Recently I have come to realise that a SATA SSD passing a long or short smartctl test on a SATA SSD doesn't mean that the drives performance hasn't degraded.

It would seem that the correct way to test the health of a SATA SSD under Linux is to use one of these TBW (Total Bytes Written) scripts / commands which are based upon smartctl:

https://askubuntu.com/questions/865792/how-can-i-monitor-the-tbw-on-my-samsung-ssd

The current SMART template:

https://www.zabbix.com/integrations/smart

Has a percentage used item of NVMe disks but it seems to lack an equivalent for SATA disks which would be TBW.

I would like to see the Zabbix SMART template upgraded to support TBW for at least Samsung SSDs. I think it should alert by default when the TBW drops below 90%. I have a couple of disks with a TBW of 87% and it has brought the speed of the array (pool) down drastically.