Avago Technologies 3ware 9650SE-12ML (Channel) User Manual
Page 324

Troubleshooting
312
3ware SAS/SATA RAID Software User Guide, Version 9.5.1
Cause
Applies only to the 9690SA controller.
The enclosure’s amperage is unknown. A power supply may have failed.
Action
If applicable, replace the failed power supply.
See your enclosure documentation or contact your enclosure manufacturer for
more details.