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System Management Guide: Operating System and Devices
This section outlines the
procedure used to install a SCSI device on your system. The procedure
has been divided into several tasks that must be performed in order.
- There must be at least
one unused SCSI address on a SCSI controller on the system.
- If you are updating the
product topology diskettes, you need the Product Topology System diskette
which is kept with important records for the system, and the Product Topology
Update diskette which is shipped with the device.
- You must have access to
the operator guide for your system unit.
- Verify that the
interface of the device is compatible with the interface of the SCSI
controllers on the system unit. SCSI controllers with single-ended
interfaces (identified as type 4-X in the About Your Machine
document shipped with your system unit) only supports devices intended to
connect to single-ended interfaces, not devices intended to connect to
differential interfaces.
The following list shows the SCSI
I/O controller types:
TYPE # INTERFACE TYPE
4-1 Single-ended, Narrow
4-2 Differential, Narrow, Fast
4-4 Single-ended, Narrow, Fast
4-6 Differential, Wide, Fast
4-7 Single-ended, Wide, Fast
4-C Differential, Wide, Fast
With appropriate cabling, you can attach:
- Narrow devices to narrow
or wide adapters
- Wide devices to narrow
or wide adapters
- Slow devices to slow or
fast adapters
- Fast devices to slow or
fast adapters
You cannot attach:
- Differential devices to
single-ended adapters
- Single-ended devices to
differential adapters
Determine how many SCSI
controllers are attached to your system unit and where the SCSI controllers
are located. A SCSI controller might be in an adapter slot or built
into the system planar. If your system has a SCSI-2 Fast/Wide Adapter/A
or a SCSI-2 Differential Fast/Wide Adapter/A, remember that it has two SCSI
controllers (SCSI buses). Thus, two SCSI controllers might be found in
an adapter slot or built into the system planar.
You can obtain this information
three different ways:
- Inspecting your system
unit. This method can be used anytime.
- Using a software
configuration command. This method is available only when the operating
system has been installed on the system unit.
- Using the About
Your Machine document shipped with your system unit. This method
is valid only for initial setup and installation of a new system unit.
Look for SCSI I/O controllers in
the adapter slots in the back of the system unit. The adapter slots are
marked with numbers one, two, and so on. Single-ended SCSI I/O
controllers in adapter slots are labeled 4-X. SCSI I/O
controllers are typically located in adapter slot one for desktop models or in
adapter slot eight for floor models.
If you find the letters SCSI
molded into the back of the system unit next to a cable connector, the system
unit has a SCSI I/O controller built into the system planar. The
connector labeled SCSI is the location to connect the built-in SCSI
controller.
This method applies to a system
that already has the operating system installed.
To list the SCSI I/O controllers
on the system, type the following commands:
lscfg -l scsi*
lscfg -1 vscsi*
Examine the list of SCSI
controllers that are displayed. The following sample display from the
lscfg -l scsi* command shows three
SCSI I/O controllers. Controller scsi0 is located in adapter slot
one. The adapter slot number is the fourth digit in the location
value. Controller scsi1 is located in adapter slot two.
Controller scsi2, with location value 00-00-0S, is built into the system
planar and does not have a slot number.
DEVICE LOCATION DESCRIPTION
scsi0 00-01 SCSI I/O Controller
scsi1 00-02 SCSI I/O Controller
scsi2 00-00-0S SCSI I/O Controller
| |
4th digit is A location code of the format 00-00-XX
the adapter means the controller is contained on the
slot number planar and does not have a slot number.
The following is a sample display
from the lscfg -l vscsi* command. A SCSI-2 Fast/Wide
Adapter/A or a SCSI-2 Differential Fast/Wide Adapter/A adapter is located in
adapter slot 3, and the listing shows the two buses on this adapter-- one
internal and one external. The vscsi0 device is connected to the
internal bus. This is indicated by the 0 in the sixth digit
of the location code. The vscsi1 device is connected to the external
bus, which is denoted by the 1 in the sixth digit.
DEVICE LOCATION DESCRIPTION
vscsi0 00-03-00 SCSI I/O Controller Protocol Device
vscsi1 00-03-01 SCSI I/O Controller Protocol Device
|
A `1' in the 6th digit means the device
is connected to the fast/wide external
bus; a `0' means the device
is connected to the internal bus.
Use the About Your
Machine document to determine the SCSI I/O controllers on the system if
the device is being installed during initial setup.
Note:
Incorrect results are produced if controllers have been added after the system
was shipped from the factory.
- Determine the SCSI I/O
controllers installed in adapter slots by scanning the listings from the
About Your Machine document. The following is a sample entry
for a SCSI I/O controller located in an adapter slot:
Slot Adapters Type P/N
1 SCSI I/O Controller 4-1 31G9729
2 SCSI-2 Differential Fast/Wide Adapter/A 4-6 71G2594
3 SCSI-2 Fast/Wide Adapter/A 4-7 71G2589
- Determine whether the system unit has a SCSI controller built into the
planar board. A built-in SCSI I/O controller is standard on some system
units. Your system unit has a built-in SCSI controller if there is a
connector labeled SCSI on the back of the system unit or the About Your
Machine document shows an internal media SCSI device with a blank slot
number. The following is a sample entry from an About Your
Machine document that shows an internal 400 MB SCSI disk driver:
BAY INTERNAL MEDIA DEVICES ADDRESS SLOT P/N
-400 MB SCSI Disk Drive SCSI_ID=0 73F8955
After identifying the SCSI
controllers attached to the system unit, select the SCSI I/O controller you
want to connect the device to. This SCSI I/O controller should have at
least one SCSI address that is not already assigned to another device.
Determine what SCSI addresses are
not already assigned to another device by viewing information about the
devices already connected to the SCSI controllers.
You can use two methods to select
a SCSI I/O controller and a SCSI address on the controller that is not already
assigned to another device:
- Using a software
configuration command if the operating system is already installed on the
system unit.
- Using the About
Your Machine document for initial setup and installation of a new system
unit.
This method applies to a system
that already has the operating system installed.
- Type the following
command to list all the currently defined SCSI devices:
lsdev -C -s scsi -H
- Examine the list of
devices already assigned to SCSI addresses on the SCSI controllers.
Each row in this display shows the logical name, status, location, and
description of a SCSI device. The location for each device begins with
the location of the controller that the device is connected. The
seventh digit of each location field is the SCSI ID or SCSI address for the
device. In the following sample, the SCSI I/O controller with address
00-01, has three devices with SCSI addresses 0, 1, and 2
attached. The SCSI I/O controller with location 00-02 has
one device, with SCSI address 2 attached. The SCSI I/O controller with
location 00-00-0s, that is built into the system planar, has one
device with SCSI address 1 attached.
name status location description
hdisk0 Available 00-01-00-0,0 320MB SCSI Disk Drive
hdisk1 Available 00-01-00-1,0 320MB SCSI Disk Drive
rmt0 Available 00-01-00-2,0 2.3GB 8mm Tape Drive
cdo Defined 00-02-00-2,0 CD ROM Drive
rmt1 Available 00-00-0S-1,0 2.3GB 8mm Tape Drive
|
SCSI address (7th digit)
- Typically, SCSI I/O
controllers support up to seven devices, with SCSI addresses 0
through 6. If the SCSI I/O controller supports wide SCSI, it
supports up to 15 devices per SCSI bus, with addresses ranging from
0 through 15, excluding 7. Combine this and the
information displayed by the previous command to create a list of unassigned
SCSI addresses on each controller. The following is one possible way of
writing this list with the sample information.
Position of SCSI controller Unassigned SCSI addresses
Adapter slot 1 3, 4, 5, 6
Adapter slot 2 0, 1, 3, 4, 5, 6
Built into system planar 0, 2, 3, 4, 5, 6
Adapter slot 3 (external) 0, 1, 2, 3, 4, 5, 6,
8, 9, 10, 11, 12, 13, 14, 15
Adapter slot 3 (internal) 0, 1, 2, 3, 4, 5, 6,
8, 9, 10, 11, 12, 13, 14, 15
Note: 7 is the default SCSI ID value for SCSI
adapters. The default SCSI ID can be changed for most of the supported
SCSI I/O controllers.
- Select an unassigned
SCSI address on one of the controllers, and record the SCSI address and the
controller position for later use.
Use the About Your
Machine document to determine the devices assigned to the SCSI I/O
controllers on the system if the device is being installed during initial
setup.
Note:
Incorrect results are produced if controllers have been added after the system
was shipped from the factory.
- Determine the SCSI
devices assigned to SCSI addresses on the SCSI controllers by examining
"Internal Media Devices." The following is a sample listing from the
About Your Machine document where the built-in SCSI I/O controller
has one device attached and the SCSI I/O controller in adapter slot 1 has two
devices attached:
BAY INTERNAL MEDIA DEVICES ADDRESS SLOT P/N
-400 MB SCSI Disk Drive SCSI_ID=0 73F8955
C -320 MB SCSI Disk Drive SCSI_ID=0 AS 1 93X2355
D -320 MB SCSI Disk Drive SCSI_ID=1 AS 1 93x2355
- Create a list of
unassigned SCSI addresses on each controller. The following is one
possible way of writing this list with the sample About Your
Machine document:
Position of SCSI controller Unassigned SCSI addresses
Built into system planar 1, 2, 3, 4, 5, 6
Adapter slot 1 2, 3, 4, 5, 6
- Select an unassigned
SCSI address on one of the controllers and record the SCSI address and the
controller position for later use.
- Do not begin this task
until you have selected and recorded the:
- Position of the SCSI I/O
controller where the device will be connected (either built-in or identified
by an adapter slot number).
- SCSI address for the
device.
- Determine the physical
position on the system unit to connect the selected SCSI controller.
For example, locate adapter slot 1 on your system unit and the position of the
built-in SCSI adapter. Refer to the operator guide for help.
- Shut down the system
unit using the shutdown command after stopping
all applications that are currently running. To stop the system
immediately without notifying other users, type:
shutdown -F
- Wait for the message
Halt Completed or a similar message to appear.
- Turn off the system unit
and all attached devices.
- Unplug the system unit
and all attached devices.
- Make the physical
connections following the procedure described in the setup and operator
guide.
Note: Do not power on the system unit; proceed to the
next task.
This task makes the device known
to the system. During system unit startup, the operating system reads
the current configuration and detects new devices. A record of each new
device is added to the customized configuration database and each device is
given default attributes.
If the device is being installed
on a new system unit, the operating system must be installed.
Instructions for installing the operating system are included in the
installation guide for the operating system.
Follow this procedure to add a
device to the customized configuration database:
- Plug in the system unit
and all attached devices.
- Turn on all the devices,
but leave the system unit turned off.
- Turn on the system unit
when all the attached devices have completed power-on self-tests
(POSTs).
Note: The startup process automatically detects and records
the device in the customized configuration database.
- Confirm that the device
was added to the customized configuration database using Web-based System
Manager (type wsm, then select Devices), or the SMIT
fast path, smit lsdtmscsi. A list of all defined devices is
displayed. Look at the location field for the SCSI adapter and SCSI
address values of the device you just installed.
This task is not required for
installing a device, but it is recommended.
For additional information about
this task, review "Using the System Verification Procedure" in the operator
guide for the system unit.
- Shut down the system
unit by stopping all application programs running on the system unit.
Enter the shutdown -F command and wait for the Halt
Completed message.
- Turn off the system
unit.
- Set the key mode switch
to the Service position.
- Turn on the system
unit.
- Press Enter when
DIAGNOSTICS OPERATING INSTRUCTIONS is displayed.
- Select DIAGNOSTIC
ROUTINES and press Enter.
- Select System
Verification and press Enter.
- Select the resource
corresponding to the device being installed and press Enter.
- Follow the instructions
for the diagnostic routine for your particular device.
- Wait for the test to
end. A successful test ends with the TESTING COMPLETE menu and a
message stating that No trouble was found. An unsuccessful
test ends with a message stating that A PROBLEM WAS DETECTED and
includes a service request number (SRN). If the test failed, record the
SRN and report the problem to your service representative.
- Press Enter.
- Press F3 several times
until you return to the DIAGNOSTIC OPERATING INSTRUCTIONS.
- Skip to Task 6, item 3
if you are updating the topology diskettes. Otherwise, continue with
this procedure.
- Press F3 to shut down
the system unit.
- Set the key mode switch
to the Normal position, and press the Reset button when you are ready to
resume normal operations.
Product topology diskettes keep
an electronic record of what is attached to your system. This task is
performed during the initial installation of any device that has a Product
Topology Update diskette.
For additional information about
updating product topology diskettes, review the information on using the
diagnostics and service aids in the operator guide.
- Obtain the Product
Topology System diskette that is shipped with the system unit and the Product
Topology Update diskette that is shipped with the new device.
- Shut down the system
unit by stopping all application programs running on the system by typing the
shutdown -F and waiting for a Halt Completed
message.
- Turn off the system
unit.
- For Microchannel
systems, set the key mode switch to the Service position.
- Turn on the system
unit.
- Press Enter when the
DIAGNOSTICS OPERATING INSTRUCTIONS menu is displayed.
- Select Service
Aid and press Enter.
- Select Product
Topology and press Enter.
- Select Device
Installation, ECs and MESs and press Enter.
- Follow the instructions
on your display.
- When the question
Do you have any update diskettes that have not been loaded?
displays, answer Yes, and insert the Product Topology Update
diskette.
- Follow the instructions
on your display.
- If the EC AND MES
UPDATES menu (screen 802311) is displayed and asks for data you do not have,
use the listed function key to commit.
- Follow the instructions
for your display.
- When the PRODUCT
TOPOLOGY SERVICE AID menu (screen number 802110) is displayed, press F3
several times until you return to the DIAGNOSTIC OPERATING INSTRUCTIONS
menu.
- Press F3 once more from
the DIAGNOSTIC OPERATING INSTRUCTIONS menu to shut down the system
unit.
- Remove the
diskette.
- Set the key mode switch
to the Normal position, and press the Reset button when you are ready to
resume normal operations.
- Return the Product
Topology System diskette to its normal storage location.
- Return the Product
Topology Update diskette.
- For customers within the
United States of America, place the Product Topology Update diskette into the
self-addressed prepaid mailer provided and mail it.
- For customers outside
the United States of America, place the Product Topology Update diskette into
the self-addressed prepaid mailer provided and return it to your service
representative. Do not mail it.
Default attributes are assigned
to a supported device when it is added to the customized configuration
database. These attributes are appropriate for typical use of the
device. Change the device attributes when the device you are installing
is not supported or when you need to customize part of the device
operation. For example, you might need to change your tape drive to
write tapes in a lower-density format.
To customize the attributes for a
device, use Web-based System Manager (type wsm, then select
Devices), or the SMIT fast path, smit dev.
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