That is correct.
BUT a typical data recovery process can take anywhere between 2 weeks to 4 weeks in order for the data to be re-constructed. The industry standard charge is $1 per 1GB of data. That would be S$1000 to recover a 1TB (1000GB) HDD!
A business just cannot afford that downtime where critical information cannot be read and processed.
Your clients certainly won't like that either.