Keeping an Eye on Your Servers
ELM Enterprise Manager is more than just a baby-sitter.
ELM Enterprise Manager, from TNT Software, allows you to monitor all
your servers from a single console. Not only that, but it automates or
enhances many of the monitoring capabilities built into Windows NT and
Windows 2000, although you can monitor non-Windows servers too. It also
has archiving and reporting functions for the data collected from your
There are many reasons why I like this software-a lot. It's simple to
install and extremely easy to use; the documentation is well organized,
understandable and a nice manageable 49 pages. I spent a lot of time trying
to break it or get inconsistent performance and couldn't. Not even once.
Also, when I sent a support request via e-mail to TNT software, I got
a helpful response less than a half-hour later. This was for an unregistered
evaluation version of the software. Finally, everything about the product
gave me the impression that the developers who built it paid a lot of
attention to detail and let their QA folks go over it thoroughly.
ELM Enterprise Manager consists of three parts: the server, which is
where the data is collected and stored; the console, which is where you
view and manage the ELM server; and the agent, which monitors the servers
you want to keep tabs on and sends information to the ELM server. The
console and server can be on the same or different PCs.
The installation process is clean and simple. The default installation
installs both the server and console, prompts for a service account and
gives login as a service right to that account. Installation requires
MDAC 2.6 Service Pack 1 or greater; if you don't have it, you're prompted
to download it from Microsoft's Web site. After installation finishes,
the Database Connection Wizard launches and you're prompted to specify
what type of database you want to use for data collection. The only quirk
I found was that, if you're using SQL Server, the Database Wizard doesn't
create the database automatically. You have to manually create a blank
database, then resume the wizard and specify the database name. Note:
While I used SQL Server for my testing, ELM is also supported on Access,
MSDE and Oracle.
|The ELM Enterprise Manager console lets you monitor
and manage all your servers from one place. (Click image to view
After installation, a wizard walks you through selecting the servers
you want to monitor and what type of agent you wish to use. There are
three types. I tested the Service Agent, which consists of a small .exe
and associated .dll files that are physically installed on the monitored
server. You can install it from the ELM management console, and you don't
have to reboot the server afterward.
I haven't had good luck with software agents in the past and was semi-dreading
testing that part of the software ("Which PCs do I want to fry today?"
Yes, I use Ghost but I still don't like rebuilding machines). I was convinced
that if the program was going to get flaky, this is where it would happen.
Fortunately, from my workstation, I installed the service agent on multiple
test machines without a problem. I then installed it on a production server.
There was no noticeable impact on performance, and no strange issues cropped
up after the agent was installed. I was also able to easily test, disable
or delete the agent-all from the ELM management console on my workstation.
If you don't want to install anything on the servers you want to monitor,
you can use the Remote Agent. This works by polling from the ELM server
at regular intervals and adds some network overhead. Finally, you can
also use an IP Agent, which, unlike the Remote Agent, isn't specifically
Windows-based. The IP Agent is used to check the status and availability
of IP services such as ftp, http and so on. All agents worked fine.
The management console is intuitive and simple, to the point where I
initially thought, "Well, this isn't anything you can't do just by adding
some snap-ins to an MMC console. Why pay extra for it?" As I used it,
though, it became clear that wasn't true. While I like how ELM consolidates
Event Viewer and Performance data, the other features add a lot of value
to the product. Some of the things you can do include:
Set up customized e-mail (or pager, Net Send, custom beeps and so on)
notifications for several servers and several different events in one
place. You can do this in Windows, too, but it's a much easier process
in ELM. One nice touch is that you can test the alert by pressing the
Test button rather than having to trigger the alert condition.
- Track when a server process starts and stops.
- Set up notifications to occur if a Web page has been modified.
- Monitor response time for Web, ftp and SMTP servers and send a notification
if they're too slow.
- Schedule SQL queries to run and send notification if the results aren't
what they should be.
And the best thing about it is that it's not any more complicated than
it needs to be. All in all, ELM Enterprise Manager is a well-designed
and solidly built and supported product. If you're looking for a monitoring
solution, it's well worth your time to consider it.
About the Author
Suzanne Pacheco is the IT Manager for Micro Information Products in Austin, Texas. In her spare time, she and her husband John play golf and try to keep their three labradors entertained.