Dell 720N, 740N, 760N manual 1-3#:

3-22 Dell PowerVault 720N, 740N, and 760N Installation and Troubleshooting Guide
System error: errsts%x %x—An error code representing a spe-
cific error condition. The system detects a
hardware error, such as a parity error, that
cannot be corrected. To clear the error
condition, the system restarts.
System too hot The temperature sensor indicates that the
system temperature is too high.
Uncor proc mchk: code x Processor machine check code.
Uncor sys mchk: code x System machine check code.
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