UltraSPARC[R] III system boards falsely unsupported when power supply types are mixed in a Sun Fire[TM] 3800 chassis.

Asset ID:	1-72-1012650.1
Update Date:	2017-10-18
Keywords:

Solution Type Problem Resolution Sure

Solution 1012650.1 : UltraSPARC[R] III system boards falsely unsupported when power supply types are mixed in a Sun Fire[TM] 3800 chassis.

Applies to:

Sun Fire 3800 Server - Version Not Applicable and later
All Platforms

Symptoms

v4u-3800c-sc0:SC> poweron sbX
Jun 21 01:03:47 3800c-sc0 Platform.SC:
WARNING: /N0/SBX is not supported in this chassis because the power supply types are mixed.

Cause

Firmware version 5.20.0 and 5.20.1 are preventing system boards from powering on when A145 & A145E power supplies are mixed in a Sun Fire[TM] 3800 chassis

Solution

The new code introduced in firmware levels 5.20.0 and 5.20.1 was intended to prevent 1800MHz USIV+ boards from powering on if there was an illegal mix of power supplies in the Sun Fire system chassis. However, the code was too general and did not take into account that the SF3800, which does not support USIV+ boards, could legally mix the A145 and A145E power supplies in the same chassis. Currently, firmware versions 5.20.0 and 5.20.1 will prevent USIII boards (such as 750MHz) from powering on and will issue the following error...

v4u-3800c-sc0:SC> poweron sb2
Jun 21 01:03:47 3800c-sc0 Platform.SC:
WARNING: /N0/SB2 is not supported in this chassis
because the power supply types are mixed.

v4u-3800c-sc0:SC> showboards
[...]
PS0      On  A145E Power Supply    -    OK  <<---- Different PSU
PS1      On  A145  Power Supply    -    OK
PS2      On  A145  Power Supply    -    OK
[...]

The firmware will be amended to exclude the SF3800 from the mixed power supply rule and a fix included in version 5.20.2 which will be available on 25th August 2006.

Relief/Workaround

If an upgrade to 5.20.2 is not possible, ensure that all power supply types are the same by replacing as few power supplies as possible (only one power supply need ever be replaced).

See Bug ID: 6443248 for more details.

power, supply, type, mixed, A145, A145E, 3800, supported
Previously Published As
86760

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