Microsoft

Find out who's logged on to the Windows NT network before performing maintenance

Timing is everything when it comes to network maintenance. Windows NT's Server Manager utility can help you determine the best time to perform this task.

Performing maintenance work isn't always easy, but it's a necessary part of an administrator's job. One of the most important issues is correct timing. For example, it's not a good idea to schedule operating system updates during the day when users are actively using resources.

Most network administrators consider it a best practice to perform any necessary maintenance tasks after hours whenever possible. However, the Internet has blurred the line between working and nonworking hours, and you can't be certain that no one is working on the network just because it's after 6 P.M.

To help you out, Windows NT 4 shipped with Server Manager (Srvmgr.exe), a utility that tells you how many users are using resources and allows you to notify them. You can find Srvmgr.exe in the Administrative Tools folder.

When you open the utility, you'll see a list of computers on the network. Double-clicking a computer opens a dialog box with additional options.

  • The Users button displays all users who are accessing resources on this computer.
  • The Shares button opens a new dialog box that lists all shares and the users accessing these shares.
  • The In Use button displays all opened resources (e.g., files) used by remote users on the computer.

Once you see how many users are accessing computer resources, you can notify them of any actions you need to take. For example, if you're restarting the machine, make sure you notify users so they have enough time to save their data. To do so, select the computer, and go to Computer | Send Message in Server Manager. Enter the message, and send it to all users who access resources on the computer.

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