How to check the status of disks on the server?

Question

Hetzner

Twice in my life I faced the problem of the death of one of the disks in the RAID array on the server. And both times the detection of problems was too late, when the second one also crashed.
As they say, a fool learns from his mistakes. Please explain how and how often you need to check the integrity of hard drives in a soft raid?
CentOS, Hetzner.

Answer 1

in mdadm you can set up an email notification about a failed disk, in zabbix you can set up a check for raids
in general, this is all done by the system administrator once or twice.

Answer 2

They wrote about the software, for hardware use native management and control utilities, or take the one you like from this list hwraid.le-vert.net/wiki/DebianPackages then at least a simple script on the crown pull once an hour, filter the status, if not OK helmet soap.