V445 Solaris prtdiag Shows "FAULT" LED Of Empty Disk Slots

Asset ID:	1-72-2225940.1
Update Date:	2018-05-17
Keywords:

Solution Type Problem Resolution Sure

Solution 2225940.1 : V445 Solaris prtdiag Shows "FAULT" LED Of Empty Disk Slots

Applies to:

Sun Fire V445 Server - Version All Versions and later
Information in this document applies to any platform.

Symptoms

The Solaris utility "prtdiag -v" shows the name of the LED of disk drive slots that don't contain disk drives as "FAULT".
This has been observed with earlier versions of ALOM Firmware up to most recent version: v1.6.10

Example:

# prtdiag -v
System Configuration: Sun Microsystems sun4u Sun Fire V445
System clock frequency: 199 MHZ
Memory size: 9GB

[...]
Led State:
--------------------------------------------------------------
Location               Led       State Color
--------------------------------------------------------------
[...]
MB/HDDCNTRL/HDDBP/HDD0 SERVICE   off amber
MB/HDDCNTRL/HDDBP/HDD0 OK2RM off blue
MB/HDDCNTRL/HDDBP/HDD1 SERVICE   off amber
MB/HDDCNTRL/HDDBP/HDD1 OK2RM     off blue
MB/HDDCNTRL/HDDBP      FAULT     off amber
MB/HDDCNTRL/HDDBP    FAULT     off amber
MB/HDDCNTRL/HDDBP      FAULT off amber
MB/HDDCNTRL/HDDBP      FAULT     off    amber
MB/HDDCNTRL/HDDBP      FAULT     off    amber
MB/HDDCNTRL/HDDBP      FAULT     off amber

At the same time, the FRU operational status, displayed by "prtdiag -v" shows only those disk drives that actually exist in the server:

Fru Operational Status:
---------------------------------
Location Status
---------------------------------
MB/SC okay
MB/HDDCNTRL/HDDBP/HDD0 present
MB/HDDCNTRL/HDDBP/HDD1 present
PS0 okay
PS1 okay
PS2 okay
PS3 okay

Whereas the output of the command "sc> showenvironment" on the System Controller (ALOM), correctly reflects the fact that several disk drives are not present:

System Disks:
--------------------------------------------
Disk Status      Service OK2RM
--------------------------------------------
HDD0 OK          OFF      OFF
HDD1 OK      OFF      OFF
HDD2 NOT PRESENT OFF    OFF
HDD3 NOT PRESENT OFF      OFF
HDD4 NOT PRESENT OFF    OFF
HDD5 NOT PRESENT OFF    OFF
HDD6 NOT PRESENT OFF      OFF
HDD7 NOT PRESENT OFF      OFF

Cause

There is no problem with the empty disk slots.

Solution

This is not an indication of an actual fault.

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