[CentOS] how to find RAID card world wide ID?

Tue Oct 8 23:31:05 UTC 2013
mcclnx mcc <mcclnx at yahoo.com.tw>

we have DELL server with PERC RAID card in it.  O.S> is CENTOS 5.5.

Can anyone tell me how to find SAS address (World wide ID) on RAID card?

Thanks.