A preventive filter maintenance caused the problem.
A technician cut both power suppliers by mistake.
The traffic of the hosts is switched on the twin n5(n5-23-PCC).
A human error is the origin the problem.
A technician in the datacenter cut mistakenly the pcc-22-n5 (traffic switched on the pcc-23-n5) and did not wait for the CCP-22-n5 to be back online again and committed the same manipulation mistake on the pcc-23-n5. This kind of error (looking like a sabotage) is not included in the specifications of the PCC.
2 errors = 2 fingers of the technician were cut with an ax.
Powered by Flyspray