HDD diagnostic & safety tool - suggestions required

Hi,

I need some suggestion w.r.t to the internal HDDs.

I have 2 HDD (1 old & 1 new both seagate) setup in my computer - in 4th and 6th bay of the cabinet

1. Is it safe to have HDDs that close or there is a chance of them getting heated and damage each other.

2. Is there any tool for ??

-keeping track of the health (like temp, etc) of the HDD
-to keep track of bad sectors if any that can come - and avoid keeping important data in those areas
- to periodically back info like partition,filesystem, MFT, MBR etc. so that in case a partition gets corrupted (not data) - the partition can be restored.


In other words I am looking for a tool for complete solution(can be shareware as well) - which offers me complete diagnostic & safety for HDD so that I never loose and important piece of data.


Thanks & Regards
-Arun