Honestly, it's hard. There's the obvious, agonizing option of hand-testing files (not all of them, but test a sample of 30-ish of them, ideally not the same ones as a prior test). And... That's really it. That's your option.
It's hard for computers to know when a file is corrupted, except by running the file. And even then, sometimes it won't notice. It's like living in a house with rotted wood in the wall, until it collapses, you won't know unless you by-hand check it.
You could do things like listen to how the server runs, try to hear if any sounds seem off, but every drive sounds ever so different anyways, unless it's REALLY off you won't be able to tell. Best bet is just to sample random files and see if they're intact.
Physical damage is obviously noticeable, of course. Water damage, impact damage, those are bad. And if possible, a temperature check is useful, is it running hotter than it should be? Could be a sign of wear on the internal components, thermal paste erosion (hopefully just that since it's an easy fix), or power source issues.
Honestly, it's hard. There's the obvious, agonizing option of hand-testing files (not all of them, but test a sample of 30-ish of them, ideally not the same ones as a prior test). And... That's really it. That's your option.
It's hard for computers to know when a file is corrupted, except by running the file. And even then, sometimes it won't notice. It's like living in a house with rotted wood in the wall, until it collapses, you won't know unless you by-hand check it.
You could do things like listen to how the server runs, try to hear if any sounds seem off, but every drive sounds ever so different anyways, unless it's REALLY off you won't be able to tell. Best bet is just to sample random files and see if they're intact.
Physical damage is obviously noticeable, of course. Water damage, impact damage, those are bad. And if possible, a temperature check is useful, is it running hotter than it should be? Could be a sign of wear on the internal components, thermal paste erosion (hopefully just that since it's an easy fix), or power source issues.