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SPARC T5-4 systems may suffer a power glitch during an ac power cord cycle (disconnecting/connecting power cables) when parallel boot and host auto power on are been enabled (which are the default values) (Doc ID 1982289.1)

Last updated on FEBRUARY 26, 2021

Applies to:

SPARC T5-4 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
Applies only to SPARC T5-4 (does not apply for SPARC T5-2, SPARC T5-8)

Symptoms

SPARC T5-4 systems may suffer a power glitch during an ac power cord cycle (disconnecting/connecting power cables) when parallel boot (-> show /SP/policy PARALLEL_BOOT) and host auto power on (-> show /SP/policy HOST_AUTO_POWER_ON) are enabled (which are the default values).

 

Note: This issue has been seen only on the SPARC T5-4 systems (not seen on SPARC T5-2 and SPARC T5-8 systems) with the following system firmware versions: 9.3.0.d (20229460), 9.3.0.b (20034528), 9.2.1.b (19264423), but it might be also occur on higher/lower firmware versions. To determine the platform and firmware version, below commands can be used from the sp (ilom): 

- show /SYS product_name
 product_name = SPARC T5-4

- show /HOST sysfw_version
 sysfw_version = Sun System Firmware 9.3.0.d 2014/12/09 14:14
 sysfw_version = Sun System Firmware 9.3.0.b 2014/11/13 17:52
 sysfw_version = Sun System Firmware 9.2.1.b 2014/07/11 14:46

- show /System model
 model = SPARC T5-4

- show /System system_fw_version
 system_fw_version = Sun System Firmware 9.3.0.d 2014/12/09 14:14
 system_fw_version = Sun System Firmware 9.3.0.b 2014/11/13 17:52
 system_fw_version = Sun System Firmware 9.2.1.b 2014/07/11 14:46

and to check the sp policy settings, below commands can be used:

- show /SP/policy
 HOST_AUTO_POWER_ON = enabled
 HOST_COOLDOWN = disabled
 HOST_LAST_POWER_STATE = disabled
 HOST_POWER_ON_DELAY = disabled
 PARALLEL_BOOT = enabled
 VGA_REAR_PORT = disabled

 

After an ac power cord cycle (disconnecting/connecting power cables) when parallel boot (-> show /SP/policy PARALLEL_BOOT) and host auto power on (-> show /SP/policy HOST_AUTO_POWER_ON) are enabled (which are the default values), the following events are reported:

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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