Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 319)

Error and Notification Messages
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8028 Enclosure temp unknown
Event Type
Warning.
Cause
Applies only to the 9690SA controller.
The enclosure is reporting that it is unable to determine the temperature of the
unit. This may be due to a failed or missing sensor.
Action
Check the operational status of the temperature sensor. If it has failed, replace
it.
See your enclosure documentation or contact your enclosure manufacturer for
more information.
8030 Enclosure power normal
Event Type
Information.
Cause
Applies only to the 9690SA controller.
The enclosure power supply is now back within the acceptable range.
Action
None required.
8031 Enclosure power fail
Event Type
Error.
Cause
Applies only to the 9690SA controller.
One of the enclosure power supplies is not working. Either a power supply
has failed or a cord is unplugged.