Hi,
I have a few C6100's which show an unbalanced current load on the PSU's. The sensors read out by ipmitool shows the following:
FCB FAN1 | 4300 RPM | ok
FCB FAN2 | 4300 RPM | ok
FCB FAN3 | 4300 RPM | ok
FCB FAN4 | 4300 RPM | ok
PEF Action | 0x00 | ok
WatchDog2 | 0x00 | ok
AC Pwr On | 0x00 | ok
ACPI Pwr State | 0x00 | ok
FCB Ambient1 | 16 degrees C | ok
FCB Ambient2 | 0 degrees C | ok
CPU1Status | 0x00 | ok
CPU2Status | 0x00 | ok
PS 12V | 12.21 Volts | ok
PS 5V | 5.02 Volts | ok
MLB TEMP 2 | 46 degrees C | ok
MLB TEMP 3 | 38 degrees C | ok
Processor 1 Temp | 25 degrees C | ok
MLB TEMP 1 | 42 degrees C | ok
Processor 2 Temp | 27 degrees C | ok
STBY 3.3V | 3.35 Volts | ok
PS Current | 7 Amps | ok
SEL Fullness | 0x00 | ok
PCI BUS | 0x00 | ok
Memory | 0x00 | ok
VCORE 1 | 1.03 Volts | ok
VCORE 2 | 0.89 Volts | ok
NM Capability | Not Readable | ns
Security | 0x00 | ok
PSU 1 AC Status | 0x00 | ok
PSU 2 AC Status | 0x00 | ok
PSU 1 Present | 0 unspecified | nc
PSU 2 Present | 0 unspecified | nc
PSU 2 POUT | 3 Amps | ok
PSU 1 POUT | 27 Amps | ok
As you can see the last two entries show that the power output for PSU1 is 27 Amps, and PSU2 is 3 Amps. On most of my machines, these numbers are very close to being equal. Is there an internal setting which switches these Power Control Boards from balanced to backup mode? Meaning that one is being used solely as a warm spare, instead of an even load balancing. When we remove PSU1, PSU2 takes over just fine and provides all required power. The problem is that we expect the load to be balanced, and if the system is not, it creates alarms for us since effectively one supply is full on, and the other is off. Has anyone else seen this problem and found a solution, or must I have the Power control boards replaced? Also, how does the FCB interact with the power control boards, and could this also need replacing? Thanks for any help