DriveGLEAM is a handy piece of software that places an icon in the System Tray to help you monitor disk activity and/or RAM and CPU usage.
While the interface cannot be resized, it's still a good thing that most features are grouped in a single window, which makes everything a lot easier to configure and use.
For example, DriveGLEAM displays all drives, along with RAM, CPU and VRAM controllers to let you configure them for placing an icon in System Tray for easy monitoring.
The application provides read, write and idle indicators, which means any changes to the items you select can be easily noticed. Plus, it boasts a dedicated tool to use the keyboard scroll lock LED as a notifier whenever there's activity on one of the selected disks.
The System Tray icon shows multiple details such as the volume name, file system, free capacity, read and written bytes whenever you move the mouse cursor over it.
There are only a few customization options available, including separate tools to set up activity poll interval and load indicators interval, but also to enable multi CPU monitoring and a single icon mode for all selected items.
Although it's supposed to run all the time, DriveGLEAM has just a minimum footprint on hardware resources, remaining very light all the time.
All in all, DriveGLEAM works smooth on all Windows versions out there and it doesn't even ask for administrator privileges to run on Windows 7. To sum up, it's one of the easiest ways to keep an eye on disk activity.