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

John R Pierce

pierce at hogranch.com
Mon Aug 15 18:19:22 UTC 2011


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?

-- 
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast




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