[CentOS] SAS storage arrays, C6, and SES lights

So I'm curious how SAS JBOD arrays and linux MDraid as implemented in CentOS6, and SES (SCSI/SAS Enclosure Services) backplane controllers 'get along' and how much configuration is needed to get the warning lights to work properly.

scenario: whitebox server with a SAS backplane or two, daisy chained on a SAS HBA (like an LSI Logic 2008), and disks organized as several raid5/6 using linux mdraid. Does this system have to be configured to ensure that the activity and failure lights match the drive bays, or does the SAS/SES spec all sort that out 'plug and play' ?

does mdraid properly set those warning lights automatically on a failed raid element?