How to activate the LED light of the failed disk?

Hi All,

we have dell Equal logic box its out of warranty. I am remotely supporting this box. I need to guide datacenter folks to replace the failed hard disk.

Any one please tell me Q) how  to activate the LED light of the failed disk? same like "netapp".

I have noticed that BUI under members there is "Flash LED Lights option" Actually what is the use of this option? if I start the LED lights they can recognize the failed disk ?

Please help on this request..

Thanks,

RT