Harry Bloomfield, Esq. wrote:
Pancho laid this down on his screen :
You can test disk performance with:

https://crystalmark.info/en/software/crystaldiskmark/

Thanks....

Max Read 930.78 Lowest 106.57

Max Write 183.00 Lowest 64.81 MB/s

Does that suggest Optane is working?

Yes. A SATA interface can only do about 550MB/s so to get higher than that
suggests caching is in operation. The 'lowest' speeds are about right if
the traffic is going to HDD not cache.

Theo