Just received an email from a peer in the industry (
When upgrading the UCS firmware of your environment, some B200M4 blades may reboot spontaneously.
Cisco Bug: CSCut61527 – B200M4 could reboot on shallow_chkpt when BMC returns invalid FRU data. This is the Cisco article.
Affected firmware: 2.2(3) and 2.2(3a)A according to the KB. My upgrade was from 2.2(3c) to 2.2(3f).
According to the KB this issue should be resolved in 2.2(3g)A.