RAID1 dude - not cool.. Get some more HDDs in there and go for proper redundancy. Also install SMART and other hardware alerts. The bright spark who said "there is no cloud, only other people's computers". Well yes, they are other people's but Amazon, Apple, Microsoft to name a few - your data spread over tons of devices - pretty good chance of redundancy there.
why running your own hardware at all? Today there are big providers everywhere who offer you a professional price at affordable price. Make a backup of the database from time to time and a backup of the webpages to restore them if necessary. More important of course are the data.
Even if a simple RAID-System... no Backups at a different place?
