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Description

Applies to:

Goal

Host channel IDs identify the controller to the host. Some applications require that specific IDs be assigned to host channels before they can recognize the array.

Each host channel has a unique primary and secondary ID available.
Typically host IDs are distributed between the primary and secondary controllers to load-balance the I/O in the most effective manner for the network.
Video - Setting up Channels (12:00)

Solution

Caution Sun StorEdge arrays are preconfigured with host, drive, and RCCOM channel settings.
Sun StorEdge Configuration Service (sscs) cannot configure or show RCCOM channels.
Before configuring a host or drive channel, review the channel assignments using telnet or
sccli. In a redundant-controller configuration, if the RCCOM channel settings are overwritten
using Sun StorEdge Configuration Service, intercontroller communication stops and unexpected
results might occur. For more information, refer to the Sun StorEdge 3000 Family
RAID Firmware User's Guide.

To Add or Delete a Unique Host ID:

Note - To change an ID, you must first delete it and then add the new ID.

1. From the Main Menu if using telnet, choose "view and edit channelS."

2. Select the host channel on which you want to add or change an ID.

3. Choose "view and edit scsi Id."

If host IDs have already been configured on the host channel, they will be displayed.

4. If no host IDs have been configured, choose Yes when the following message is displayed.

No SCSI ID Assignment - Add Channel SCSI ID.

5. If a host ID has already been assigned to that channel, select an ID.

6. To delete an ID, choose "Delete Channel SCSI ID," and then choose Yes to confirm the
deletion.

7. To add an ID, choose "Add Channel SCSI ID."

8. Select a controller from the list to display a list of IDs.

9. Select an ID from the list, and then choose Yes to confirm your choice.

This change does not take effect until the controller is reset.

To Assign an ID From a Different Range:

1. Choose "view and edit channelS" from the Main Menu (telnet) to display the Channel
Status table.

2. Select the channel whose ID range you want to change.

3. Choose "view and edit scsi Id."

4. Select a controller.

Note - To change an ID, you must first delete it and then add the new ID.

5. Choose "Delete Channel SCSI ID," and then choose Yes to confirm the deletion.

This change does not take effect until the controller is reset.

NOTICE: Changes made to this setting will NOT take effect until the controller is RESET.
Prior to resetting the controller, operation may not proceed normally. Do you want to
reset the controller now?

6. If other IDs exist on the selected channel, choose No and repeat Step 5 to delete every
ID configured on the channel.

7. After deleting the last ID, choose Yes to reset the controller.

When all IDs have been deleted, you can assign an ID from a different range.

No SCSI ID Assignment - Add Channel SCSI ID.

8. Choose Yes to assign an ID.

9. Select the controller to which you want to assign an ID.

A list of IDs is displayed. Depending on the current range, adjoining ranges are displayed
at the top and bottom of the ID list, except ranges 0 and 7, which only display one
adjoining range.

10. To change to a different range, select an adjoining range.

IDs in the newly selected range are displayed.

11. Repeat Step 10 until the desired range is displayed.

12. Select an ID from the desired range, and then choose Yes to confirm the assignment.

This change does not take effect until the controller is reset.

NOTICE: Change made to this setting will NOT take effect until the controller is RESET.
Prior to resetting the controller, operation may not proceed normally. Do you want to reset
the controller now?

Fibre Channel Host IDs (FC Only)

In loop mode, up to 16 IDs can be assigned to each Fibre Channel. In point-to-point mode,
only one ID should be assigned to each channel. The array can have a maximum of 32 IDs.

Note: For the Sun StorEdge 3310 SCSI array and the Sun StorEdge 3320 SCSI array,
if you add more than four host channel IDs, the LUNs Per Host ID parameter must
be set to a value less than 32.

For changes to take effect, reset the controller.

See the following documents for additional information:
<Document: 1009168.1>- Sun StorEdge[TM] 33x0/351x Host Channel Port IDs
<Document: 1003561.1>- Sun StorEdge[TM] 33x0 and 351x: Host Channel LUN Assignments
<Document: 1002298.1> -Best Practices: Configuring target id's on Sun StorEdge[TM] 3xx0 arrays

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