In a scsi cluster the cluster traffic is passed across another bus, like FDDI, ethernet (and possibly memory channel). That is the main difference between SCSI and DSSI. Likewise there is mo decnet over scsi as there is decnet over dssi (and the older CI) ------Origineel bericht------ Van: Peter Coghlan Afzender: owner-hecnet at Update.UU.SE Aan: hecnet at Update.UU.SE Beantwoorden: hecnet at Update.UU.SE Onderwerp: Re: [HECnet] Satellite configuration/NCP crash Verzonden: 15 september 2011 23:27 Unless youLre running an NI cluster. If PEDRIVER is loaded shutting the decnet circuit used by it must crash the node. I would have thought that shutting off decnet will not affect SCS traffic. If it happend that it did, AND there were two or more nodes in the cluster trying to communicate and failing, I would expect one or more nodes that lost quorum to hang for RECNXINTERVAL seconds (by default, 20). After that, one or modes might bugcheck with a CLUEXIT exception. A SSRVEXCEPT exception much more likely indicates something is wrong with the software. Regards, Peter Coghlan.