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Why the breaker is open, when the customer Expansion some load for VCM5020 system

Publication Date:  2019-03-24 Views:  124 Downloads:  0

Issue Description

One  customer face an emergency issue: the VCM5020 didn't working. It was  stopped one hours, until the  engineer  go  to checking the working. The engineer fond that all  of  PSU was shutdown,    And all of breaker  was  opened, they is support power  for VCM5020.

Alarm Information

There are not any Alarm form Data Center Monitoring System, But  the equipment's PSU was  not power.

Handling Process

Through analysis the load of VCM5020, The customer  was expansion some function  modules.

We calculate the whole power consumption of VCM server is 8088 watts, each PSU current is 9A,  less than XXX’s rPDU peak value 16A.

VCM5020 Blade configuration and power consumption 5448 watts for all blades, 8088 watts for whole 5020 server.

The actual current of the PSU is measured in the field, with a maximum current of 2.5A per module,

It is recommended to adjust the power connection of the VCM around one PSU to the rPDU A1 and rPDU on the left and right sides B1

Adjusted rPDU A1,r PDU A2, rPDU B1, rPDU B2 power consumption is as follows:



 



 






 
 
 
 
 
 
 
 
 
 
 
 







 



Root Cause

VCM5020 Blade configuration and power consumption 5448 watts for all blades, 8088 watts for whole 5020 server.

Solution

It is recommended to adjust the power connection of the VCM around one PSU to the PDU A1 and rPDU on the left and right sides B1

Suggestions

1. Choose the more than breaker (32A) rPDU for the data center. When the customer planning the data center.

2,Analysis all of the power of equipment, and adjust the power connection of the VCM around one PSU to the rPDU A1 and rPDU on the left and right sides B1.

3,When engineer  deliver any project need to analysis the all of equipment's max loads, and adjust the power connection to other rPDU.  

END