Oracle Sun Fire X4800, Product Notes

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Diagnosing SAS Data Path Failures on Servers Using MegaRAID Disk Controllers
For more details, refer to information about viewing system information and inventory
in the Oracle ILOM Administrators Guide for Configuration and Maintenance , which is
available at
http://www.oracle.com/goto/ilom/docs
.
2. Ensure that the server firmware version is at the minimum required version,
shown above, or a subsequent release, if available.
3. If the required firmware (or newer) is not installed:
a.
Download the firmware from My Oracle Support at:
https://support.oracle.
com
b. Install the downloaded firmware.
Refer to the information about performing firmware updates in the Oracle ILOM
Administrators Guide for Configuration and Maintenance , which is available at
http:
//www.oracle.com/goto/ilom/docs
. Ensure that you perform the preparatory steps
described in that document before updating the firmware.
Note -
Occasionally after installing the firmware, the Oracle ILOM web interface cannot
display the power state correctly on the power control page. To correct this problem, clear your
browser cache before logging in to the Oracle ILOM web interface.
Diagnosing SAS Data Path Failures on Servers Using
MegaRAID Disk Controllers
On Oracle x86 servers using MegaRAID disk controllers, Serial Attached SCSi (SAS) data path
errors can occur.
To triage and isolate a data path problem on the SAS disk controller, disk backplane (DBP),
SAS cable, SAS expander, or hard disk drive (HDD), gather and review the events in the disk
controller event log. Classify and analyze all failure events reported by the disk controller based
on the server SAS topology.
To classify a MegaRAID disk controller event, gather and parse the MegaRAID disk controller
event logs using the
MegaCLI
command:
For example, at the root prompt, type:
root# ./MegaCli64 adpeventlog getevents –f event.log aall
Success in AdpEventLog
Important Operating Notes 15