
Adaptec SCSI RAID controllers do not support CD
drives in Linux systems.
If you attached a CD drive to the controller, you need to configure
the controller BIOS as follows to make the CD drive work:
1
While the system is starting, press
Ctrl-A
when the controller
displays its message on the screen.