NT v. UNIX
By Rob Bilson
There is a battle going on behind corporate firewalls everywhere. It isn ot about which browser to
standardize on, or who can and cannot have a home page. This fight is for your Intranet's operating
system, and the stakes are high. The two main contenders, UNIX and Windows NT, are both vying
for dominance in the multibillion dollar Intranet market. With both camps heavily touting their OS as
the best solution, how do you decide?
Several factors will come into play when deciding which platform you should use to build your
companies Intranet. You will have to consider everything from your company's existing systems to
technical support issues and projected future needs. While by no means all-inclusive, lets take a
look at what I consider to be the seven major areas that should guide you in making your decision:
Existing infrastructure, in-house talent, ease of administration, price, scalability, security,
and support.
Existing infrastructure
The first thing to consider is your company's existing infrastructure. If all of your machines are
SPARC workstations, you probably are not going to want or need to install an NT based solution.
Conversely, you probably would not want to install a UNIX box in an exclusively NT environment.
"Yes," you may be saying, "but my present network is a mix of UNIX and NT machines, now what?".
Now, you have to take into consideration what functions are being performed by which operating
systems as well as the overall demands you plan to place on the Web server(s). This brings us to
the next point for consideration, in-house talent.
In-house talent
Before you make the decision on an operating system for your Intranet, you need to consider the
people who are going to administer and support it. This goes hand-in-hand with your existing
infrastructure. Unless you are planning to hire new employees to fill the positions needed to
maintain an Intranet, such as designers, system administrators, webmasters, programmers and
graphic artists, you are going to have to evaluate the skills that your current IS personnel posses.
UNIX is a great platform to launch an Intranet from... if you can support it. UNIX system
administrators are in high demand, and the supply is limited. UNIX system administration is not a
skill that you can pick up overnight either. There are quite a few flavors of UNIX floating around each
with its own peculiar quirks. Someone who is familiar with SCO UNIX may not necessarily be as
comfortable working with BSDI's version. In addition, UNIX uses an archaic command line
language and several shells that can further complicate the process. NT on the other hand is based
on that familiar look and feel that Microsoft (and Apple) has made famous.
System administration
System administration is a big part of maintaining an Intranet. Administrators are responsible for
such things as adding new users, installing applications, maintaining security, and seeing to it that
the Intranet is kept up and running. This in itself is often enough to justify a full time position. In this
area, NT wins hands down. NT combines an intuitive GUI with powerful tools in an easy to use point
and click environment. Installing new software on NT is a breeze and usually involves running a
single setup program that guides the administrator through the setup process. UNIX on the other
hand, can be a nightmare to administer (especially for those who are new to UNIX). Although some
versions of UNIX have a GUI, most administration is done from the command line, making it difficult
to visualize the process. Setting up software applications on UNIX can also be a real chore. Most
software must be compiled on the machine that it is to run on, which can make for a big headache. I
have had the pleasure of setting up software on UNIX machines before, and I can tell you from
experience, it is not anywhere near as easy as it is on NT. I was attempting to install Perl on a
machine running SCO UNIX and their version of a Web server. After downloading the necessary
binaries, I went to compile the source code and proceed with the install. After typing the appropriate
commands, I was dismayed to learn that the necessary compiler was not included with the system.
After locating the compiler on the Internet, I downloaded it, and attempted to unzip it only to learn
that there were no unzip utilities included with the system either. After locating an unzip utility, I was
finally able to unzip the compiler. After trying to install the compiler numerous times to no avail, I
finally gave up. You see, I was familiar with UNIX, I had been using it for years and was quite
comfortable with it from a user's perspective, but when it came to administration, simple tasks such
as installing software became a big hassle.
Cost
Another factor in NT's favor is cost. Because NT is relatively inexpensive, it stands to gain a larger
market share than do more expensive UNIX operating systems. By the same token, NT is designed
to run on inexpensive PC platforms while the majority of UNIX OS's are designed to run on larger
and more expensive workstations and mainframes. Cost may not be an issue for larger firms like
Sun and IBM, but for your average small to mid-sized company, the differences are important. This
leads to
another consideration, and that is, as more small firms try to establish Intranets, the need for cost
effective solutions will increase. This seams to be where NT is positioning itself, and why I believe
that NT will obtain for itself a larger share of the Intranet server market than will UNIX.
Scalability
When Windows NT first hit the Internet/Intranet server scene, there was a lot of concern that it was
severely limited in its scalability and power. These concerns, for the most part, were unfounded.
You should be able to scale an NT based Intranet just as well as a UNIX based network and, at a
fraction of the cost. Processing power has also been a point of contention. It has been argued that
NT lacks the necessary processing power to handle large scale usage on Intranets. This is no
longer true as Intel based NT machines can now accommodate over 32 processors, keeping in
stride with their UNIX counterparts. Take a look at some of the businesses using NT as the platform
for their Intranet/Intranet servers. Companies such as General Motors, Lockheed Martin Corp.,
Gateway 2000, and NASDAQ are not going to make an investment in an operating system that
does not scale well.
One area where UNIX still maintains a small advantage over NT is in database integration. UNIX
servers have been maintaining extremely large relational databases for decades. It is not
uncommon for UNIX servers to house databases in excess of 4 terabytes. In contrast, SQL Server
for NT has a limitation of about 4 terabytes. This difference is negligible, however, when you
consider that the response time for a query on a 4 terabyte database would be slow regardless of
what platform the database is housed on. It must also be noted that database setup and
administration are by far easier on an NT based machine than on comparable UNIX systems.
Security
Perhaps the biggest concern for companies wrestling with the task of choosing the operating
system for their Intranet is security. Taking a gamble with confidential and/or proprietary data is not
an option. Companies want a solution that they can rely on. The debate over which OS is more
secure than the other is really a moot point. Depending on > how the operating systems are
configured, the security of both UNIX and NT can potentially be as tight as Fort Knox, or as full of
holes as Swiss cheese. Intranet security problems are more often a result of poorly designed or
managed security policies than a flaw in the operating system. Both UNIX and NT employ
authentication schemes, allow permissions to be set at the file, group, and world levels, and both
have a number of third party firewalls and proxy servers available for use with their various servers.
In addition, a number of data encryption schemes such as SSL are available for use with both
operating systems.
Support
The final point for consideration is vendor support for the operating system. An operating system
can claim to be the greatest OS ever created, but if you can not get the applications, tools, and
support for it that you need, then it will not be successful in meeting the needs of your Intranet. In this
area, NT has more to offer than does UNIX. NT offers more "off the shelf" applications than UNIX.
Although programs can be custom written in-house to meet the needs of either platform, the relative
cost and development time often make this option unfeasible.
When all is said and done . . .
When all is said and done, there is no clear winner in the Intranet operating system battle. Both
UNIX and NT are robust, secure systems with a lot of potential. NT retains a definite cost advantage
that might prove to be the determining factor for a large number of small to mid-sized businesses.
UNIX , on the other hand, has long been the workhorse in industry, and breaking its hold on the
market could prove challenging for NT, especially where large databases are an issue. There is no
all encompassing answer to the Intranet operating system question. The key is for decision makers
to approach the task of evaluating and choosing an OS with an open mind. UNIX is by no means
dead, nor is NT the solution for every operation. Companies need to be willing to use the operating
system that fits their particular needs best, whether it be NT, UNIX, or both.
About the author:
Rob Bilson is WebMaster at Amkor Technology.
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