If your RTO is zero (I cannot go down) then you may opt to have a completely redundant infrastructure with replicated data offsite and so on. If your RTO is 48 hours or 72 hours then maybe tape backup is OK for that specific application.
In an exothermic reaction, the total energy of the products is less than the total energy of the reactants. Therefore, the change in enthalpy is negative, and heat is released to the surroundings.
Answer:   An endothermic reaction is a chemical reaction in which energy (heat, light, etc.) is absorbed instead of released as in a exothermic reaction.xothermic reactions give out energy overall. Here are some exothermic reactions: - Combustion of fuels such as hydrogen & methane-Neutralisation of an acid by an alkali-Rea â¦ ction between sulphur & iron Endothermic reactions take in energy overall.