https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872972#M21795 Harmless, Beacon On and Beacon off, means the UID lights came on. If you were resently in ACU you will see the ID lights come on for the whole system, Beacon ON. We turn them off when you exit ACU, Beacon OFF.<BR /><BR /><BR /><BR /> Mon, 02 Oct 2006 07:52:54 GMT John Kufrovich 2006-10-02T07:52:54Z https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872970#M21793 On a MSA1500cs (dual controllers) with Ltest Active/Active Firmware we have an indication on the controllers (light on the triangle) and the LCD pannel sais " 150 BEACON ON" AND "151 BEACON OFF", but the system seems to work perfect, ANY Suggestion ??? Mon, 02 Oct 2006 05:41:39 GMT https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872970#M21793 Yannis Nikolaides 2006-10-02T05:41:39Z https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872971#M21794 It seems that you have lost the FC connection to the SAN from either controller. <BR />Check if both controllers have a good connection to the switches.<BR /><BR />Cheers<BR />Peter Mon, 02 Oct 2006 07:42:50 GMT https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872971#M21794 Peter Mattei 2006-10-02T07:42:50Z https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872972#M21795 Harmless, Beacon On and Beacon off, means the UID lights came on. If you were resently in ACU you will see the ID lights come on for the whole system, Beacon ON. We turn them off when you exit ACU, Beacon OFF.<BR /><BR /><BR /><BR /> Mon, 02 Oct 2006 07:52:54 GMT https://community.hpe.com/t5/disk-enclosures/msa-1500s-error/m-p/3872972#M21795 John Kufrovich 2006-10-02T07:52:54Z