NDS (Novell Directory Services).
Novell’s scheme for creating corporate-wide disk directories running on a
variety of hardware. Node are classified in the following ways:
T=Tree specifically [Root]
In the [Root] of each Tree there can exist only two
container object types, O and C (it’s the start of the hierarchy). The OU or C types can exist within
O types and OU types can
contain additional OU types for an even deeper structure.
The C may contain O or
L types and an L type may
contain additional OU or L
types and so on. Each of these containers, except for the T type, may contain CN types which
represent users, groups, printers, servers, DNS (Domain Name Service)
records, databases, software applications, security keys, profile objects and a
variety of many other object types. Even your login name for
FTP (File Transfer Protocol) has this structure.