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Cisco MDS 9000 Series: Unusually low values for several PSUs, and no syslog warning triggered

Summary: Unusually low values for several PSUs, and no syslog warning triggered

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Symptoms



The output of the command 'show environment' displays unusually low values for several PSUs in the "Actual Output" column, and the sum of the "Actual Draw" column of various system components is much higher than the sum of "Actual Output" of all the PSUs. However, there is no Syslog waning triggered for such behaviour.
 
Example:

`show environment` Power Supply: Voltage: 50 Volts Power Actual Total Supply Model Output Capacity Status (Watts ) (Watts ) ------- ------------------- ----------- ----------- -------------- 1 DS-CAC97-3KW 84 W 3000 W Ok 2 DS-CAC97-3KW 70 W 3000 W Ok 3 DS-CAC97-3KW 62 W 3000 W Ok 4 DS-CAC97-3KW 102 W 3000 W Ok 5 DS-CAC97-3KW 79 W 3000 W Ok 6 ------------ 0 W 0 W Absent 7 DS-CAC97-3KW 4 W 3000 W Ok 8 ------------ 0 W 0 W Absent Actual Power Module Model Draw Allocated Status (Watts ) (Watts ) ------- ------------------- ----------- ----------- -------------- 1 DS-X9448-768K9 392 W 650 W Powered-Up 2 DS-X9448-768K9 404 W 650 W Powered-Up 3 DS-X9448-768K9 404 W 650 W Powered-Up 4 DS-X9448-768K9 404 W 650 W Powered-Up 5 DS-X97-SF1-K9 103 W 190 W Powered-Up 6 DS-X97-SF1-K9 124 W 190 W Powered-Up 7 DS-X9448-768K9 431 W 650 W Powered-Up 8 DS-X9448-768K9 404 W 650 W Powered-Up 9 DS-X9448-768K9 418 W 650 W Powered-Up 10 DS-X9448-768K9 395 W 650 W Powered-Up Xb1 DS-X9710-FAB1 125 W 150 W Powered-Up Xb2 xbar N/A 150 W Absent Xb3 DS-X9710-FAB1 130 W 150 W Powered-Up Xb4 xbar N/A 150 W Absent Xb5 DS-X9710-FAB1 127 W 150 W Powered-Up Xb6 xbar N/A 150 W Absent fan1 DS-C9710-FAN 30 W 600 W Powered-Up fan2 DS-C9710-FAN 20 W 600 W Powered-Up fan3 DS-C9710-FAN 30 W 600 W Powered-Up

Resolution

Replace the affected PSU

Affected Products

Connectrix MDS-9710

Products

Connectrix MDS-9710
Article Properties
Article Number: 000058596
Article Type: Solution
Last Modified: 20 Nov 2020
Version:  2
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