Overlay Optimizer is a software component that
works with Microsoft Unified Write Filter (UWF). Overlay Optimizer
provides write protection and extends the uptime of devices.
Overlay optimizer works on the Windows 10 IoT Enterprise operating
system.
The UWF protects the disk by storing the
changes in the RAM overlay. When an application tries to write data
to the disk, the write filter redirects the write operations to the RAM
overlay. The overlay size is preconfigured and cannot increase
dynamically. When the overlay runs out of space over a period, the device restarts.
The Overlay Optimizer monitors the UWFs'
overlay space and the content. Overlay Optimizer identifies higher
overlay space consumption in write filter and moves the unused
content to the Overlay Optimizer's disk overlay. Clearing the UWF
overlay extends the device uptime.