Dell 7.4 manual Possible because there is no redundancy

Severity	Critical / Failure / Error
Cause and	Cause: A redundant virtual disk has lost redundancy. This may occur when the
Action	virtual disk suffers the failure of multiple physical disks. In this case, both the source
	physical disk and the target disk with redundant data have failed. A rebuild is not
	possible because there is no redundancy.
	Action: Replace the failed disks and restore from backup.
Related Alert	Clear Alert Number: 1204
Information	Related Alert Number: None
	Local Response Agent (LRA) Number: 2081
SNMP Trap	1204
Numbers
Event ID — 2311
Description	The firmware on the EMMs is not the same version. EMM0 %1 EMM1 %2.
Severity	Warning / Non-critical
Cause and	Cause: The firmware on the EMM modules is not the same version. It is required
Action	that both modules have the same version of the firmware. This alert may be caused
	if you attempt to insert an EMM module that has a different firmware version than
	an existing module. The %1 and %2 indicate a substitution variable. The text for
	these substitution variables is displayed with the alert in the alert log and can vary
	depending on the situation.
	Action: Upgrade to the same version of the firmware on both EMM modules.
Related Alert	Clear Alert Number: None
Information	Related Alert Number: None
	Local Response Agent (LRA) Number: 2090
SNMP Trap	853
Numbers
Event ID — 2312
Description	A power supply in the enclosure has an AC failure.
Severity	Warning / Non-critical
Cause and	Cause: The power supply has an AC failure.
Action	Action: Replace the power supply.
Related Alert	Clear Alert Number: 1003
Information	Related Alert Number: 2122, 2324
	Local Response Agent (LRA) Number: 2090
SNMP Trap	1003
Numbers

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