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Hi All,
We have a very strange behavior with our EMC(VMAX) iSCSI volumes the are connected to our ESXi hosts(5.1 and 5.5). Some hosts have Emulex cards for iSCSI Adapters, others have iSCSI Software adapters. In both type of hosts we have the same problems.
This happen after we create a new Storage Group in the EMC and use the same iqn Groups(with the same hosts that have already some other Volumes from another Storage Group), then when we reboot a host, we cannot see most of the datastores anymore(some have the new ones, some have the old ones, that are from different Storage Groups). I know when we reboot will clean or close iSCSI connections and with this some Datastores will not show, but the strange is that if we go to the Devices all Volumes are there(in all hosts). But if we try to add, no Volumes show to add to the host.
I even try to change the on some volumes Round Robin to Fixed to see if fix the issue, no luck. All path shows as active and are green, so no issues here.
I even double check the Volumes configuration and connection(the ones that are visible and the ones are not visible) using "esxcli storage core device world list" and "esxcli storage core device list -d" , but dont see anything different between them.
Trying to see anything in VMware, but did not find anything related to issues like this.
Any help or seen some similar behavior will be a great help.
Thank You
NW