FS6200 Server System Implementation Guide - Public Support ...

The topic “I/O Configuration” in Section 3 of this guide provides the mapping between
physical HBA ports and information displayed by the ODT SC + command or entries
displayed by Device Manager. This can be helpful in identifying which HBA ports should
provide access to the device. It also describes how to disable and enable an HBA port
Note: You perform the following procedure in the I/O engine environment.
1. Using Device Manager, open an HBA port that should provide access to the device
and scan for hardware changes outboard of the HBA. Give this operation time to
complete and see if the device is discovered.
If the device is not discovered, continue with the remaining steps. While these
remaining procedures are usually safe to perform during production use of the
system, there is some risk that they might further destabilize the situation.
If the missing device is not critical to your operation it is recommended that you defer
these actions until a time when a system interruption, if necessary, causes the least
impact. Also, be aware that these steps might take much longer to complete while the
system is running a heavy I/O workload.
2. Use Emulex OCManager from the Operations Server to access the HBAs in the I/O
engine environment.
If the MCP is actively using tape devices outboard of the port, wait for these tape jobs
to complete as the next step causes any active tape jobs to quit with an error.
a. Use OCManager to reset the port.
b. Refresh the OCManager display and check again whether the device is present
outboard of the HBA port. End the OCManager program.
3. Restart Device Manager and see if the device is now visible. If not, use Device
Manager again to scan for hardware changes outboard of the HBA.
• If the device is now visible, skip the remainder of this section.
• If the device is still not visible, then a system interruption is probably going to be
required to recover the device, unless Unisys support or other resources are able
to resolve the issue.
4. Use the MCP Console to halt the MCP. Be sure that OCManager and any other
diagnostic utilities are not running.
5. Use Device Manager to disable and then re-enable the HBA port.
Troubleshooting and Recovery
Although not expected, this step might result in a message indicating that a system
restart is necessary to complete the operation; ignore this message. Otherwise if the
device is still not visible in Device Manager, try one last time to scan for hardware
changes outboard of the HBA and see if the device becomes visible.
If the preceding steps do not make the device visible in the environment, then the problem
is probably external to the FS6200 Server and the storage and storage connections should
be re-examined for problems.
If no external problems (including bad cables) are found, restart the environment or restart
the FS6200 Server. If the problem persists, contact Unisys support.
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