Storage Agents Events 1151

[Michael S. Androsov]

I received next message in the Event Log of Windows Server R2 Enterprise 2003:
Source Storage Agents
Category: Enents
ID: 1151
External Array Controller Status Change. The external controller in I/O slot 2 of array """" has a new status of 4.
(Controller status values: 1=other, 2=ok, 3=failed, 4=offline, 5=redundantPathOffline)
[SNMP TRAP: 16020 in CPQFCA.MIB]

I have HP Proliant DL380 G4 & HP MSA1000 external storage.
My system working OK now.

What's the problem?

Michael