Laptop hard drives are a lot more durable that desktop drives. If you search around these forums you will find mixed experiences of the durability of hard drives. Ive read some people that say they go through drives constantly and some that go 4x4ing all the time and never have an issue. For the most part if you have decent laptop HD and you give it some sort of anti-vibration mounting it should last for a while unless you like to hit pot holes often.
If your really concerned about it then I would recommend investing in a Solid State Drive. They are quite pricey but very effective.
If you don't want to spend that money just back up your setting and use you laptop as is and if it does die you can then decide what to do and you'll have it all saved