We are configuring a new iscsi production environment with iSCSI. We've installed four Oracle Linux VM's and I would like to ask which is better option to attach Guest VMs to iSCSI SAN;
1. Direct connection from each VM to SAN
2. Connect LUNs/volumes to vSphere (making a new datastore) and add them as a new hard disk to VMs
We are having a HA with two ESXi 6 hosts (vSphere Enterprise), both of them attached with four NICs to iSCSI (two NICs per switch). Storage we are using is three Equallogic SANs.