Working onsite with a client this week, they asked why one of their new Hyper-V servers was rebooting. I checked the event logs on the server and could not see anything obvious at all. All the event logs showed was unscheduled reboots occurring around every two weeks at 11:53am in the morning.
Given that these servers are HP 300 series servers, they all have inbuilt iLo remote management. Even if you don’t purchase any optional licenses for the Advanced features of the iLo you can still login to it and see a lot about what is going on with the server, and even power cycle it remotely. Once I connected to the iLo I could see these in the servers hardware event logs…. it was indicating that power was being removed from the server and then restored. Interesting as the servers (multiple of them) are all on the back of an APC 3KVA UPS.
I then checked other servers also on the same UPS and found the same issue… needless to say we believe we have a faulty UPS and have now reworked the power for these servers to another UPS while we get this one replaced.
The availability of things like these iLos are one of the reasons I love the HP server hardware – it made my life a lot easier this time round 🙂
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