vsphere-esxi-vcenter-server-55-storage-guide

vSphere StoragePorts in the iSCSI SANA single discoverable entity on the iSCSI SAN, such as an initiator or a target, represents an iSCSI node.Each node has one or more ports that connect it to the SAN.iSCSI ports are end-points of an iSCSI session. Each node can be identified in a number of ways.IP AddressiSCSI NameiSCSI AliasEach iSCSI node can have an IP address associated with it so that routingand switching equipment on your network can establish the connectionbetween the server and storage. This address is just like the IP address thatyou assign to your computer to get access to your company's network or theInternet.A worldwide unique name for identifying the node. iSCSI uses the iSCSIQualified Name (IQN) and Extended Unique Identifier (EUI).By default, ESXi generates unique iSCSI names for your iSCSI initiators, forexample, iqn.1998-01.com.vmware:iscsitestox-68158ef2. Usually, you donot have to change the default value, but if you do, make sure that the newiSCSI name you enter is worldwide unique.A more manageable name for an iSCSI device or port used instead of theiSCSI name. iSCSI aliases are not unique and are intended to be just afriendly name to associate with a port.iSCSI Naming ConventionsiSCSI uses a special unique name to identify an iSCSI node, either target or initiator. This name is similar tothe WorldWide Name (WWN) associated with Fibre Channel devices and is used as a way to universallyidentify the node.iSCSI names are formatted in two different ways. The most common is the IQN format.For more details on iSCSI naming requirements and string profiles, see RFC 3721 and RFC 3722 on the IETFWeb site.iSCSI Qualified Name (IQN) FormatThe IQN format takes the form iqn.yyyy-mm.naming-authority:unique name, where:• yyyy-mm is the year and month when the naming authority was established.• naming-authority is usually reverse syntax of the Internet domain name of the naming authority. Forexample, the iscsi.vmware.com naming authority could have the iSCSI qualified name form of iqn.1998-01.com.vmware.iscsi. The name indicates that the vmware.com domain name was registered inJanuary of 1998, and iscsi is a subdomain, maintained by vmware.com.• unique name is any name you want to use, for example, the name of your host. The naming authoritymust make sure that any names assigned following the colon are unique, such as:• iqn.1998-01.com.vmware.iscsi:name1• iqn.1998-01.com.vmware.iscsi:name2• iqn.1998-01.com.vmware.iscsi:name999Enterprise Unique Identifier (EUI) FormatThe EUI format takes the form eui.16 hex digits.For example, eui.0123456789ABCDEF.70 VMware, Inc.