Apple’s release of macOS 10.15 (Catalina) has expanded a privacy protection feature that was introduced in macOS 10.14 (Mojave) which requires users to allow applications to access protected locations. When you run LaCie RAID Manager (LRM) you may be prompted for access to files on a removable volume as shown in the example below:
Clicking ‘OK’ allows LRM to create, modify, and delete RAID arrays as well as initialize and format the volume once the array is created. If ‘Don’t Allow’ is clicked, LRM will not have the ability to initialize and format the volume. This process will need to be done using Disk Utility.
If the prompt is not acknowledged, it may disappear after a period of time, defaulting to denying access to the location. It is possible to enable/disable access on a per app basis within the Security & Privacy preference pane.
Click the Apple Icon > System Preferences > Security & Privacy > Privacy tab.
The preference pane will need to be unlocked by clicking the lock icon in the lower left-hand corner, then entering your credentials. From there you will be able to place a checkmark next to the app to enable access or disable access by removing the checkmark. The application will need to be restarted for the changes to take effect.