Hi Uehara,  Blue LED patterns indicate nodes is healthy. For more information, please refer to the following video:  Decode the Node: A Tour of the EMC Isilon S210 | ID.TV - YouTube
Does anybody know front LED patterns of S210? (circled in the below picture) I checked up lots of materials but could not find the info.... I can say it turns on Green and turns to Amber if an issue happens. I'd like to know the other LED patterns. [IMAGE]  Thank you,
Front LED patterns_S210