Procedure to replace a faulty SSD in Sangoma appliance.
Identifying the SSD in question
Top SSD is labled as /dev/sda
Bottom SSD is labled as /dev/sdb
GUI Raid Status
GUI -> Reports -> System -> Storage Status
Turn off the Sangoma appliance
Take out the faulty SSD
Replace the faulty SSD with a new blank SSD
Turn on the Sangoma appliance
Navigate to GUI Raid Status
GUI -> Reports -> System -> Storage Status
Click on Recover Raid
You will see the message "Recovery in Progress"
The Raid1 will sync all information from working disk to the new blank one