Seems a bit irresponsible to suggest that is all you need to do however... do you not need backups? I'm looking at the specs and you list the RAID level of your storage under 'Data Protection'. Any IT pro will tell you that RAID is for availability, not protection. What happens when this falls off the desk it's on (as you suggest storing it) and all the drives fail?
I understand that it does not require any 'IT pros', but whom do you call during the warranty period? Are you not professionals? Do you sell maintenance contracts outside the warranty term? If I need to replace a failed drive in the array, will you be dispatching a technician to my location, or will I need to pay one of the baneful aforementioned 'IT pros'?
Why are you using RAID 5 in favour of RAID 6 or 10 when you already spec the server with 4 drives? A significant number of people and companies, among them some of the world's largest storage vendors, will warn you against using RAID 5 for any reason due to it's low performance and reliability. Since you only need a loss of 2/4 drives in the array to cause irreparable RAID failure, I assume each drive comes from a different batch?
You've made a claim that the server is 'secure' but you advise people to place it on their desks, and as far as I can tell from the limited documentation provided, you do not offer a means of full disk encryption. If I grab this off the desk while dressed as a DHL employee carrying a clipboard and do a runner, what stops me from accessing all the data?