Hello, Recently during an electrical maintenance, we faced a problem with some servers that had redundant PSUs. After the power was shut down on the circuit that serves the first PSU, the second PSU failed to keep some servers up and they rebooted (came back normal and stayed stable after that). Tonight the same procedure was done on the other power circuit and the second PSU failed too (on a smaller number of machines). These are all enterprise-level servers which vendors will promptly replace failed PSUs.. but these PSUs were working fine as far as we can tell. Has anyone had this problem too?
I'm looking for some advice regarding proactive PSU replacements. Is it a common practice? We do replace disks as proactively as we can by monitoring several performance metrics but for PSUs I'm at a loss here. Thank you, -- Giovanni Tirloni gtirl...@sysdroid.com
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