How to check when FTD 2.0.1 was initially installed?

1. Connect to FTD 2.0.x server via ssh
2. Navigate to /var/log/YaST2

cd /var/log/YaST2/

3. Check the date of file named _dev_sda (created during OS install partitioning phase):

/var/log/YaST2 # ls -l _dev_sda
-rw------- 1 root root 512 Feb 16  2011 _dev_sda

This date is the date when the appliance was installed.