Best strategy to check harddisk issues on Red Had Linux

Question

What is the best strategy(and utility) to check hard disk related issues on red hat Linux ?

Answer 1

Depends on the issue. If it's some sort of failure-related thing, check dmesg for error messages and smartctl for info on what might have gone wrong. If it's performance problems, check smartctl for remapped blocks and sar -d 1 0 to see how hard the disk is actually being thrashed.

Beyond that, what issues are you actually having? More detailed questions elicit more detailed answers.