Does vSphere recognize a iSCSI datastore based on the Target IQN, IP, or both? EG Host A is configured to access the datastore via IP 10.100.100.100 (NAS HBA 1) and Host B via IP 10.100.100.101 (NAS HBA 2), both to the same iSCSI datastore/IQN.
You map to a LUN so both, you need the IP for layer 3 connectivity, but you need the IQN to make connecting to the session possible for layer 5 session for iSCSI. Layer 4 transport is TCP 3260.
Such is the way of all TCP/IP, you have to have an IP and Port to create sockets. And once ESXi establishes that connection to port 3260 and creates the iSCSI session, then you connect to the appropriate LUN that houses the DataStore.
My question has to do with how vSphere determines a datastore defined on a host is the same datastore defined on another host in a cluster, not basic networking.
Because of VMFS is a cluster file system and it will populate MetaData so new/additional Hosts can participate if they get phys. access to the block storage.
