Novell:Overview
the network once, using one password.
administration by providing a single
work and allows for construction of a
They are then given seamless access to
point of administration for an entire
system where failure, maintenance of a
all the network resources they are auth
enterprise. Each network resource has
file server, or temporary loss of a com
orised to use. Access to resources after
an exclusive global identity, requiring
munications link need not affect oper
initial login is handled automatically
resources to be created only once for
ations.
through background authentication
the entire network. For example, al
users are never asked for another pass
though a user may need access to
Extensibility
word and are unaware that authentica
multiple servers, only one user ID is
tion is taking place.
required for the entire network. The
The directory schema regulates the
With NDS, user login is the same no
result is lower network administration
structure of an NDS directory tree. The
matter where an individual is physi
costs.
schema is a rules system that defines
cally located on the network. NDS
NDS also allows for freedom of
how the NDS directory tree is struc
allows users to access the network
management. In many organisations, it
tured. The schema determines what
from any geographic location and have
is desirable to centralise management
objects are defined, what attributes can
a consistent view of the network re
and administration services that reach
be associated with objects, what
gardless of which workstation they use
across departmental boundaries. In
properties objects inherit, and what po
to log in from.
other cases, administration may be
sitions objects occupy in the directory
The hierarchical database structure
delegated to the department or work
tree.
of the NDS design reduces network
group level. NDS supports both cen
The NDS schema is extensible,
traffic and makes user searches and
tralised and distributed administration
which allows administrators to modify
operations fast and efficient. Users can
operations, giving organisations the
the base schema supplied with Net
find a required network resource by
power to determine which method of
Ware and customise NDS to fit their
searching or browsing the tree with
administration works best for them.
needs. For example, a user object can
Novell or third party utilities.
be extended to include a social security
Distribution
number or an emergency contact name
Powerful Administration
and telephone number.
NDS is a distributed database that is
Independent software vendors
A recent Gartner Group study
fully replicated to provide fault toler
(ISVs) and administrators can integrate
found that 73% of the total cost of own
ant login and administration from any
new services into the network by ex
ing a network is incurred in adminis
where on the network. By breaking the
tending the NDS schema and adding
tration costs. NDS provides
NDS database into managable pieces
new objects. For example, an ISV can
sophisticated but easily managed ad
(partitioning) and distributing it across
add fax server functionality to the net
ministration that helps reduce the cost
the network, fault tolerance is pro
work by adding a fax server object to
of managing a network. NDS allows
vided. In addition, NDS data can be
the NDS tree.
administrators to manage the entire
placed close to the users who need it,
network from a single location, with a
thereby ensuring optimal performance
Flexibility
single graphical user interface (GUI)
when accessing the network.
administration utility.
NDS partitions are copied or repli
Because organisations are always in
Without a directory service, admin
cated across the entire network as
a constant state of change, NDS was
istrators are often required to perform
many times as necessary. If a primary
designed to be very flexible, allowing a
the same operations multiple times,
partition is lost, the network recon
company's directory tree to change as
either for each user or for each server.
figures itself to use a backup copy. This
the organisation changes. Individual
NDS eliminates the need for redundant
further increases reliability of the net
objects, groups of objects, or entire
branches of the directory tree can be
moved to different locations in the tree
with a simple drag and drop. Moving
objects with name services such as the
"NDS helps users and administrators
NetWare 3 bindery or NT Server's Do
main Name Service requires adminis
become more efficient, by making the
trators to completely delete and
recreate the object in the new location.
network easier to access and manage.
NDS also allows the merging of two
This ease of use and administration
separate directory trees into one. This
allows separate NetWare 4 networks to
also significantly lowers the cost
be easily combined into one enterprise
wide network. In addition, merging
of owning a network."
trees gives organisations the ability to
implement separate NDS trees by de
File: N0492.2
Issue 81 (March 1997) page 10
PC Network Advisor
< Next page >
New! The best sites for quality inkjet printer cartridges and the best sites for cheap inkjet cartridges