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With a SES2 capable backplane and SAS card, is it possible to light the drive failure light on a specific bay from Linux? If so, how?

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This can be accomplished with Enclosure LED Utilities with the following command:

ledctl failure=/dev/diskdevice

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This is a controller feature -- you need to use tools and software specific to the controller to be able to do that.

Without the make and model it's hard to tell anything more.

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SES-2 specifies a standard interface to the enclosure management. Thus if the controller complies with the specification (as stated in the question), there is no need to use controller specific software. – snap Dec 6 '12 at 23:01

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