This is what my datacenter says
I've connected monitor to your server and it looks like it was rebooting and is waiting for manual fschk again. Have you rebooted your server?
Then fdcservers would do the manual fschk. Server is online again. But the next day, same thing happen again.
What should I do
I suspected it's hardware.
How do I know which SSD need to be replaced?
If I got to check logs, which logs I should see.