Best to lodge a ticket with Sales, explain what you need, they will work with you to achieve your goals as best they can, nothing is impossible and I am speaking from experience on both sides of the fence. As a TCH user and also when I did some Support Desk work for them some Xmas's ago when they needed some help. This is a family of friends who believe in helping each family member have an enjoyable hosting time, not promise the earth and then find out that what they tell you won't happen. I too have had this happen, and it caused huge amounts of headaches for me and a person that helps me, and we wasted a lot of very valuable unpaid for time, like 4 days.
What Balakrishnan has said is correct, they do do a lot of backups which is always helpful to know. Remember you can also do your own backups to off-site premises like your business or home to a NAS you might have as well, I currently do that with two NAS and have about 1.5 Terrabytes of backups on one of them. I have around 8+ Terrabytes of disk space spread over three devices, as drives do fail, one running 4 x 2 Terrabyte drives in RAID which gives me around 5.6 Terrabytes Usable, and can have two disks fail and replace them, they will rebuild themselves back, which I think is a pretty safe way of doing things. One other device has 2 x 2 Terrabyte drives but they are single drives not in raid, use one for backup of home stuff and the other will be used for secondary backup from the main raid system. Then I have a portable drive that I can put in place as well.