One additional thing which is not very clear for a beginner like me but has to be mentioned is that TS-HTGL to be rebuild from scratch it has to have all 4 disks installed
I have spent few evenings playing around with it and struggling with getting it run. I was using only two disks in it. Finally I edited create_raid.sh script (and few other related scripts) commenting and removing everything what was related to disks 3 and 4. Got it running ok, however found issues after I removed RAID using GUI and tried to re-create it (apparently due to number of disks installed).
Only because I was courious I got two extra hard drives to test it. Removed all partitions and data from all disks, EM, tftp and *poof* it just worked like a charm. Updated to the latest FW version, created and deleted RAIDs and so on
Can someone more experienced confirm this? Is there any easier way to reinstall FW running just 1-3 disks in it?