I’ve seen this happen a lot when Linux systems are clones from each other, or when using Kickstart, etc for install. There is a naviagent config file that you should edit on each host to clearly set the specific host identifiers. If the file is identical on both hosts, then Navisphere sees them as the same host and auto-registers them together. This can also change the registration later on if the hosts are manually registered at first. The good news is that Navisphere maintains the host LUN masking even if this problem occurs.  Richard J Anderson
I have several CX arrays, and they all appear to be confused about the host definitions for a pair of physical RHEL hosts implemented on similar hardware. Both hosts are RHEL 5.6, running on seperate HP DL580 G5 boxes with seperate HBA's. For some reason, the Clariion seems to think that a storage group called "hp1" has both "hp1" and "hp5" hosts, and it will not allow me to assign  the "hp5" host to the "hp5" storage group. Ive tried using both Navisphere GUI and Unisphere. Ive also tried command line as follows: naviseccli -h cx3-spa storagegroup -connecthost -host hp5 -gname hp5 -o Error: storagegroup command failed Host specified is not known by storage system Any help would be appreciated.
CX array appears confused about 2 hosts