iSCSI Qualified Name (IQN)
iSCSI uses the iSCSI Qualified Name (IQN) scheme for addressing.
IQN's are made up of four distinct fields separated by a period
and can be created/used by any organization that owns a domain name
(known as the the naming authority).
The four fields are:
iqn.- this distinguishes the name from an
A date in the format YYYY-MM, for example
1995-10.- this must be a valid year/month combination, corresponding to when the naming authority first owned the domain (used in the next field).
The DNS domain of the naming authority in reverse, for example
A optional string prefixed by a
:that the naming authority deems appropriate. Effectively this string provides detail to the IQN and can include product types, serial numbers etc. It can also include a colon
:as a boundary separator. For example
Here are some examples of valid IQN addresses:
Extended Unique Identifier (EUI)
iSCSI also allows another form of addressing managed by the IEEE
Registration Authority. This type of addressing represents a globally
unique identifier (EUI) and is assigned by the registration authority.
The format of the EUI consists of the string
eui. followed by a EUI-64
identifier (16 ASCII-encoded hexadecimal digits).
Here are some examples of valid EUI addresses:
Typically EUI's are used by manufacturers who are registered with the IEEE Registration Authority and use the EUI-64 scheme for its worldwide unique names (the EUI-64 is also used in other network protocols, such as Fibre Channel, which defines a method of encoding the EUI-64 it into the World Wide Name used by FC as a unique identifier).